Towards a Circular Economy for Construction in London - Event Summary

Simon Guy • 30 June 2022

As part of the series of events for London Climate Action Week, we hosted an online event to consider how we can accelerate the progress towards a more circular economy for construction in London.


A circular economy in construction means that buildings should be designed to create minimal waste by being long-lasting, allowing them to be easily repaired and refurbished, and to be deconstructed at end of life.


Katherine Adams, co-founder of Reusefully, the research and consultancy organisation dedicated to circularity in the built environment, opened proceedings and described how circularity is about ensuring materials flow in our economy, looking at longevity, productivity and value. It goes beyond reuse and recycling, aiming to maintain the environmental and economic value of products.


There is an intrinsic link to carbon and climate change, with circularity actions addressing upfront and embodied carbon, through to the carbon impact of reuse and recycling.  


As well as reducing carbon, there is a need to be much more efficient with the resources we use, due to the impact of global population growth and the loss of biodiversity and water stress. Only 20% of construction materials comes from secondary sources in the UK, and this is often low grade or low value materials such as aggregates. The price of materials and supply shortages are beginning to have an increasing impact.


We remain very wasteful as an industry and have not reduced our overall waste by much. Whilst recovery rates are high (at around 92%), this is often for low value or downcycled applications. 5 million tonnes of construction and demolition waste is still sent to landfill.


The Green Construction Board with the support of Reusefully has produced an interactive “Routemap for Zero Avoidable Waste”, which is a highly useful document she said, helping to understand the actions that are important across different life cycle stages in construction.


Some clients and large developers are also starting to make commitments for reducing carbon and improving sustainability. British Land, for example, are starting to set percentage targets for deconstruction and take-back of materials, together with upcycling and reuse of materials.


Gilli Hobbs, also a co-founder of Reusefully, provided a perspective on circularity in London, highlighting the new London Plan guidance for Circular Economy Statements which gives greater weight to the value retention of existing structures and buildings, shifting the emphasis to using and reusing what we have got. The guidance now requires ‘pre-redevelopment audits’ to set out the justification for demolition or otherwise, encouraging the reuse or retention of whole building assets in part or whole where possible. If demolition is required, pre-demolition audits are then undertaken, with a much tougher set of requirements in the recent guidance, which is a very welcome development.


Gilli provided examples of how this value hierarchy is starting to work, aiming to get to the highest value of reuse or recycling where buildings are no longer required. This includes Meridian Water, a project in Enfield which is a 30 year regeneration programme which Gilli is working on. The project is taking a life cycle approach to circular economy, even going so far as linking existing buildings ‘donors’, with new construction projects elsewhere. Meridian Water is also looking at future design issues, with a focus on  greater adaptability and reuse.

Christian van Maaren of the Excess Materials Exchange, based in Amsterdam, said that in many ways the circular economy is ‘stuck in the future, whereby everybody wants to see it happen, but the practicality of matching supply and demand of secondary materials is difficult’. He says that London has now moved ahead of the rest of Europe in circularity.

Christian described how material or resources passports could work in future, and the need for standards in this area. He highlighted the work the Excess Materials Exchange is doing in ‘collective intelligence’ to enhance data on reusable building materials, using the knowledge and experience of experts in the field. Christian is also involved in the Enfield project, and on other projects such as Schiphol Airport looking at how tools such as RFID tags or OR-codes for reusable materials can help enhance value. The information in passports also makes it much easier to understand life cycle impact of products.


Nitesh Magdani, founder of Net Positive Solutions outlined his role advising on design solutions at Meridian Water, through wide stakeholder engagement to promote circularity and the reduction of whole life carbon. This involves the creation of a route map for stakeholders (clients, designers, contractors and others) and the generation of circular business models. He also shared case studies from his experience of circular design and construction in practice’, highlighting examples including ‘Circl’, the ABN AMRO Circular Pavilion in Amsterdam which is designed to help them as a client understand circular economy themselves and showcase this as a concept to their banking customers. Lendager Group in Denmark have an example taking repurposed bricks to make construction panels, designing in reuse as architects and developers in a project called Resource Rows. 

Examples in London, include the Circular Building created for the London Design Festival a couple of years ago, which explored how you can design for the next life and reassembly, maintaining residual value after first use. Nitesh, Katherine and Gilli are also working with the whole life carbon community to quantify the carbon saving value of reuse and other circularity approaches, which is not currently understood or recognised within the current whole life carbon debate.


A lively discussion followed the presentations, highlighting topics such as the metrics that are used for measuring carbon impact and their relationship to circular economy thinking, the materials value retention hierarchy, the need to change culture and ways of working in the construction industry. Both speakers and attendees agreed that creating triple bottom line analysis together can be very impactful in winning hearts and minds in favour of circularity. Highlighting the quick wins, the (financial and carbon) impact of high value materials also helps, together with linking demolition and redevelopment with reuse. All agreed we have made a start, evidenced by some of the research and case studies highlighted, but only a start and we need to accelerate our efforts to bring all stakeholders on board.

by Gillian Hobbs 4 December 2025
How can planning policy positively advance the cause of circularity for the construction sector and what are leading municipalities doing to try to create an environment where reuse and circularity can thrive? Join us on January 29th 2026 for an online webinar principally aimed at planners and planning consultants that will delve into planning policy and explore how it can influence and support the development of a more circular construction sector.  You will hear from Hrabina Nikolova-Laxness of Westminster City Council , who are playing a prominent role driving sustainability standards for one of London’s largest boroughs, and from Pernille Kernel of the Capital Region of Denmark , who will be showcasing some of the construction circular economy interventions that now affecting more than 2 million Danes in Copenhagen and surrounding areas. This will be a great meeting of minds between the UK and Denmark, in an event chaired by our Gilli Hobbs , who chairs the British Standards committee for Circular Economy in Construction and is co-lead for the European Working Group considering standards for pre-deconstruction and pre-redevelopment audits and evaluation. For more information and to sign-up for the event register here on Eventbrite.
by Gillian Hobbs 21 November 2025
As COP30 closes today in Brazil, most headlines have centred on forests and energy. But there’s another critical question we must ask "where will people live in a climate-safe future? Gilli Hobbs of Reusefully and Ana Quintas of Sustenuto reflect on affordable housing, sustainability and quality. Affordable housing isn’t only a social priority, it’s a climate imperative. Sustainable development can only succeed if construction, housing, and social impact move forward together. Around 11 years ago, whilst at BRE, we were invited to a pan government and industry workshop to discuss affordable housing and priorities to improve sustainability and quality in the next (highly ambitious) phases of the Minha Casa Minha Vida programme. There had already been around 3 million homes built over 7 years. An impressive feat that resulted in millions of Brazilians having formal housing for the first time. However, there were issues arising from these developments that needed to be resolved prior to the next wave of developments. In 2015, we launched a programme with Caixa Econômica Federal and UNDP to strengthen sustainability in Brazil’s social housing sector - Advancing the Sustainability of Social Housing Developments in Brazil. The goal was to raise environmental performance and building quality in Brazil’s Minha Casa Minha Vida programme, which has provided millions of homes for low-income families. These earlier housing developments offer important lessons, while future programmes present opportunities to embed higher sustainability standards from the start. To support this evolution, our team and partners developed a set of tools and methodologies: Sustainability Standard for Social Housing : A framework to support governance, tools, training, and guidance to programme managers and operators. Balanced Scorecard : A holistic evaluation approach covering infrastructure, services, and the social, economic, and environmental sustainability of communities. Post-Occupancy Evaluation : A robust methodology adapted to the Brazilian context, enabling consistent data collection on housing performance and resident experience. Impact Assessment : Although data gaps limited a full evaluation, we provided strategic guidance to strengthen future assessments. Dissemination Phase : Workshops with industry, associations, and residents, supported by CAIXA, UNDP, and the Ministry of Cities, ensured wide engagement and knowledge sharing. This work marked the beginning of a long-term journey: embedding sustainability not just in buildings, but in governance, urban planning, and community development. Watch this short video on how Brazil approached sustainable housing challenges a decade ago. Why this matters today Buildings account for nearly 40% of global energy-related emissions. Every affordable home built without sustainability locks in decades of inefficiency, higher costs, and increased climate risk for families who can least afford it. As COP30 ends, the real work begins. Climate justice isn’t only about forests and energy transitions . It’s also about homes—where people live, raise families, and build their futures. Sustainable development only succeeds when housing, construction, climate resilience, and social impact move hand in hand. COP30 reminds us of a simple truth: climate justice starts at home. What did we learn? Our project was quite intense, involving many stakeholders from across Brazil. The level of collaboration and determination to provide more sustainable and resilient homes for the poorest segment of society was very impressive – for which it won an award as you can see below.
by Simon Guy 13 November 2025
45 Waterloo Street is a 95,500 sq ft office building acquired by RoundShield and CEG Group earlier this year which is currently undergoing refurbishment by the new owners. This includes a full internal refurbishment, refreshed external elevations, a new external roof terrace and removal of the large, glazed atrium to the rear of the building. The building is situated in Glasgow’s busy financial services district.
by Zoe Culverhouse 11 November 2025
Part of driving the transition to a circular economy is highlighting the truth about the effect that we’re having on the environment, the challenges we are facing, and the issues that need to be addressed. Reusefully's Zoe Culverhouse reflects on some of the learning from the recent ASBP Reuse Summit, and the need to focus on the positives we are starting to see. For most of us, and certainly for those of us who attended the ASBP Reuse Summit, the scary truths are enough to make us change our ways and work to find solutions. It is also true however, that for some having access to this information is not enough to spur them to create change. So, the question I’m sure we all want answered is, what will? Leading by example, highlighting the benefits, sharing successes, and proving possibilities were key themes and drivers discussed throughout many of the talks. There are lots of positive things happening in the world of circularity and sustainability; global risks for climate change are being recognised, there has been growth is renewables, embodied carbon legislation is improving, we are seeing successful reuse of numerous materials and products, and The International Court of Justice (ICJ) issued an advisory opinion that climate inaction can be a breach of international law, to name a short few. Potentially one of the most exciting things to see is that there is so much innovation in this space, many of the speakers spoke about the idea of ‘possibilism’ and these innovative projects are showcasing just that. At Euston Tower, Arup and 3XN GXN are extracting panels of the concrete floor for reuse in another structure. At the Brunswick Centre Hub, Heyne Tillett Steel are jacking and lowering floor slabs to increase floor to ceiling heights, and at Resource Rows, Lendager cut out and reassembled old cement-mortar brick facades into new facade modules. Reusefully were involved with one of these projects, proving the initial pre-demolition audit for Euston Tower. Unfortunately, I don’t have an answer to our question of what will drive change, but I can share with you some of the topics shared at the ASBP Reuse Summit. Salvatore Gangemi and Ivo Kolchev, sustainability managers at McLaren, spoke about some of the risks of inaction around sustainability and circularity that organisations may be facing now and in the future. These include regulatory, reputational, and operational risks and may be key drivers for those who I fear will otherwise make no attempt at change. Though risk is a big driver it is not ideal to force people into change, so how do we make them want to? Many of the speakers shared ways in which we might do so; we need to get them involved, we can challenge norms around procurement and business as usual, lead by example and share our successes and possibilities, share the benefits (like winning awards, professional pride, and faster planning processes), and one of my favourite suggestions, we can trick them! Well not really, but this idea stemmed from discussion around renaming reuse and shifting terminology to change perception, dubbed ‘sneaky reuse’. Some suggestions included renaming reused materials as ‘carbon free materials’, ‘pre-loved’, or ‘extended life products’. A great example of success is Durley Chine Environmental Hub, designed by Footprint Architects. It is an amazing building that has the power to get people excited about reuse. When Philip O’Leary, Director at Filros Timber Consultancy and Board Member of Woodknowlege Wales, shared this case study with the group you could hear the amazement at its beauty. Some may be surprised to know that it is partially constructed and clad with reclaimed timber. You may not think you’re interested in ‘timber reuse’ but I have no doubt that this building interests you, the reuse of the reclaimed timber alongside other sustainable elements don’t just make it beautiful, they give it a story. It is now an exemplar and award-winning building for sustainability. Though it may sometimes feel like it, most people aren’t actively trying to push against circularity and reuse. Ben Holmes Associate Director & Head of Sustainability at Elliott Wood, spoke about how giving people the tools to succeed is key. His implementation toolkit shows us that to be successful project teams need, capability, motivation, and opportunity. Capability can be built by providing tools that can be used to reduce the information gap. Opportunity can be created by processes such as getting an audit done as early as possible and following up through the project. Motivation can be sustained through storytelling, gamification, workshops and competitions. So, my main takeaways from this event are, to focus on the positives and the successes we have already seen, share the bright and beautiful side of reuse, remember to stay excited about progress and innovation, and base your world view around what is possible. Some further reading and information: Euston Tower , Arup and 3XN GXN Heyne Tillet Steel Lendager’s Resource Rows Durley Chine Environmental Hub , Footprint Architects ASBP’s Reuse Now campaign You can connect with Zoe Culverhouse on LinkedIn
by Katherine Adams 27 October 2025
We spend 80-90% of our time indoors, and the workplaces, leisure spaces and retail outlets we use are of fundamental importance to our lives, our health, wellbeing and our economy. However the market that supports the creation and management of interior spaces is highly wasteful and carbon heavy.
by Simon Guy 18 June 2025
A pioneering scheme to create a pathway to net zero carbon emissions for a North Yorkshire industrial estate is providing a viable model for decarbonisation in rural industrial estates. The Decarbonising Dalton project was supported with funding from Innovate UK and match funded by Dalton Business Partners, carried out a 12-month feasibility study at Dalton Industrial Estate near Thirsk. The study examined emissions associated with power, heat, transport and the circular economy, developing strategies to reduce them effectively. The study provided individual assessments for each business on the estate, resulting in a tailored action plans to achieve net zero while minimising the need for carbon offsetting. The initiative was delivered in five key phases: business needs assessments, quick-win reductions, shared onsite opportunities, offsite interventions, and collation and knowledge sharing.  Following the circular economy work package undertaken by Reusefully (which focused on the individual business’ material procurement needs) the Dalton Industrial Estate Exploitation Plan highlights that in 2026 partners should promote industry symbiosis across the estate. The Plan highlights how businesses can collaborate to agree on common material requirements, enabling them to share resources more efficiently. By aligning their procurement strategies and identifying opportunities for material reuse, businesses can significantly reduce waste and reliance on external suppliers. This cooperative approach would not only enhance sustainability but also create a more resilient and interconnected industrial ecosystem, driving further progress towards the Estate’s decarbonisation goals.
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