Project: Kingsbridge Estate Options Appraisal 
Project: Kingsbridge Estate Options Appraisal 

At the start of any new project we are dedicated to exploring the possibility of retaining and reusing any existing buildings or structures, through both technical analysis and consultation with the people who use them.

We are currently working with the residents of Kingsbridge Estate and One Housing on an Options Appraisal to help shape the future of the estate. Options range from leaving the estate as it is, to deep retrofit of existing buildings, to full redevelopment.

Each option is assessed against a range of criteria including the whole life carbon, financial viability and deliverability. The results are analysed and presented to residents in a clear and easy to understand format that enables them to give feedback. Consultation takes place both in-person, and through online platforms in a variety of different ways to reach as many residents as possible. The project website can be viewed here:

The process involves five rounds of consultation where the range of options are presented to residents, discussed, and reduced to arrive at an option that a majority of residents support and is deliverable. Following consultation, residents will be asked to vote on whether they would like the preferred option to go ahead.

We are signatories of Architects Declare, and these are the actions we are taking in response to those commitments

Advocacy: Architects Declare Practice Guide 

The Architects Declare Practice Guide has launched as an open source document to help signatories convert their declaration into meaningful action. Divided into two parts, the first addressing a Practice Roadmap, and the second on different aspects of Project Design, the live guide will evolve over time as the industry innovates, finding new solutions to climate and biodiversity challenges. The guide was produced and written by volunteers with Diana Dina, our head of Sustainability and Regenerative Design playing a key part in the development of this collaborative document.

Studio: Our Carbon Footprint Report 2020 

As part of our commitment to the reduction of our environmental impact, both as a business, and through our design work, we have been monitoring and recording our office carbon footprint since 2019. Between April 2020 and April 2021 this is estimated at 67 tonnes CO2e, or approximately 0.66 tonnes CO2e/person. This compares with 73 tonnes CO2e (0.9t per person) in the previous year. Many of the Greenhouse Gas (GHG) emissions were lower as would be expected during the pandemic, for instance reduced project related travel. Other reduced emissions linked to staff commuting were counterbalanced by a rise in GHG emissions due to working from home.

Research: Building with Natural Materials 

HT studio members Alex Johnstone, Aneesha Irika and Diana Al-laham spent the day volunteering with Citizens Design Bureau on the construction of their Studio 3 Arts project in Barking. Haworth Tompkins support the volunteering process by offering an annual day of leave to everyone undertaking similar schemes, either inside or outside of the architectural sphere. Members of the public are involved in this particular community project to help build an extension to the centre, by laying the straw bales that form the walls. With instruction from the School of Natural Building, this was an excellent way to learn about alternative methods of construction, and building with natural materials.

Research: Could professionals within the Built ​Environment be held to account in the future? 

Associate Hannah Constantine completed her MSc in Construction Law and Dispute Resolution at Kings College London at the end of 2020.

Her final year dissertation aimed to proposition whether a new class of negligence is emerging within the Law of Tort, in response to the growing urgency surrounding climate change, and whether professionals within the Built Environment could be held to account in the future for their contribution, both passively and proactively, asking the question of whether we are doing enough.

Project: Refurbishment vs Demolition 

We are committed to retaining and refurbishing existing buildings wherever this is a feasible and suitable solution, as part of our AD declaration.

Recently we worked with our structural engineers, Heyne Tillett Steel, to assess and compare the carbon emissions between two options: retain, refurbish and extend vs demolish and rebuild in one of our projects for a London local authority.

Research: Post-Occupancy Evaluation - Liverpool Everyman Theatre 

As co-founders of the Architects Declare Climate and Biodiversity Emergency movement (AD) Haworth Tompkins have acknowledged the significant impact buildings have on climate and on global ecosystems. By signing up to the AD declaration points HT have committed to assess and re-think our approach to design.

One important aspect of this is the decision to carry out in-house light-touch Post Occupancy Evaluation (POE) studies aiming to identify strengths of completed projects, possible areas for improvement, and further learning for the design team, alongside our clients and consultants.

The Everyman Theatre in Liverpool was used as a test case to see how the Practice could embed light-touch Post Occupancy Evaluation (POE)/Building Performance In-Use reporting across our office portfolio. The Everyman was chosen because it uses an innovative assisted natural ventilation system and the design team were keen to understand how well it was working, to inform the design of similar performing spaces.

Studio: HT Architect Simon Ricketts on WUFI 

WUFI is an acronym that stands for Wärme-und Feuchtetransport instationär, which translates in English to 'Transient Heat and Moisture Transport'. It’s an advanced moisture modelling programme designed by the Fraunhoefer Institute in Germany, enabling highly accurate building physics decision-making. Haworth Tompkins are keen to preserve existing buildings and upgrade them as much as possible, not only to keep our important historic heritage, but also to reduce the environmental impact of projects.

Studio: Diana Dina on AJ Climate Champions podcast 

Diana Dina, our head of sustainability and regenerative design is interviewed by Hattie Harman in the fourth episode of the AJ’s Climate Champions podcast series. She shares her insights on how to be a changemaker in a large architecture practice, and how Haworth Tompkins is looking to collaborate with other practices on the climate emergency. To listen, click here.

Project: BREEAM Outstanding for Kingston School of Art 

Haworth Tompkins’ major refurbishment of Kingston University’s Mill Street Building for Kingston School of Art has been awarded BREEAM Outstanding, with a score of 86.2%.

BREEAM provided a structure for benchmarking and assessing the sustainability aims with the team paying attention to measures reducing energy use and CO2. BREEAM was supplemented by Haworth Tompkins’ own sustainability toolkit, with further priorities incorporated relating to wellbeing, adaptability and resilience.

Studio: Our Carbon Footprint Report 2019 

The current climate and biodiversity emergency highlighted by the Architects Declare movement – now celebrating its 1 year anniversary - has prompted individuals and organisations to become aware and take responsibility for their impact on the environment.

As founding signatories of the AD declaration, HT have started to calculate their office carbon foot­print with the aim to find ways to reduce it, and then to offset the remaining carbon emissions in a way that is meaningful for the environment.

Research: Sustainable and regenerative design: reading list, research and design tools 

Here are our suggestions for a broad reading and research list - including articles, books, databases, tools and guides to help understand the problems and the solutions. Please click for link:

Regenerative Design

We fooled ourselves that sustainability was getting us where we need to go - Michael Pawlyn, Dezeen

Doughnut Economics - book by Kate Raworth

Circular Economy

Design for a Circular Economy - Mayor of London/Good Growth Primer

UKGBC Guidance on Circular Economy

Studio: Haworth Tompkins - Climate Emergency Response 

We are co-founders of the Architects Declare movement launched in May 2019.

Click here for a summary of our actions, events and activities organised as a response to the climate emergency

Studio: Passive House Training 

In a bid to adopt more regenerative design principles, and to design architecture and urbanism that goes beyond the standard of net zero carbon in use, a third of our architects are receiving specialist training this week, focusing on Passive House.

Advocacy: Future Homes Part L consultation 

Haworth Tompkins are supporting LETI’s response to the Part L consultation, focusing on the need for:

- improved fabric performance requirements
- use of metered energy (kWh/m2yr) as principal metric for performance evaluation
- retaining the power of Local Authorities to set carbon reduction targets beyond Building Regulations

Advocacy: The London Energy Transformation Initiative 

Haworth Tompkins are an organisational supporter of the London Energy Transformation Initiative (LETI), a network of over 250 built environment professionals who are working together to put London on the path to a Zero Carbon future. LETI have lobbied for policy change and their recommendations have been included in emerging London Policy. These recommendations include energy use disclosure, use of updated carbon factors and whole life carbon assessments for referable schemes.

Event: Rethinking the way we design and work 

‘Rethinking the way we design and work’ was the theme of a day held by Haworth Tompkins focusing on the Architects Declare emergency goals and commitments. We acknowledge that addressing the AD goals will require an important change in our design process, and in our studio, and this was an excellent opportunity to get everyone in the office involved in the discussion.

Project: The Den - a low-carbon portable, community theatre 

Minimum environmental impact and social equity are at the heart of the design that composes this super-lightweight theatre.

Advocacy: Architects Declare 

The twin crises of climate breakdown and biodiversity loss are the most serious issue of our time. Buildings and construction play a major part, accounting for nearly 40% of energy-related carbon dioxide (CO2) emissions whilst also having a significant impact on our natural habitats.

Event: Exploring Doughnut Economics 

Steve Tompkins and Beatie Blakemore recently attended a workshop at Hawkwood College led by Kate Raworth and Juliet Davenport, looking at how businesses can meet the needs of people within the means of the planet. The workshop explored the principles of ‘Doughnut Economics’ – a concept developed by Kate Raworth that has been widely influential amongst sustainable development thinkers, progressive businesses and political activists. Juliet Davenport is founder and CEO of renewable energy supplier Good Energy.

Project: Offsite construction for Osco Homes 

Transportation associated with construction site activities, material delivery and waste removal account to just under 40% of total energy use within the construction industry. At Baycliff Road our houses are constructed off site as separate wall, floor and roof cassettes and then assembled on site in typically around 12 hours per house. The construction period on site is much shorter than a traditionally built project and relies on considerably fewer deliveries to site and vehicle movements.

Studio: HT appoints Head of Sustainability & Regenerative Design 

Diana Dina has recently joined Haworth Tompkins to help develop and lead the practice’s sustainability and regenerative design strategy, balancing practical in-house support/training, external advocacy and independent research. Diana will work closely with the Directors, the Associates and the HT Sustainability Team to focus on progressing a vision and strategy for sustainable and regenerative design and practice including the education of staff, developing and reporting on sustainability metrics, maintaining sustainability resources, and greening the practice operations.