Working from studios in London and Wells in Somerset, Prewett Bizley Architects produce inspiring, energy-efficient buildings with a sensitive approach to context. Through a creative dialogue with our clients we seek to create engaging, atmospheric spaces that are a pleasure to use, responsive to needs of their users and that bring lasting improvements to the quality of people’s lives.

We give practical and useful advice that enables our clients to understand the design process and make informed decisions. We are committed to achieving best value for our clients according to their particular needs. We try to observe the nature of places to understand their qualities, patterns and nuances in order to propose interventions that might heal or provide continuity with the existing context.

Having pioneered some of the most extreme low-energy retrofit projects to date in the UK we are passionate about the need to reduce the impact of buildings on the environment. We are part of the 15:40 Collective of architecture practices that share a commitment to radically reducing the energy consumption of buildings through a 'fabric first' approach, with extensive experience in delivering sustainable new-build and retrofit projects using Passivhaus construction methodologies. We offer consultancy services to building owners and other professionals on low-energy construction and Passivhaus design. We have a hands-on approach through which we continuously seek to improve the quality of construction on site.

Our architectural work is rooted in the wider activities of teaching, writing and research which allow us to combine thought and technical innovation with a practical approach to the realities of development and construction. Current research focuses on rural architecture, self-build housing and how the principles of low-energy construction can be applied to retrofit of listed buildings. Please see our Journal for more information.  Our work has been recognised by a number of awards, most recently the Dundon Passivhaus in Somerset which won RIBA Regional and National Awards and was a finalist for the prestigious Stephen Lawrence Prize. We are winners of the Sustainability Architect of the Year Award 2017.

We work closely with Interior Designer Emily Bizley and can offer a fully integrated service incorporating architecture, interior design and energy analysis.  We work throughout the south of England with recent projects in Devon, Somerset, Dorset, Wiltshire, Oxfordshire, Berkshire, Surrey, Sussex, Kent and London.


How we work 

The posts below from Graham's Blog talk about the way we work and how we think about architecture.

Watch the video below to see a talk given by Graham Bizley in February 2017 at the University of the West of England (UWE) on the work of Prewett Bizley Architects:





Graham set up the Somerset office of Prewett Bizley Architects in 2013.  Following his move to Somerset Graham began researching the British landscape. He is particularly interested in what the landscape means to different people and how we can build in the countryside in a way that is sustainable and enhances a sense of place.  He submitted a proposal on rural architecture for the British Pavilion at the 2014 Venice Biennale and was one of 4 shortlisted teams.

Graham has written regularly for various architecture journals and is the author of two books on architectural detailing published by the Architectural Press. He is currently working on a book on Rural Architecture.  Graham lectures widely on the work of the practice at UK universities and is a part-time teaching fellow at the University of Bath.  Before moving to the west country he sat on the Hackney Design Review Panel and on the Islington Conservation and Design Panel.   

Graham studied at Bath University and the ESTAB in Barcelona. Prior to establishing Prewett Bizley Architects he worked for practices in the UK, India and Zimbabwe.


Robert heads the London office of Prewett Bizley Architects and has developed considerable expertise in low-carbon construction, particularly in the field of retrofit. He is a certified Passivhaus designer and has presented a number of ground breaking retrofit projects at Passivhaus conferences, RIBA CPD events and the award winning Retrofit Coordinator course.

Robert is a member of the RIBA Sustainable Futures Group which advises the profession and government on the incorporation of sustainability in education, standards and policy. He is a founder member of the Passivhaus Trust and a technical advisor to the STBa (Sustainable Traditional Buildings Alliance). He has previously been a trustee of the charity RESET that aimed to deliver training and knowledge sharing to increase resilience within our built environment, particularly in areas facing severe climate change impacts.

From 2007-11 Robert was Course Coordinator for Construction and ran a Diploma level design studio at the University of Greenwich. He studied at Bath University and the Technische Universiteit in Delft. Before setting up practice with Graham Bizley he worked in the UK, Belgium and the Netherlands.  At Feilden Clegg Bradley, Robert was responsible for design and implementation of a 110 bedroom student hall of residence for Queen Mary’s University that won a Housing Design Award in 2005.




BD Sustainability Architect of the Year Award 2017 - Winner

Competition to curate the British Pavilion at the 2014 Venice Biennale - Finalist

BRE Passivhaus Competition 2012 - Runner up

Builder & Engineer Awards 2010, Architectural practice of the year - Winner

Young Architect of the Year (YAYA) 2009 - Finalist


AJ Retrofit Awards 2016, Listed building under £5 Million - Shortlisted


RIBA Stephen Lawrence Prize (for best building under £1M) 2015 - Finalist

RIBA National Award 2015 – Winner

RIBA Regional Award 2015 (Southwest) – Winner

Daily Telegraph Homebuilding & Renovating Awards 2015, Best Eco House – Winner

Wood Awards 2015, Private – Runner up

Passivhaus Awards 2015 - Runner up

Structural Timber Awards 2015, Best private housing project – Highly Commended

Kentish Town House

Don't Move, Improve Exhibition - 2017


AJ Retrofit Awards 2016, Product Inovation award - Shortlisted


Retrofit Awards 2012, Housing (small) - Shortlisted (Highly Commended)


Retrofit Awards 2010, Domestic building (single house) - Shortlisted

Hackney Design Awards 2010 - Shortlisted

Sustainability Awards 2009, Sustainable project of the year (under £2m) - Shortlisted


Builder & Engineer Awards 2009, Turning to timber award - Winner

Civic Trust Awards 2009 - Shortlisted

Wood Awards 2009, Commercial and public access - Runner-up

Wood Awards 2009, Best use of panel products - Runner-up

Sky Edge housing, Sheffield

Europan 9, 2008 - Winner


RIBA Awards 2005 - Shortlisted

Brick Awards 2004, Best single house - Runner-up



New Architects 3 - Britain's Best Emerging Architects, The Architecture Foundation & Merrell, 2016

Building Design – 9 October 2009, YAYA 2009 Shortlist Announced

The Independent - 31 December 2005, Jay Merrick, 'The Faces to Watch in 2006'

Blueprint - December 2005, p50-51, Peter Kelly, 'Portfolio' feature


Country Living Modern Rustic - Issue 11 p26-37, 2018, 'Points of View'

Red Magazine - July 2018, p106-111, Ben Kendrick, 'Against the Grain'

The Modern Timber House in the UK - 2017, Wood For Good, Peter Wilson (download via this link)

Evening Standard, Homes & Property, Living the Country Dream - 25 September 2017, Philippa Stockley

House & Garden - September 2017, p74-81, Christopher Stocks, 'Passive Principles in Action'

Somerset Life - April 2017, p49-53, Victoria Jenkins. 'Minimalism at Its Best'

Homebuilding and Renovating - January 2016, p91, Michael Holmes, ‘A Triumph in Timber’

DETAIL Green - January 2016, p10-11, Feargal Doyle et al., ‘House in Dundon’

Passivhaus+ - Issue 14, 2016, Ben Adam-Smith

Grand Designs - House of the Year, Channel 4, 4 November 2015

The Daily Mail - Kevin McCloud reveals Britain's best new homes, 4 November 2015

The Daily Telegraph - 29th October 2015, Kevin McCloud - Britain's Best Houses of 2015, Harry Wallop

The Daily Telegraph - 5th September 2015, p3, Jason Orme, ‘Award-winning homes that are built by you’

The FT - 23 July 2015, Britain's Best Designed Home?, Paul Miles

The Sunday Times - 21st June 2015, p22, ‘Architecture: Dundon Passivhaus, Somerset, Prewett Bizley Architects‘

RIBA Journal, 1 May 2015

The Architects’ Journal - 24 April 2015, p30-33, ‘Case Study: Dundon Passivhaus‘

Architecture Today, ‘Dundon Passivhaus’, Inhabit - Architecture Today - February 2015, p2-5

Bloomsbury Town HOUSE

Passivhaus+ - Issue 20, 2017, Kate de Selincourt - Historic London House Gets Near Passive Transformation

Evening Standard, Homes & Property - How to Fit a Passivhaus into a Period Home - 7 December 2016

The Architects' Journal - 16 September 2016, Yogini Patel

Kentish town HOUSE

Grand Designs Magazine, November 2018, p129-130, ‘Come in From the Cold’

Holland Park Mews House

Evening Standard, Homes & Property - 21 September 2016, Phillipa Stockley


The Metro Property, 28 February 2017, p6-7, Jo Knowsley

Grand Designs Magazine, September 2014, p88-94, Sophie Vening


Residential Retrofit: Twenty Case Studies, RIBA Publishing, 2013, Marion Baeli

Architecture Today – May 2011, EcoTech p16-18, Paul Ruyssevelt – Future Proofing: Upgrading the UK Housing Stock

Building, 4 June 2010, p44-45, Stephen Kennett, ‘Passivhaus Diary’

Building, Robert Prewett, ‘Passivhaus Diary’, 6 August 2010, p42-43, 3 September 2010, p44-45, 8 October 2010, p68-69


Renovations: An Inspirational Design Primer, RIBA Publishing, 2016, Richard Wilcox

Residential Retrofit: Twenty Case Studies, RIBA Publishing, 2013, Marion Baeli

Evening Standard, 26 January 2011, Homes & Property p18-19, Barbara Chandler, ‘Our eco Home’

Grand Designs Magazine, October 2010, p76-84, Katy Dunn, ‘Pioneering Spirit’

The Victorian – March 2010, p8-9, ‘89 Culford Road’

Architecture In Detail vol II, Architectural Press, 2010, Graham Bizley

Building – 22 January 2010, p44-48, Thomas Lane, ‘A Haus in Hackney’

Delta T – December 2009, p8-12, James Parker, ‘Just How Low Can We Go?’

Radio 4, 17 December 2009, Simon Schama, You & Yours, 


RIBA Journal – August 2008, p40-42,Naomi Stungo, ‘Bottom, thou art translated’

Architecture In Detail vol II, Architectural Press, 2010, Graham Bizley


Home – Investing In Design by David Littlefield, Wiley, 2008

Homes & Gardens, April 2010, p153, Katarina Burrows, ‘Inside Out’

Evening Standard, Homes & Property - 18 March 2009, p7, Zoë Blackler, ‘Anything Goes’


FX Magazine - June 2008, p30

Building Design - 9 May 2008, p3


Evening Standard - 11 September 2013, p36-37, Kieran Long, ‘A Home to DIY For’

The New Modern House: Redefining Functionalism, Lawrence King, 2010, Jonathan Bell and Ellie Stathaki

The Independent – 15 October 2010, Living p52-53, Oliver Bennett, ‘Its Time to Start Thinking Big’

New York Times – 7 October 2010, pD08, Rocky Casale, ‘A Big Idea Fit for a Tiny Lot’

100 Houses:  Modern Designs for Contemporary Living, Merrell, 2009, Cathy Strongman

Basics - Interior Architecture: Drawing Out the Interior, AVA Publishing, 2009, Ro Spankie

Architektur + Wettbewerbe – September 2008 p60-63, Arne Barth, ‘Residential House with Office in London’

Daily Telegraph magazine - 28 July 2007 p64-67, Abigail Edwards, 'All Rooms with a View'

New London Architecture II, Merrell, 2007, Kenneth Powell & Cathy Strongman

Architecture In Detail, Architectural Press, 2007, Graham Bizley

Grand Designs Magazine - October 2006, p139-141, Fiona Sibley, 'Libraries'

Icon - August 2006, p21, Marcus Fairs, 'I Visited This House'

Evening Standard - 19 July 2006, Homes & Property p22, Fay Sweet, 'A Very Clever Plot'

Baumeister (Germany) - B4, April 2006, p54-59, Anne Hultzsch, 'Fenster zur Stadt'

Constuire In Laterizio (Italy) - 110, March/April 2006, p70-73, Andrea Campioli, 'Tutto a vista'

Architectural Review - March 2006, p37, 50-51, Rob Gregory, 'The House: New Paradigms'

Pen Magazine (Japan) - March 2006, Noriko Takiguchi, 'Architects Own Houses'

Grand Designs Magazine - February 2006, p53, 60-68, Cathy Strongman, 'Neighbourhood Watch'

RIBA Journal - January 2006, p48-52, Jan Carlos Kucharek, 'No Place Like Home'