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Leading by examples – retrofitting all types of social housing – part two

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By Ian Babelon

In the first part of two blog posts, published on 22 May, Ian Babelon provided examples of good practice in retrofitting social housing. The second part of this blog post looks at estate-wide and area-wide social housing retrofits.

Introduction

Upscaling social housing retrofits requires learning from individual property retrofits and wider retrofitting programmes. With numbers comes greater complexity. As capacity grows, opportunities for partnerships provide new opportunities to embed retrofit programmes in wider sectoral and place-based strategies. This post considers the role of estate-wide and area-wide social housing retrofits, including how these can benefit from tenant engagement for healthy, inclusive placemaking.

Estate-wide retrofits

Low-carbon retrofitting measures on Lancaster West Estate at the Royal Borough of Kensington and Chelsea have included Energiesprong whole house retrofits at 38 homes, energy-efficiency measures at 367 homes across seven blocks, and testing mechanical ventilation heat recovery systems. The latest measure is the fully carbon-neutral retrofit at Treadgold House. Other measures have included public realm and safety improvements. Along with the extensive resident engagement, the estate has witnessed a deep one-of-a-kind transformation.

However, estate-wide retrofits can be difficult to plan and deliver to a high energy-efficiency standard due to the large up-front costs involved. A mix of whole-house retrofits, fabric-first approaches, redevelopment of poorly designed buildings, and essential scheduled upgrades might be preferable, depending on the context and the heavy cost of building safety compliance.

The acclaimed Passivhaus redevelopment of Agar Grove in Camden, based on the masterplan by Hawkins\Brown, features a mix of solutions that make the estate-wide regeneration more affordable for both the council and residents. These include new council homes, refurbished flats, affordable rental housing, and homes for sale, enabling a tall order of 496 new homes to be delivered in six phases. Besides providing much-needed quality homes to many, the project also acts an exemplar for social and affordable housing in the UK and beyond.

Area-wide programmes

From being an early adopter of the Energiesprong approach to the Deep Retrofit Energy Model (DREeM), enabling  energy-efficient retrofits to dozens of social homes, Nottingham City Homes have been among the first in the UK to develop neighbourhood-wide retrofits. Nottingham City Council even tested the innovative use of Low Temperature District Heating along with whole house retrofits for 94 homes in Sneinton, which proved more complex than initially expected.

In Scotland, the Renfrewshire retrofit programme aims for EnerPHit or AECB Retrofit Standard for up to 3,500 homes across eight neighbourhoods. The initiative is part of a £100m housing-led regeneration programme across the local authority. Renfrewshire Council was selected as Social Landlord of the Year 2022 by the Retrofit Academy for its clear strategy to deliver large-scale housing decarbonisation, adopt the PAS2035 framework wherever possible, and for its proactive engagement of residents throughout the programme.

Other noteworthy programmes include whole house retrofits for 150 council-owned flats on the Holt Dale Estate in Leeds, reaching EPC rating A, benefitting residents who were living in fuel poverty. The 3 Cities Retrofit programme is worth following up as it has the potential to retrofit up to 165,000 social homes across the Birmingham, Coventry and Wolverhampton City Councils.

In France, 14 housing associations in Brittany have partnered to leverage the Energiesprong approach for an initial stock of 2,000 social homes, with a potential to extend the experience to 16,000 social homes. In the north of France, the housing association Maison et Cités selected hemp concrete as the most effective material for a progressive roll-out of fabric-first retrofits to 20,000 homes in the former mining region. Both area-wide retrofit approaches were part-funded by the French public investment agency Banque des Territoires.

Upscaling tenant engagement

Residents should be onboard from day one of their property’s retrofit, but they can also actively contribute to wider retrofit programmes. Insight from the Social Housing Tenants’ Climate Jury report (2021) and the Resident Voices in the Net Zero Carbon Journey report both point to the need to educate and actively involve residents from the planning phase to supporting sustainable lifestyles.

One year on, these needs were felt even more acutely in the build-up to COP26. Critically, residents have expressed that perceived contradictions in council-led environmental strategies such as recycling can have knock-on effects on how they perceive the value and effectiveness of retrofits. This implies that efforts toward improving energy-efficiency and reducing waste should be consistent.

Resident-led and national initiatives have included community gardening and the Incredible Edible network. These can provide additional involvement opportunities as well as quality food and care for the neighbourhood. The demand for greener urban spaces, biodiversity and access to wildlife also came strongly in a related report by Orbit and the Chartered Institute of Housing. Initiatives that upscale tenant engagement include recruiting tenants as board members (at Connect Housing) or embedding tenant involvement in the housing provider’s sustainability strategy (at Notting Hill Genesis).

Providers can also encourage residents to contribute to the Together with Tenants Charter led by the National Housing Federation. The organisation Tpas and partners have shared tenant engagement guidance for ALMOs and housing associations that will be useful in seeking to upscale social housing retrofits. In addition, there has been a recent ministerial push encouraging tenants to voice their concerns more readily, and therefore to exercise scrutiny over what may be dismal housing conditions.

Final thoughts

Collaboration and cross-sectoral partnerships underpinned by active tenant engagement seem essential to deliver large retrofit programmes while hedging against otherwise deterring risks. Exemplars, in turn, help build a greater ‘can do’ attitude and know-how for the wider housing and property sectors on the road to net zero, including area-wide retrofits.

Ian Babelon is a UX Researcher in Idox.

Further reading: more on decarbonising housing and sustainable living from The Knowledge Exchange blog

New life for old homes: the potential of retrofitting social housing | The Knowledge Exchange Blog

Heating Clydebank via the Clyde: renewable heat in the COP26 host city | The Knowledge Exchange Blog

Growing opportunities: the multiple benefits of community gardens | The Knowledge Exchange Blog

Leading by examples – retrofitting all types of social housing – part one

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By Ian Babelon

In the first of two blog posts, Idox’s Ian Babelon takes us on a tour of some of the best social housing retrofits in Britain, and beyond.

Blog posts on the Knowledge Exchange blog have repeatedly shown the need to retrofit social homes at scale to provide decent, comfortable homes while building capacity for low-carbon homes. The recent Powering Up Britain agenda highlights the long-term economic, environmental and social benefits of retrofitting homes, with the latest government funding opportunities including the second round of the Social Housing Decarbonisation Fund (SHDF2) and ECO+. Thankfully, decades of learning in the UK and internationally have led to exemplar retrofits for all types of homes. After considering best practice guidance, this post provides a selection of examples across the UK and beyond.

Designing it right

The National Housing Federation has gathered excellent industry guidance about decarbonising social homes, and how to retrofit traditional and historic homes.

For example, the Sustainable Traditional Buildings Alliance’s Guidance Wheel helps to visualise and manage the interactions between the different dimensions of retrofits required to implement the landmark PAS2035 retrofit framework.

The Sustainable Renovation Guide by the Scottish Ecological Design Guide (SEDA) also provides excellent technical guidance for retrofitting various types of homes. Airtightness is often essential to achieving good energy performance as it prevents thermal gaps, as detailed in this technical guide.

Industry-leading, on-demand webinars hosted by the Northern Housing Consortium also provide guidance and inspiration for all aspects of low-carbon social housing retrofits, from financing to neighbourhood-wide retrofits. Experience shows that having an airtightness champion in the construction team is also key to successful retrofits.

To make best use of technical and design guidance, having Unique Property Reference Numbers (UPRNs) provide a ‘golden thread’ for housing associations. Being able to accurately identify and differentiate between all properties enables compilation of complete datasets about housing stocks.

The Better Social Housing Review (2022) encourages housing associations to work together to conduct and publish an audit of the UK social housing stock. A clearer picture of all social housing can benefit both individual organisations and the wider industry in tracking progress toward decarbonisation and healthy, affordable homes for all. Recent assessments by the Regulator of Social Housing for council homes in London have further revealed the importance of up-to-date, complete datasets to monitor and guarantee building safety measures. Related benefits can include consistent monitoring of energy performance, environmental health, carbon emissions, and customer experience.

Historic and older homes

Social housing in the UK is often associated with housing construction in the period between 1947 and the 1980s. However, according to existing housing unit statistics in England for 2021, there is a total of 400,000 social homes built in the interwar period, and 273,000 social homes built before 1919. Older homes can be located in conservation areas, which limits options for retrofitting.

In 2019, Southside Housing Association used the EnerPHit retrofitting approach (involving the highest levels of energy efficiency) to pre-1919 tenements on Niddrie Road in Glasgow, with a design by John Gilbert Architects, in collaboration with Strathclyde University. As is often required for older housing, the eight one-bed flats benefitted from internal wall insulation to preserve the sandstone street façades. Natural building products were favoured as much as possible to guarantee indoor air quality and permeability while reducing embodied carbon and energy. Heating was supplied with new Air Source Heat Pumps or energy efficient combi gas boilers, along with mechanical ventilation heat recovery units (MVHRs). The project serves as a demonstration exemplar for “deep” tenement retrofits, and received funding from Glasgow City Council, the commissioning housing association, the Scottish Government and the Scottish Funding Council.

High rises

In Hamilton, Ontario, the Ken Soble Tower owned by CityHousing Hamilton was nearing the end of its life, having been built in 1967. The 2021 EnerPHit refurbishment featured external-wall and roof insulation, along with Air Source Heat Pumps. Completed in 2021, it is the first EnerPHit retrofit of an apartment tower in North America, providing 146 affordable housing units to older residents.

Back in Glasgow, the Cedars Court high-rise, comprising 314 flats, owned by Queens Cross Housing Association, benefitted from the first of its kind fabric-first EnerPHit refurbishment in Scotland between 2016 and 2019.

Further examples of high-rise retrofits include 528 flats across three tower blocks at Edward Woods Estate (2011-2014) in Shepherds Bush, Hammersmith and Fulham, and retrofits of 291 flats across two tower blocks at Ethelred Estate (2009-2010) in Kennington, Lambeth.

Co-operative social housing

In London, the North Camden Housing Co-operative commissioned a deep retrofit of Carlton Chapel House to EnerPHit standards. The social housing block of 15 flats was built in the 1980s, and was later susceptible to energy losses, forcing residents into fuel poverty. Renovation took place in 2019, and required decanting tenants to temporary accommodation. Collaboration between the construction contractors and the architects was key to achieving airtightness. Residents reported improved air quality, thermal comfort, and less noise after moving back.

Rural retrofits

The guidance about older and traditional homes is often relevant for social homes in rural locations. Swaffham Prior Heat Network is the first of its kind in the UK, delivering a mix of ground source and air source communal heat to 300 homes, including residents at Sanctuary social homes. The project is the result of collaboration between the Swaffham Prior Community Land Trust, Cambridgeshire County Council and the Cambridgeshire and Peterborough Combined Authority.

Learning from examples

In seeking to bring new life to dysfunctional buildings, it pays to learn from other projects, including unforeseen challenges. Flagship retrofits such as the low rise flats at Erneley Close in Manchester (2015) and 11-storey housing blocks at Wilmcote House in Portsmouth (2014-2018) revealed structural issues while retrofits were under way. Such technical and financial complexities illustrate inherent risks to retrofitting homes that initial building surveys, however comprehensive, may fail to detect. Decanting residents or allowing them to stay in occupancy during retrofit works can both be a challenging experience. In both instances, however, residents reported significant improvements to living conditions after final completion.

Final Thoughts

The scale of the retrofit challenge is enormous. This does not mean starting from scratch, however. The wide range of projects cited in this article demonstrate that social housing retrofits can be delivered at scale for nearly all types of homes, apart from structurally unredeemable buildings. It pays, therefore, to learn, and lead, by example.

Ian Babelon is a UX Researcher in Idox. The second of his blog posts on social housing retrofits will appear in this blog on Wednesday 24 May.

Photograph: Samuel Ryde on Unsplash

Further reading: more on decarbonising housing in The Knowledge Exchange blog

Close to home: getting to net zero means decarbonising the UK’s housing stock | The Knowledge Exchange Blog

New life for old homes: the potential of retrofitting social housing

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by Ian Babelon

How can social housing retrofits help tackle the cost-of-living and climate crises that are currently exercising the minds of landlords, householders, tenants and governments? In this, blog post, Ian Babelon looks at the potential of retrofits for making homes more energy efficient and for futureproofing the built environment.

The benefits and costs of retrofitting

Around 38% of all homes in the UK were built before 1946. As a result, the UK’s housing stock is not only the oldest, but among the most poorly insulated in Europe, leading to higher energy bills and a lower quality of life. At the same time, UK homes account for over 66m tonnes of direct carbon emissions, undermining government decarbonisation efforts.

On many different levels, making Britain’s housing more energy efficient makes sense. Estimates by the UK’s Department for Energy Security and Net Zero (DESNZ) suggest households could save £220-400 in energy bills per year. In addition, retrofitting homes can address fuel poverty, provide decent homes, reduce public health costs, and help deliver decarbonisation targets.

But energy efficiency requires investment. Insight shared by the Greener Futures Partnership shows that it could cost between £13,000 and £25,000 to bring a social home to EPC (energy performance certificate) band C. This does not take into account training and skills requirements to retrofit homes, nor the significant variations in property condition, fabric type, fluctuating costs of construction materials, retrofit design choices, scheduling of renovation works, and availability of construction labour with the right skills. Retrofitting social homes at scale therefore requires working on multiple fronts at the same time.

The cost of not retrofitting

The 2022 Cost of Living Crisis in Scotland report by the Scottish Government shows that as many as 35% of households in Scotland may be fuel poor. In England, figures for 2022 by DENSZ indicate that fuel poverty affects 13.4% of households.

The consequences of fuel poverty are wide-ranging. The annual cost of treating health conditions associated with cold, damp homes in England amounts to £1.3 billion. Poor housing also affects mental health, can impair children’s learning opportunities, and puts older people at greater risk of strokes and other severe health conditions.

A 2021 National Housing Federation report showed that the UK’s social rented sector has made great progress in tackling fuel poverty (64.3% of housing association homes already have an EPC rating of C or above). But the study also underlined how much more needs to be done. An additional £36bn of investment is required, said the report, to bring the remaining 39% of housing association homes up to a C rating, as well as installing heat pumps and other clean heat technologies in all 2.7 million homes.

Financing challenges and solutions

Social landlords also face significant costs for remediation and building safety improvements that hamper their efforts to retrofit homes and meet national energy efficiency targets. As DESNZ rolls out the second wave of the Social Housing Decarbonisation Fund, the NHF has called for long-term funding certainty so retrofits can pick up the pace.

Fortunately, more financing opportunities are becoming available for social landlords looking to make their properties more energy efficient, as reported in a report by the Green Finance Institute. These include local climate bonds, leaseholder finance and insurance-backed ‘comfort plans’, such as the Energiesprong approach, which can pay for insulation measures with energy and maintenance savings.

Fabric first…

It pays to insulate homes before investing in complementary measures such as renewable energy generation or smart technologies. This ‘fabric-first’ approach is an attractive alternative to the large up-front investment costs for deep, ‘whole-house’ retrofits that may be prohibitive for social housing landlords.

Incremental retrofit approaches can combine initial fabric improvement with scheduled upgrades, such as replacing gas with energy-efficient electric heating and hot water, installing air-source heat pumps (ASHP) or introducing smart home devices.

Strategic planning is essential to avoid piecemeal interventions that might prove more costly and less effective over time. The Social Housing Retrofits for the Future report commissioned by the Greener Futures Partnership highlights the need for cross-sectoral collaboration to tackle technical, financial, legal and customer engagement requirements simultaneously by providing extensive evidence from across Europe and the UK.

LETI, a volunteer network of over 1,000 built environment professionals, has published a Climate Emergency Retrofit Guide for use by social housing landlords, designers and contractors. The guide provides an engaging infographic overview as well as guidance for a range of home archetypes.

… Or building from scratch

Are all poorly performing homes worth retrofitting? So-called ‘hard-to-treat’ and ‘hard-to-decarbonise’ homes (about 2% of all social homes) can be very costly to upgrade. LETI provides a decision aid to determine whether one should retrofit or build anew, to be used in conjunction with other guidance.

A key aspect of this decision is to differentiate between embodied carbon (carbon emitted in making construction materials and during actual construction) and operational carbon (emissions produced during occupancy). All things considered, it is usually more worthwhile to renovate and reuse homes than to knock them down and redevelop them.

Beyond retrofitting

As performance increases to meet sector-wide energy-efficiency targets, designing for and monitoring air tightness will become increasingly important to help achieve decarbonisation.

High-performance standards such as Passivhaus ENERPHit are premised on sound air tightness and ventilation to guarantee thermal comfort while reducing energy costs. The Passivhaus Trust provides resources and case studies to help councils, ALMOs and housing associations deliver energy-efficient retrofits and new builds, along with a recent evidence-based research report that makes the case for whole-house, low-carbon retrofits.

The next frontier for retrofitting social housing at scale lies in neighbourhood-wide retrofits that could appeal even more to green finance but would require commensurate public-private partnerships and coordination.

Final thoughts

Overall, retrofitting social housing is a win-win for everyone involved. It is good for the environment, the economy, and the people who live in social housing. The up-front costs can be substantial, but the long-term benefits should make these investments cost-effective.

The social housing sector has clearly been taking action to deliver more energy efficient homes, and it’s working with residents, contractors, local authorities and other stakeholders to ensure that the Social Housing Decarbonisation Fund succeeds.

Challenges remain, notably concerns about skills shortages. But the prize of warmer homes, affordable energy, a better quality of life and a cleaner planet is well worth the effort of overcoming these obstacles.

Ian Babelon, UX Researcher, Idox

A longer version of this article is available for subscribers to The Knowledge Exchange Information Service. To retrieve it from our online database, use the reference number: B67199.

Photo by Erik Mclean on Unsplash

Further reading: more on energy efficient housing from The Knowledge Exchange blog

Guest post: insulate Britain or miss net zero

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Jack Marley, The Conversation

The UK is failing to enact the policies that would put it on track to reach net zero emissions by 2050, according to a progress report by the Climate Change Committee. The head of this expert body, which advises the government on its climate strategy, described the UK’s record on home insulation in particular as “a complete tale of woe”.

Gas heating in draughty homes is one of the country’s biggest sources of carbon emissions – and a leading cause of poor health and poverty as energy prices remain sky-high. So what would it take to turn this around?

“The transition to net zero emissions is often framed as a race to make new stuff – such as electric vehicles and wind turbines – as fast as possible,” says Ran Boydell, a visiting lecturer in sustainable development at Heriot-Watt University.

“That’s actually the easy part. The hard part will be modifying what already exists – and that includes people’s homes.”

Cavity wall insulation, triple-glazed windows, solar panels, low-carbon heating systems such as heat pumps which run on electricity: all of these things and potentially more are needed to neutralise the contributions to climate change made by 26 million homes (the number of existing homes Boydell anticipates will still be around in 2050). That would eliminate 68 million tonnes of CO₂, which is about 15% of the national total.

“The idea is to ensure that no home emits greenhouse gases by burning fossil fuels for energy and that, eventually, each home could produce as much energy as it uses,” Boydell says.

According to analysis by the Climate Change Committee, the average cost of retrofitting a single home to net zero standard is £26,000. Energy savings would make up for this after 20 years, but most households would struggle to make such a big upfront investment.

“Considering energy efficiency measures purely in terms of financial payback will never stack up,” Boydell says. “They must be considered in terms of carbon payback. Carbon payback is how quickly the reduced carbon emissions from daily life in a net zero home take to make up for the carbon emissions that went into making and building all the different parts.”

A home operating at net zero standard would compensate for the carbon that went into building it after just six years, Boydell estimates. But it’s the responsibility of the government – and not individual homeowners – to juggle these considerations, he says.

“Infrastructure, like roads and railways, is the only stuff people build which counts its payback periods in decades. The government needs to think of a mass retrofit programme for our houses in those terms: as critical national infrastructure.”

Fund, regulate and overhaul

Matthew Hannon and Donal Brown study green policy at the universities of Strathclyde and Sussex. They say that:

“At an absolute minimum, the government should be aiming to install insulation in 1.3 million homes a year – a rate it managed pre-2013.”

To reach that level, Hannon and Brown have four suggestions. First, increase annual funding for retrofitting homes from £1 billion to £7 billion – enough to retrofit 7 million homes by 2025, they claim. Next, shift the burden of raising this money into general taxation and away from energy bill levies which strain the poorest households and inflate the cost of heating homes with zero-carbon electricity.

“Insulating hundreds of homes at a time, neighbourhood by neighbourhood and coordinated by local authorities, could help to retrofit housing deeper and faster than tackling homes one by one,” they say. For this, collaboration with local groups and businesses who know the community well will be key. Hannon and Brown argue the government will also need a separate, well-funded programme to install heat pumps and other low-carbon heating systems, while phasing out support for gas boilers.

An engineer adjusts the external fan unit of a heat pump on the side of a house.
Heat pumps, if powered by renewable electricity, can decarbonise heating. I AM NIKOM/Shutterstock

Once a national campaign to renovate Britain’s homes to net zero standard is underway, there are certain to be teething problems. The Labour Party offered a comprehensive programme of home insulation at the 2019 election. At the time, Jo Richardson, a professor of housing and social inclusion at De Montfort University, and David Coley, a professor of low-carbon design at the University of Bath, described the obstacles that will need to be overcome.

“The UK construction sector is highly fragmented – and different subcontractors are often responsible for the walls, roof and electricity in a single house. This makes quality control difficult. There’s also a skills shortage, especially when it comes to the detailed knowledge required to build a zero-energy house. And if energy-consuming extras such as underfloor heating or electrically driven windows are added, the energy savings from design may be lost,” they say.

The Climate Change Committee noted that new homes are rarely net zero standard, with 1.5 million built in recent years that will need to be retrofitted. The preferred solution for Richardson and Coley is to mandate each new home to Passivhaus standard, which certifies that it produces as much energy as it uses.

“Passivhaus only works if the right design decisions are made from day one,” they caution. “If an architect starts by drawing a large window for example, then the energy loss from it might well be so great that any amount of insulation elsewhere can’t offset it. Architects don’t often welcome this intrusion of physics into the world of art.”

Increased funding, new regulations and an overhaul of architectural norms will be necessary to roll out zero-energy homes and retrofit existing ones. “That’s a tall order,” say Richardson and Coley. “But decarbonising each component of society will take nothing short of a revolution.”

Jack Marley, Environment + Energy Editor, The Conversation

This article is republished from The Conversation under a Creative Commons licence. Read the original article.

Further reading: more on energy efficiency from The Knowledge Exchange blog

Co-housing: the promises and the pitfalls

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Over the past two years, the coronavirus pandemic and the cost of living crisis have eclipsed the UK’s chronic housing shortage. But the housing challenges of 2019 are still with us in 2022, and in many ways they have worsened. According to the housing charity Shelter, over 17 million people are living in overcrowded, dangerous, unstable or unaffordable housing.

There’s no single solution to Britain’s housing emergency. But one idea that’s gaining increasing attention is co-housing.

A London School of Economics report has given a good definition of co-housing:

“A co-housing group is formed by a community of people typically with similar needs and interests. Co-housing is owned by the group and usually contains private rooms or houses with communal areas such as living rooms and kitchens, where people will come together to share meals and spend time together. The residents are responsible for the management and maintenance of the site, and they are run in a non-hierarchical way, giving all residents an equal say in how they are organised.”

The modern co-housing movement began in Denmark in the 1970s, and has since spread to other European countries, including Sweden, Germany and the Netherlands. There is now a growing number of co-housing projects in the UK, and although these are small in scale, they are pointing the way to alternative models of housing, and also to addressing other social issues, such as isolation and loneliness.

The promises of co-housing

The proponents of co-housing suggest that it has multiple benefits for residents:

  • affordability: by pooling resources such as cooking, childcare, and household expenses, co-housing residents can cut costs;
  • security: co-housing provides safe spaces for residents to live and socialise;
  • sustainability: sharing resources increases efficiency and reduces waste;
  • community: co-housing residents make decisions together, and co-housing can also reduce the chances of isolation.

The multiple faces of co-housing

There is no single template for co-housing. Some projects have a mixture of generations, singles, couples and families, while others focus on the needs of particular communities. In the United States, intergenerational co-housing projects have brought together retired people, families and foster children. Another scheme, in Berlin, has been designed for older gay men, but also welcomes older lesbian women, trans and inter persons, as well as younger LGBTQ+ people.

In 2016, the UK’s first co-housing project for older women opened in Barnet, north London. The New Ground scheme has been successful in developing a mutually supportive community of women over the age of 50. In addition, New Ground has worked to encourage policy makers, planners and housing associations to recognise the social and economic benefits of co-housing, and to respond to the demand that exists for senior co-housing.

Because co-housing is often seen as being reserved for communities who are affluent and predominantly white, Housing 21, a leading provider of retirement properties for older people, has recently launched a co-housing initiative with a focus on older Black and Asian people of modest financial means.

Tackling isolation: how co-housing can address loneliness

The communal nature of co-housing makes it a natural fit for people who are isolated and lonely. This was one of the themes of a recent webinar hosted by Housing LIN. One of the participants was Kath Scanlon, a researcher from the London School of Economics, who highlighted her work exploring the links between loneliness and participation in community-led housing.

Kath’s research has underlined the importance of social connection with neighbours and sharing spaces with others as ways of preventing loneliness:

“Broadly, we found that the most tight-knit places, where members knew and trusted each other most, performed best as supportive communities… Emotional loneliness was countered by fostering meaningful relationships and ‘belonging’ through physical proximity, sharing similar values, a reciprocal commitment and care, looking out for and supporting each other.”

A resident’s perspective

One of the most engaging and powerful contributions to the Housing LIN webinar came from Alison Cahn, who has been a resident at Lancaster Cohousing scheme since 2012.

Alison was one of the first residents of the scheme, which is an intergenerational co-housing community of households in the village of Halton, three miles from Lancaster in the North West of England.

The Lancaster scheme was designed by the people who live there. It consists of private homes, community facilities and shared outdoor space. Shared facilities include a laundry, food store and a car share scheme.

As Alison explained, the scheme is an eco-housing community, designed to make sustainable living easy. The homes are built to Passivhaus standards, which means they use about 15% of the energy to heat compared to conventional housing. Electricity comes from the scheme’s own microgrid. And if Alison needs anything, from a drill to a tent, she can borrow it from her neighbours. Overall, the scheme is estimated to save around 540 tonnes of CO2 every year (a single tonne of CO2 is equivalent to a 500 m3 hot air balloon).

Alison also highlighted the social aspects of co-housing. The scheme has been designed to enable residents to meet and interact. As well as sharing facilities, the residents get involved in communal activities, such as art, camping and wild swimming. They also work together and make decisions on the future development of the scheme.

Alison watched her mother grow old alone, and was determined that this shouldn’t happen to her. She feels supported by her neighbours, something that was especially important when her husband fell ill. Alison also spoke very movingly about another resident called Roger, who found support from the co-housing community in the final weeks of his life. As she explained: “Roger said he came to this co-housing scheme to die, but he didn’t. He actually came here to live.”

The pitfalls of co-housing

While Alison was keen to stress the attractions of co-housing, she also described the challenges. “Different people need different levels of social connections. Not everyone is keen to spend much time with their neighbours, and some prefer their privacy.” While decisions are taken together, reaching a consensus can take time, with general meetings sometimes getting heated. “Some bitter conflicts have fractured relationships, and some people have left.”

And although co-housing can reduce isolation, some residents have the impression that it will solve all their problems – “We’re neighbours, not carers or psychotherapists.”

Final thoughts

As things stand, co-housing schemes in the UK are too small to tackle the enormous challenges of the country’s housing shortage. But existing schemes demonstrate the great potential of this model of housing. And with more support from housing associations and local authorities, co-housing in the UK could really take off.

It was thanks to an imaginative collaboration between Hanover Housing Association and the Older Women’s Co-Housing group that the New Ground co-housing scheme became a reality. The housing association financed purchase of the land and construction of the properties, and the homes were presold or pre-let by the co-housing group before construction started.

Co-housing isn’t for everyone. It requires commitment from residents to participate in the management of a scheme, and to sacrifice some of their privacy for the benefit of their neighbours. This model of housing presents particular challenges, some of which might be hard to overcome. But the rewards of co-housing can be substantial.

Or, as Alison Cahn puts it: “When it works, it’s awesome.”

Photo by Dylan Gillis on Unsplash

Further reading: more on housing from The Knowledge Exchange Blog

Decarbonising our buildings: heat pumps or hydrogen for the future of heating?

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In October, the Scottish Government released the Heat in Buildings Strategy: Achieving Net Zero Emissions in Scotland’s Buildings. The strategy presents the approach to achieving the target for net zero emissions from Scotland’s buildings by 2045 and is a key component of the government’s ambitious climate change targets for wider society.

In the same month, the UK Government also unveiled its eagerly awaited Heat and Buildings Strategy. This includes similarly inspired aims, such as the phasing out of all new fossil fuel based heating system installations by 2035.

The coinciding release of the strategies means that the journey to decarbonisation is gradually becoming clearer to the consumer. Both governments have indicated their ambitions to make housing greener.

However, they also recognise that there is no one-size-fits-all to decarbonising the tens of millions of homes with mains gas boilers. This transition will be hugely complex, most likely requiring multiple technologies and approaches.

Industry contest heating up

The major players in the UK’s domestic heating industry – believed to be worth an estimated £17 billion – are already moving to secure their role in line with the new government plans and commitments.

In the future, there will be little place for the out-of-favour gas boiler. Traditional boiler manufacturers are aiming to evolve and align their products for long-term security,  whilst the manufacturers of technologies in their infancy, such as heat pumps, are presented with an opportunity to reform the industry for good.

It’s led to the cottage heat pump industry facing off against the established big gas companies’ development of hydrogen ready gas boilers.

Heat pumps the main contender

Whilst no quick fix technology is currently available to replace boilers, heat pumps are undoubtedly a viable frontrunner. The electric devices are steadily growing in government promotion and consumer popularity, as sales more than doubled in 2021 to give the industry its best ever year.

And, as a key feature of the Heat and Buildings Strategy, homeowners in England and Wales will be offered subsidies of up to £5,000 from April 2022 as an incentive to convert their gas boiler to a heat pump.

Heat pumps extract energy from a lower temperature source such as the ground or air and increase it to an appropriate temperature for a heat source in the home – via a compressor and a circulating structure of liquid or gas refrigerant. This heat can either be directly blown into the property or transferred into the central heating and hot water systems.

The selling point of heat pumps is their potential to greatly reduce carbon emissions if they are powered by low carbon electricity, which much of the UK now is. A new air source heat pump can lower a home’s carbon emissions by over 23 tonnes over 10 years.

Whilst relatively novel, the technology behind air source heat pumps is well established with evident positives. They are typically safer than combustion systems, have a very long lifespan with little maintenance and can double up as an air conditioner during the summer months.

Despite the UK Government and Climate Change Committee (CCC) pushing heat pumps as a blueprint for decarbonising, they are not free of concerns and complications.

Heat pumps are expensive to buy and install upfront and, similarly to boilers, the cost can vary. According to the Energy Saving Trust, an air source heat pump will generally cost around £3,000- £4,000 for an average sized house pre-installation and around £7,000-£13,000 installed – raising concerns about affordability and the average consumer’s willingness to go green.

They are, however, very efficient once installed. With an average efficiency of 250%-350%, a heat pump is likely to save you money, compared to an old gas and oil-fired boiler or electric heating. In well-insulated homes, heating bill savings of as much as 60% can be achieved.

Sufficient insulation is a critical pre-requisite to heat pump success. Commenting on the release of the Heat and Buildings Strategy, the Green Party’s Caroline Lucas described placing heat pumps in Britain’s poorly insulated homes as like “using a teapot full of cracks: it’s leaky, it’s inefficient and it’s a waste of money.“

The UK’s housing stock is among the most poorly insulated in Europe and the current insulation of an ageing stock, like Glasgow’s Victorian tenements, poses a real barrier to the mass roll-out of heat pumps. Whilst heat pumps are suitable for older properties, consumers will need to commit to a considerable amount of insulation upgrades and home disruption to realise their benefits.

Hydrogen

An intriguing alternative that is in the developmental stages to replace gas is the use of hydrogen, the most abundant element in the natural world.

Hydrogen is already being heavily researched as a fossil fuel alternative in transport, and support for its role in heating is growing in popularity.

A study by the Institution of Engineers and Technology (IET) found that there is no clear reason as to why hydrogen gas cannot be seriously considered as a clean and safe alternative on the UK grid. Similar to heat pumps, hydrogen has the potential to be entirely renewable with no carbon emissions.

Hydrogen is also attractive as it requires minimal disruption in terms of new appliances and installation in the home. Consumers would use a hydrogen ready boiler that works almost identically to a traditional boiler. Likewise, the UK’s existing gas pipe system is well placed to make the switch due to the ongoing systematic replacement of old, unsuitable iron pipes over the last 20 years.

However, creating a new national network of hydrogen supply to the country’s homes would be a monumental and extremely expensive challenge that has never been done before. Concerns also exist around the extraction of hydrogen at this scale, as it is likely to be extracted from methane.

The extraction process emits carbon emissions which must be contained and stored through carbon capturing. Carbon capture projects of this scale do not currently exist and the idea is still under development, raising concerns around greenhouse gas emissions as a by-product of hydrogen extraction.

Final Thoughts

It is clear that the challenge of reducing building emissions is no longer just about grand intentions and targets. Whilst these are important to commit to, focus must now turn to ironing out the practicalities of how these will be achieved.

At the moment, the only established technology able to deliver clean heating is the heat pump. Yet, the UK has the worst heat pump sales and second worst installation record in Europe for a country its size. Technology such as hydrogen has potential but is still in the very early stages with many unknowns.

The UK must speed up investment in these industries to meet ambitious targets, with more detail, support and incentives for consumers.

Further reading: more on energy efficiency and decarbonisation from The Knowledge Exchange blog:

Close to home: getting to net zero means decarbonising the UK’s housing stock

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Photo by Erik Mclean on Unsplash

Two years ago, the UK became the first major economy in the world to pass a law pledging to bring all greenhouse gas emissions to net zero by 2050. Achieving net zero means balancing the amount of greenhouse gases we emit with the amount we remove, and it’s a critical factor in tackling climate change by reducing global warming.

But, according to the government’s independent adviser on tackling climate change, the UK will be unable to meet the net zero target without the near-complete elimination of greenhouse gas emissions from 29 million homes. 

The necessity: why buildings need to be decarbonised

In 2014, emissions from domestic properties accounted for 34% of total UK greenhouse gas emissions. A combination of high energy prices and improvements in energy efficiency brought that figure closer to 19%. But those reductions have stalled, and because the UK’s building stock is one of the oldest and most energy-inefficient in Europe, the need to decarbonise is even more urgent.

The benefits: environmental, health, economic

While achieving net zero is one good reason for making our buildings more energy efficient, decarbonisation offers further dividends.

Energy efficient homes are cheaper to run, reducing the levels of fuel poverty that affect millions of households. They can also bring health benefits in the form of healthy air temperatures, lower humidity, better noise levels, and improved air quality.

In addition, a nationwide programme of decarbonising buildings could make a vital contribution to the recovery of the economy from the coronavirus pandemic. A recent inquiry by the House of Commons Environmental Audit Committee  (EAC) found that investing in energy efficiency alone could create 34,000 full-time jobs within the next two years. In the longer term, energy efficiency investment could support an estimated 150,000 skilled and semi-skilled jobs to 2030.

The problems: high costs, skills uncertainty and a “disastrous” insulation scheme

The UK government says the cost of decarbonising homes is between £35 billion and £65 billion. But the EAC believes that this seriously underestimates the cost of upgrading the energy efficiency of homes. With 19 million homes in England requiring energy efficiency installations, this could cost £18,000 per home, even before the installation of a heat pump.

Another area of concern is skills. Brian Berry from the Federation of Master Builders told the committee that every tradesperson in the country needs to be upskilled in retrofit techniques in order to secure overall competency in the supply chain:

“We need to upskill people in the building industry because there is a need to understand how their skills interrelate to one another. You cannot just pick out one bit of this. It has to be seen holistically, which is why I think there needs to be a national retrofit strategy, a clear political direction and a commitment to reducing carbon emissions in our homes.”

The EAC was also outspoken in its criticism of the government’s flagship home insulation scheme. The Green Homes Grant was launched in 2020 to offer £1.5bn in subsidies for insulation and low-CO2 heating. However, only 6.3% of the money has been spent, despite exceptionally high demand.

The committee said the scheme was rushed and poorly implemented, and described its administration as “nothing short of disastrous.” Just six months after its launch, the scheme has now been scrapped. Instead, energy saving upgrades and low carbon heating will be delivered to homes through local authorities in England.

The recommendations: strategies, incentives and insights from overseas

There’s no shortage of suggestions for driving decarbonisation forward. The EAC has called for a government strategy for the next decade to give industry and tradespeople time to upskill and to give households the right signals to invest in energy efficiency. The committee also recommends that VAT on the labour element of refurbishment and renovations is reduced to 5%, a measure also supported by the Royal Institute of Chartered Surveyors.

It’s also worth looking at ideas from overseas. In February, research by the University of Edinburgh reviewed the heat decarbonisations policies in nine European countries. The report highlights particular progress made by the Nordic countries in decarbonising buildings’ heat supply and in making greater use of electricity as a potential future source of low-carbon heating.

The solutions: putting promises into practice

While the challenge of decarbonising homes may be daunting, a growing number of housing providers are taking steps to cut emissions from domestic properties.

The Welsh Government has provided £20m in funding for Optimised Retrofit. Through this scheme, 28 social landlords can retrofit homes and test the ways heat and energy are produced, stored and supplied. If it’s successful, the scheme could be the model for decarbonising all of Wales’ 1.4 million homes by 2050.

Last month, Sutton Council launched an energy-efficiency programme to transform draughty properties with high energy bills into net zero carbon houses which are warmer and cheaper for residents. The programme is based on a successful Dutch initiative known as Energiesprong (energy leap). In the Netherlands, 1300 net zero energy refurbishments have been completed, and a further 500 are being built. The initiative involves insulating the external walls and roof areas, replacing windows and doors and installing new solar panels to power a new central heating and ventilation system. Sutton is the first London borough and the latest UK housing provider to adopt the programme, which has already been taken up in Nottingham and Maldon.

Many housing associations are at the start of their journey to net zero, but a National Housing Federation survey has shown that two thirds of social housing landlords have started planning to make their homes greener and warmer. Three quarters (74%) of survey respondents expect to retrofit homes in 2020-21. A similar proportion (73%) expect to retrofit homes in 2021-22. However, the survey also reported that lack of finance and continuing policy uncertainty remain major obstacles to decarbonising homes. That’s important, particularly given the cost of decarbonisation of social housing – £104bn by 2050.

The future: decarbonisation begins at home

Local authorities, housing associations, and the construction industry are all keen to transform existing homes into greener, warmer places to live in. At the same time, residents – especially those having to make the choice between heating or eating – need to be taken out of fuel poverty. And, as we’ve seen, achieving net zero will only be possible by making the nation’s housing stock more energy efficient.

With so much riding on decarbonisation of domestic properties, the need for more funding as part of an ambitious policy approach is clear. As the UK prepares to host the critical climate change talks in Glasgow this year, there has to be a better understanding that tackling the climate emergency starts on our own doorstep.

Further reading from The Knowledge Exchange blog on housing and energy efficiency

Build back better: is now the time for Green New Deals? – Part 2

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A window of opportunity

In policymaking, there is a concept known as the “Overton Window”, which describes the range of policies that politicians can propose without being considered too extreme by the population at large. This window of opportunity can be shifted and can allow for policies that in the past may have been considered unthinkable and radical to become mainstream and even sensible.

The impact of Covid-19 and the public health measures that have been required to suppress the virus, have undoubtedly resulted in a shift in the “Overton Window”. Policy interventions, such as the Job Retention Scheme and national lockdown, which involved massive amounts of government spending and restrictions to every aspect of our day-to-day lives, suddenly became normal and were largely approved of by the public.

In these circumstances, the concept of the Green New Deal, a policy package which involves large amounts of government spending, designed to create green jobs, develop green infrastructure and modernise the economy, may no longer be such an unfeasible idea.

Build back better: a green recovery

The economic impact of Covid-19 is expected to result in a 5.2% contraction of global GDP, amounting to the deepest global depression since 1945. In order to recover from this contraction, governments are formulating unprecedentedly large economic stimulus packages, designed to mitigate the economic and social damage created by the pandemic. Already there are numerous examples of governments utilising aspects of the Green New Deal within their economic recovery plans.

European Union

Next Generation EU – A European Green Deal

Prior to the Coronavirus pandemic, the European Commission was already working on creating a European Green Deal, which would support the EU transition to climate neutrality by 2050. After the onset of the pandemic, the European Commission moved to position the Green Deal as a key pillar of the EU’s €750 billion recovery package, known as Next Generation EU. 25% of the recovery package has been dedicated to funding climate action, whilst the entire package features a commitment that any money spent as part of the EU’s economic recovery must “do no harm” to the EU’s climate neutrality goal. The recovery package includes policies that are similar in nature to other Green Deals, including:

  • a €40 billion ‘Just Transition Fund’, to alleviate the socio-economic impacts of the green transition and diversify economic activity;
  • a €91 billion a year fund to improve home energy efficiency and develop low carbon heating;
  • the introduction of an EU-wide border tax on carbon-intensive industrial imports with the potential to raise €14 billion.

French Government

France Relaunch

The French government’s recently announced €100 billion stimulus package, includes a €30 billion package of measures designed to aid France’s transition to carbon neutrality. The measures set out within the package incorporate core elements from Green New Deals, such as developing cleaner forms of transport and improving the energy efficiency of buildings. The package includes the following green measures:

  • a €11 billion investment in developing and encouraging the use of green transport methods, nearly €5 billion of which will be used to upgrade rail lines to encourage freight traffic from road to rail;
  • a €6 billion investment to help improve the energy efficiency of homes and other buildings;
  • A €2 billion investment to help develop the hydrogen sector.

Scottish Government

Protecting Scotland, Renewing Scotland

Within this year’s Scottish Government Programme, it is evident from the first page that it views the need for economic recovery as an opportunity to create a  “fairer, greener and wealthier country”. The programme explicitly describes the measures contained as “the next tranche of our Green New Deal” and borrows extensively from existing Green New Deals, with policies including:

  • a £100 million green Job Creation Fund;
  • a £1.6 billion investment to decarbonise the heating of homes and other buildings;
  • a £62 million Energy Transition Fund to support businesses in the oil, gas and energy sectors over the next five years to grow and diversify;
  • capitalisation of the Scottish National Investment Bank with £2 billion over ten years, with a primary mission to support the transition to net zero emissions.

UK Government

A Plan for Jobs

A key element of the UK Government’s plans to support and develop the labour market is the creation of green jobs, through investment in infrastructure, decarbonisation and maintenance projects. Improving the energy efficiency of buildings is a principle which is at the core of the Green New Deal. The Plan for Jobs includes similar proposals, such as:

  • a £2 billion Green Homes Grant scheme that will provide homeowners and landlords with vouchers to spend on improving the energy efficiency of homes across the UK;
  • a £1 billion Public Sector Decarbonisation Scheme that will offer grants to public sector bodies, including schools and hospitals, to fund both energy efficiency and low carbon heat upgrades;
  • a £40 million Green Jobs Challenge Fund for environmental charities and public authorities to create and protect 5,000 jobs in England.

Final thoughts

The concept of the Green New Deal is one that appears to evolve and shift as time goes on. This is unfortunately to be expected as time runs out for governments to take meaningful action to avert rising global temperatures. The transition to carbon neutrality is one that will undoubtedly result in massive changes to almost every aspect of our day-to-day lives, and therefore it is not surprising that the journey to reach this point may require bold and unprecedented action.

However, prior to the Coronavirus pandemic, it would have been unimaginable to consider the levels of spending and intervention that governments would be required to take in order to implement a Green New Deal. The shift to carbon neutrality involves a complete reimagining of the economy and requires a great deal of public support, in particular when the energy transition may threaten the jobs of those who work in carbon-intensive industries.

In a post-Covid era, the concept of governments spending huge sums of money and making unprecedented interventions is now our everyday reality. The economic consequences of the pandemic will require an extraordinary response to ensure that its legacy is not one of increasing levels of unemployment, inequality and stagnation. In this new world, the ambition and wide-ranging nature of the Green New Deal may no longer be seen as unfeasible. In fact, as can be seen in the UK and Europe, governments are already looking to implement various elements of the Green New Deal as part of their economic recovery packages. Perhaps the Green New Deal is about to have its time.

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Part one of this blog post was published on Monday 14 September.

Read some of our other blogs on climate change and the impacts of Covid-19:

Build back better: is now the time for Green New Deals? – Part 1

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From the signing of the Paris Climate Agreement to the pressure placed on governments by worldwide school strikes, the issue of climate change and its effects on the world around us has increasingly risen to the top of the political agenda. Across the world, governments have begun to take various forms of action in an attempt to prevent further rises in global temperatures.

In particular, the concept of a package of measures designed to address climate change and economic inequality, known as the Green New Deal, has gained particular prominence in the past few years.

This two-part blog looks at the concept of the Green New Deal, how it has influenced global policy and its relevance as a means of economic recovery in a post-Covid world.

What is the Green New Deal?

The original concept of a Green New Deal was proposed in a report published by the New Economics Foundation in 2008. The report set out a range of policy proposals that would allow the UK to recover from the global financial crisis, whilst tackling the threat posed by climate change. The scale and ambition of the Green New Deal was largely inspired by the wide-ranging New Deal package of reforms and investment carried out by President Roosevelt, that enabled the United States to recover from the Great Depression.

In a similar vein, the report made recommendations that addressed a wide range of policy areas,  these included:

  • a £50 billion per year programme to create a low-carbon energy system that will involve making “every building a power station” by maximising energy efficiency and renewable energy generation;
  • creating and training a “carbon army” of workers to provide the human resources required for a vast environmental restructuring programme;
  • re-regulating the domestic financial system to ensure that the creation of money at low rates of interest is consistent with democratic aims, financial stability, social justice and environmental sustainability;
  • minimising corporate tax evasion by clamping down on tax havens and corporate financial reporting.

Green New Deal: 2.0

Over time the Green New Deal has evolved and has spread internationally. Following the 2018 US Elections, the concept gained increasing prominence in the United States. Advanced by newly elected Congresswoman Alexandria Ocasio-Cortez and Senator Ed Markey, the Green New Deal set out a vision for the United States to transition to become carbon neutral in just ten years.

In a similar vein to the ambition of both the New Deal and the original Green New Deal, the package proposed included a variety of measures that crossed a range of policy areas, including:

  • meeting 100% of the power demand in the United States through clean, renewable, and zero-emission energy sources;
  • upgrading all existing buildings in the United States and building new buildings to achieve maximal energy efficiency, water efficiency, safety, affordability, comfort, and durability, including through electrification;
  • providing all people of the United States with high-quality health care; affordable, safe, and adequate housing; economic security; and access to clean water, clean air, healthy and affordable food, and nature;
  • guaranteeing a job with a family-sustaining wage, adequate family and medical leave, paid vacations, and retirement security to all people of the United States.

Criticism of Green New Deals

The concept of the Green New Deal is often criticised for being too expensive to be implemented. Opponents of the US Green New Deal believe the timeline for the United States to become carbon neutral in just ten years is unrealistic, and the estimated cost of  $12.3 trillion is too high. Critics also argue that the proposals are too vague and often fail to consider the seismic changes the measures may have on wider society, particularly for those who work in industries directly impacted by the energy transition.

In short, critics of a Green New Deal believe that as a package it is simply too large, both in ambition and price, to be implemented successfully. The level of government action required to implement such wide-scale reform would be unprecedented in peacetime and could potentially require citizens to make substantial changes to the way they live their lives. Until wider society is willing to accept a substantial increase in government spending and changes to their way of life, it is unlikely that a Green New Deal will be able to be effectively implemented.

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Part two of this blog post is available now.

Read some of our other blogs on climate change and the impacts of Covid-19:

Is this the future of social housing?

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Goldsmith Street: Mikhail Riches / Tim Crocker 2019

Last year, a development of 105 homes on the outskirts of Norwich became the first social housing project to win the prestigious Royal Institute of British Architects Stirling Prize.

The Goldsmith Street estate was built by London architecture firm Mikhail Riches for Norwich City Council, and is the largest Passivhaus scheme in the UK. Passivhaus is an approach to building that provides a high level of occupant comfort while using very little energy for heating and cooling.

Goldsmith Street has been carefully thought through, and adjusted to take account of changing economic and environmental circumstances. In 2008, Norwich City Council selected Mikhail Riches to design the estate. The council had intended to sell the site to a local housing provider, but when the financial crash happened, the council decided to develop the site itself.

The architects have striven to ensure that the development acknowledges the historic context of the site:

“The design seeks to re-introduce streets and houses in an area of the city which is otherwise dominated by 20th century blocks of flats… Street widths are intentionally narrow at 14m, emulating the 19th century model.”

The homes themselves have been built to strict Passivhaus standards which include:

  • very high levels of insulation;
  • extremely high performance windows with insulated frames;
  • airtight building fabric;
  • ‘thermal bridge free’ construction;
  • a mechanical ventilation system with highly efficient heat recovery.

Passivhaus standards typically reduce heating energy consumption by up to 90% as compared to traditional housing. For residents in the Goldsmith Street development, heating bills should be about £150 a year.

Eco friendly housing

In recent years, local authorities and housing associations have been responding to the increasing demands for housing stock to have lower maintenance costs, lower energy costs and fewer emissions of carbon and other gases that can be harmful to the environment and human health.

The Passivhaus Trust has highlighted a growing number of local councils and housing associations that have been exploring Passivhaus standards as a way of tackling these issues.

One of the most ambitious social housing Passivhaus projects is Agar Grove in the London Borough of Camden. Previously a 1960s estate with an unenviable reputation, Agar Grove has been rebuilt with affordable and energy efficient homes. The first phase, involving 38 social rented homes was completed in 2018, and has already won awards for sustainability and community consultation. Once complete, the 500-home estate will be the largest Passivhaus development in the UK.

Cunningham House, Glasgow: Page\Park Architects

In Glasgow, the city’s first Passivhaus development for social rent was opened by Shettleston Housing Association in September 2019. The project provides nineteen new homes for older people in an innovative design that combines a five storey Passivhaus tower with a converted church building. All of the homes benefit from high levels of thermal insulation to augment the sandstone coat of the existing church structure. The project was named the best affordable housing development at the 2019 Inside Housing Awards.

Meanwhile, the City of York Council has released plans to build more than 600 homes across eight sites over the next five years that will be built to carbon zero standards. The council has pledged that 40% of the homes will be affordable, with 20% retained for social renting. The developments, also designed by Mikhail Riches, will have very high energy efficiency standards that exceed standard Passivhaus levels. It’s predicted that residents’ heating bills could be around £60 a year.

Homes for the future

There is a now a growing sense that housing, as well as consuming great amounts of energy, can also be a positive force for change. Energy efficient homes can make a strong contribution to climate change adaptation measures, can make housing more resilient to increasingly common extreme weather events, and can provide opportunities to improve economic development, quality of life and social equality.

In the past year, with many local councils, combined authorities, devolved administrations and the UK government declaring ‘climate emergencies’, the pressure on housing providers to lead by example has intensified. At the same time, governments are setting out plans to ensure new homes are more energy efficient.

The Ministry of Housing, Communities and Local Government is currently consulting on the Future Homes Standard, which includes proposals to increase energy efficiency requirements for new homes from 2025. Similarly, the Scottish Government plans to introduce new regulations to ensure all new homes use renewable or low carbon heating from 2024. A 2019 report commissioned by the Welsh Government has recommended major changes to most homes in the country, including a major programme to improve insulation and heating.

Goldsmith Street: Mikhail Riches / Tim Crocker 2019

The success and widespread publicity enjoyed by the Goldsmith Street project is likely to encourage other local authorities and housing associations to explore the possibilities of Passivhaus. But although the benefits are great, Passivhaus also presents significant challenges for housing providers.

Up-front costs are higher for Passivhaus developments, and there are additional maintenance and replacement costs. The technical requirements are strict, in order to ensure the maximum levels of airtightness and insulation. In addition, there is a shortage of skills needed to achieve the exceptional standards of construction demanded by Passivhaus (Norwich City Council has overcome this by bringing together a network of specialist contractors with the necessary expertise to work on Passivhaus projects).

Despite the challenges, Passivhaus seems to be offering a compelling answer to the significant problems of fuel poverty, climate change and the demand for high quality, affordable housing. As more local authorities and housing associations demonstrate its affordability, Passivhaus is breaking away from its image as a resource for the privileged and moving into the mainstream of social housing.

Further reading: blog posts from The Knowledge Exchange on energy efficiency at home

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