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Welcome to our new members!

DJ Reynolds Ltd, Inspired Builds, Lex Blinds, Brian M, Ellie P, Bart S, Claudia-Maria B, Tahir A, Andre C, Sam T

Patron Member

Patron Members

Our Patron members, including companies and organisations who are leading the delivery of Passivhaus in the UK, make an essential contribution to the Trust’s work, support us in lobbying for policy changes, and inform the direction of campaigns and research at our annual Technical Panel.

Want to add your listing?

Join the Passivhaus Trust

Join a growing Passivhaus community, get discounts on training & events, and get International Passive House Association (iPHA) member benefits too.

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Login to your account to add or edit a listing, or claim an existing listing. If you need help, email

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@rchitects Scotland Ltd

Angus
Patron
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21°

Huddersfield
At 21°, we believe you thrive in the places where you experience comfort. Delivering a low energy or Passivhaus building is complex, and you need a solution rather than a single product. At 21°, we are committed to using a whole house approach to provide better performing buildings from a View listing →
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4Site Engineering & Construction Ltd

Milnthorpe
Building Contractor specialising in new build low energy buildings and Passivhaus, as well as low energy retrofit and EnerPHit projects. Passive House Institute approved tradesperson. View listing →
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A D Practice

Wheathampstead
Founded in 1992, A D Practice Ltd is a small, well-established and multidisciplinary RIBA Chartered architectural practice located in The Mill, Wheathampstead, St Albans, Hertfordshire. We aim to work with clients and value our ability to listen and learn from them in order to create better spaces that both work View listing →
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A-Tec Design

Newquay
A-Tec Design have been a member of the ‘Chartered Institute of Architectural Technologists’ since 1996, providing a professional architectural design service throughout Cornwall and England. Daren Thomas has been involved within the construction industry for over 40 years, working on a wide range of projects as a setting out engineer, View listing →
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A-Zero Architects

London
A-Zero Architects is a RIBA chartered practice based in London. Founded in 2010, its work focuses on designing and procuring buildings in a way that doesn’t harm the environment. Our projects range from residential and commercial to cultural. We works on new buildings, old buildings put to new uses, as View listing →
Patron
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A. Proctor Group

Blairgowrie
The A. Proctor Group’s range of construction membranes has been designed using years of research and development to provide comprehensive protection to the building envelope from both inside and outside of the structure, also addressing the requirements of heat, air, moisture management within the building element. Based on this research, View listing →
Other branch
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A21Architects Limited – Devon

Kingsbridge
A21Architects create distinctive buildings, ensuring integrity through attention to detail. Our approach interrogates both the physical and cultural context of each project. Our expertise lies in medical, hospital design and residential buildings. Our approach is characterized by modern design, exceptional architectural detailing, and beautiful finishes. We always strive to be ambitious View listing →
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A21Architects Ltd – London

London
A21Architects create distinctive buildings, ensuring integrity through attention to detail. Our approach interrogates both the physical and cultural context of each project. Our expertise lies in medical, hospital design and residential buildings. Our approach is characterized by modern design, exceptional architectural detailing, and beautiful finishes. We always strive to be ambitious View listing →
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Abdul Waheed

London
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ADAM Architecture

Winchester
ADAM Architecture is a leading UK practice specialising in classical and traditional architecture, and contextual urban design. The practice is run by Nigel Anderson, Hugh Petter, George Saumarez Smith, Robbie Kerr, Darren Price and Robert Cox, and has offices in Winchester and London with a team of around 90 staff. View listing →
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Adam Staniland

Dundee
Architect and Passivehaus Designer based in Broughty Ferry Dundee at Nicoll Russell Studios. View listing →
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AECOM LTD

London
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Aero Barrier UK

Swainshill
AeroBarrier UK is a company specializing in advanced air sealing solutions for buildings. Their mission is to maximize the energy efficiency of buildings by providing a plug-and-play air sealing system that eliminates leakage in four easy steps. Their innovative technology involves pressurizing a building and using a non-toxic mist to View listing →
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AES Sustainability Consultants

Tiverton
AES Sustainability Consultants Ltd is a leading sustainability consultancy operating across the UK. From land acquisition to post-construction, we provide expert guidance and technical support, from Part L compliance to PassivHaus and PHPP consultancy to meet exemplar standards. Our commitment to your project’s success means we never compromise on quality View listing →
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AHR

Manchester
We are architects and building consultants who believe places have the power to shape a more positive future. By embracing innovation, and with expertise grounded in two centuries of practice, we deliver healthier, safer, and smarter buildings and spaces. We are committed to promoting sustainability throughout our projects and working View listing →
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AHR – Birmingham

Birmingham
Other branch
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AHR – Bristol

Bristol
Other branch
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AHR – Cardiff

Cardiff
Other branch
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AHR – Glasgow

Glasgow
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