Passivhaus Affiliate

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.

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Accredited Passivhaus Design

Buckhurst Hill, Essex

Thinking of a new Passivhaus or EnerPHit retrofit? Accredited Passivhaus Design are enthusiastic about creating attractive buildings that are space efficient, comfortable to be in, contribute to their surroundings and use little energy. We use the Passivhaus method as it is proven in design and on site. Our Certified Passivhaus Designer has over 25 years' experience of creating housing for individuals, social landlords and care providers, from masterplanning to detail design. We can work with other architects and can provide construction stage energy calculations and working drawings for contractors. We can take you through the design, planning and construction stages of creating something seemingly impossible - Really comfortable, attractive buildings that cost very little to run. Our website can tell you more. Accredited Passivhaus Design is a trading division of the Tooley & Foster Partnership.



Hereford, London, Edinburgh

Architype is an architectural design practice with a passion for creating uplifting, genuinely sustainable architecture using environmentally conscious materials to deliver healthy buildings for people to work, live and enjoy. Sustainability is at the heart of Architypes culture, inspiring and informing everything they do. Operating from two busy offices in Hereford and London, their work is primarily in the social sector, encompassing education, community, culture, housing and health.




ATTMA, the Air Tightness Testing and Measurement Association are best known for running Competent Person Schemes across the UK, Spain, Australia and Dubai. The ATTMA provides assurance of quality by requiring members to be trained, insured and audited on a regular basis. The ATTMA also provides guidance to key industry stakeholders around the world and holds the largest database of test results and data in the world, collecting information from approximately 14,000 tests each month. ATTMA are pleased to offer training and quality assurance for testing to Passivhaus standards.


Ecology Building Society


Ecology Building Society provides ethical savings accounts and green mortgages for properties that benefit the environment. The prime focus of the Society is to promote an ecological approach to the built environment in the UK, and thereby foster sustainable communities. We seek to minimise energy use and waste in both our office and business practices. Our mortgage product range includes: C-Change Discounts for residential borrowers, which offer a 1.25% discount off our Standard Variable Rate for Passivhaus certified homes for the lifetime of the mortgage. Small Scale Development Loans and Commercial Mortgages for developers of Passivhaus standard properties.


Exeter City Council


Exeter City Council has championed the Passivhaus standard over the last 10 years delivering over 100 Passivhaus affordable homes across the city to date. The City Council is currently constructing the UK’s first certified leisure centre and Extra Care Home village with completion scheduled later in 2020. The City Council also has its own private development company, Exeter City Living Ltd which has a pipeline of Passivhaus developments many of which are open market homes. Exeter City Living’s approach to development encompasses a triple-bottom line business principle, ensuring all new developments are Passivhaus, healthy, climate resilient to 2080 and offer value for money. The Council has accumulated substantial knowledge and experience of Passivhaus over the last decade and has a dedicated team of Officers and consultants who can be utilized on a consultancy basis to assist other Local Authorities or private entities with their Passivhaus ambitions


Green Building Store


Green Building Store offers products and support for Passivhaus and low energy homes and buildings, including triple glazed timber windows and doors and advanced MVHR heat recovery ventilation, specialist airtightness & insulation products and consultancy and building services. With 25+ years’ experience of working on low energy homes and buildings, Green Building Store combines technical expertise with outstanding personal service and aftercare. Green Building Store’s construction division built the award-winning Denby Dale Passivhaus, Golcar Passivhaus and Stirley Farm EnerPHit projects, as well as numerous radical retrofits designed using the Passivhaus Planning Package. Details of these projects are outlined in various free resources available from Green Building Store’s website, including technical briefings, blogs and films.


Hastoe Housing Association

Hampton Wick, Surrey

Hastoe is an independent registered housing association that owns and manages over 7,500 homes of mixed tenure, including affordable rent and shared ownership. As the UK’s leading rural housing provider, it supports communities in 70 local authority areas across the south of England; from Cornwall to Norfolk. Its roots are in innovation and this has led to specialisms in rural communities and in climate protection. By 2019, Hastoe had delivered 12 Passivhaus schemes including the UK’s first rural affordable Passivhaus scheme at Wimbish in Essex. This scheme continues to provide useful insights into Passivhaus developments in the UK.


ICF Supplies Ltd


ICF supplies was founded in 2012 by our managing director, who at the time ran an architectural practice. He was so impressed by the Nudura system, along with the thermal performances achieved, that he became a distributor. Working out of our Basildon headquarters we have quickly grown to be the largest supplier of insulated concrete forms (ICF) in the country. Being inherently airtight, our system makes this aspect of the build much more straightforward to achieve and with the concrete core as the structural element, once achieved this will not be lost through building movement over time. We have a comprehensive range of PHPP Psi value certificates. The heart of the Nudura design is providing very thermally efficient housing by means of very effective insulation encapsulating the thermal mass. We not only supply Nudura ICF but crucially provide training and hands on practical assistance on site to ensure that our products are used correctly and appropriately throughout the process.


Jackon UK Ltd




UK Wide

Kier is a leading provider of construction and infrastructure services. Our purpose is to deliver economic and social infrastructure, which is vital to the growth of the UK. We provide specialist design and build capabilities and with the knowledge, skills and intellectual capital of our people ensure we are able to project manage and integrate all aspects of a project. With a network of offices across the UK, Kier offers national coverage, with local delivery to deliver economic and social infrastructure. Every project we work on draws on the skills and expertise of our people. Their job is to make a positive impact on the world. Because what we achieve together in a day will have benefits that last for generations. Utilising our specialist skills, extensive local supply chains and first-class project execution, we are well placed to deliver sustainable buildings for local communities. We have extensive experience in delivering Passivhaus schemes, including St Sidwells Point and St Loyes Extra Care Home in Exeter, Bicester Business Centre, Hereford Archive & Records Centre in Hertfordshire and South West Energy Centre in Paignton.


Kingspan Insulation Limited


Kingspan Insulation is a market leading manufacturer of optimum, premium and high performance rigid insulation products and insulated systems for building fabric and building services applications. Kingspan Insulation is one of the founding members of the Passivhaus Trust and is at the forefront of the low energy building drive, helping architects and developers get the most energy efficient building envelope performance whilst taking up minimal space. Its products are among the most thermally efficient and technically advanced insulation materials available and have many advantages over traditional insulation materials.


Knauf Insulation

St Helens

Knauf Insulation is the leading provider in the UK of high performance, non-combustible, sustainable Glass and Rock Mineral Wool insulation solutions. With more than 40 years of experience in the insulation industry, it is one of the fastest growing and most respected names in insulation worldwide. Manufactured using up to 80% recycled content, Knauf Insulation mineral wool solutions offer four key benefits to building occupiers. As well as thermal performance, they are non-combustible for fire safety, provide sound absorption and noise reduction for superior acoustic performance, and contribute to higher indoor air quality thanks to the Knauf Insulation revolutionary ECOSE Technology bio-based binder.


Munster Joinery UK


Munster Joinery is amongst the largest manufacturers of energy efficient windows and doors in Europe. Founded in 1973, the company has grown year on year with the continuous development of new products, materials and processes. The company has a 940,000sq ft. production facility in Ireland and another 230,000sq Warwickshire in the UK. In recent years Munster Joinery has focused on developing energy efficient products through green and sustainable processes and operations. All of the products are designed for optimal thermal performance with U-values as low as 0.47 W/m²K. Several window systems, all of which are designed, developed and manufactured in house are now Passive House certified. Property owners are assured of an energy efficient product from an environmentally aware source together with an efficient service when they purchase Munster Joinery products.


Saint-Gobain UK & Ireland

Loughborough, Leicestershire.

Our mission is to create great places and improve daily lives. As a business, Saint-Gobain designs, manufactures and distributes materials and solutions, which are key ingredients in the wellbeing of each of us and the future of all. They can be found everywhere in our living places and our daily life: in buildings, transportation, infrastructure and in many industrial applications. They provide comfort, performance and safety while addressing the challenges of sustainable construction, resource efficiency and climate change.


Stewart & Shields Ltd


Stewart & Shields Ltd are proud Patrons of the Passivhaus Trust and are proactively bringing the Passivhaus Standard into the reach of Councils and Housing Associations throughout Scotland. As well as building for private owners we have, with the help of our design partners, developed a method of bringing Passivhaus Buildings within the financial parameters required for multi-unit Social Housing. This addresses important Scottish issues such as Fuel and Child Poverty whilst at the same time addressing worldwide issues by reducing the Carbon Footprint. Stewart & Shields have been creating innovative buildings for five decades and are now dedicated to delivering the Passivhaus Standard.


Warm: Low Energy Building Practice


Warm is an independent consultancy with the theoretical and practical understanding to bring pioneering low energy buildings from design to reality. WARM was set up in 2009 by father and daughter, Peter Warm and Sally Godber, with the aim of creating buildings with real energy savings. All our full-time staff are Certified Passivhaus Designers and our group includes chartered engineers & architectural technologists. Whilst there are only 8 of us our reach is significant in the Passivhaus World: WARM are the most prolific Passivhaus consultants and Certifiers in the UK, and winners of the 2019 CIBSE Award for Building Consultancy up to 100 employees as well as Passivhaus Designers of the UK’s best new building, winner of the RIBA Stirling prize 2019. Most Passivhaus projects in the UK have been either one-off self builds or low-rise estates for social housing, but we have been involved in nearly every Passivhaus school in the UK and the largest Passivhaus building. We also provide building services design, training, monitoring and anything else for low energy buildings that will improve the built environment. We strongly believe in disseminating information and manage the very successful Carbonlite training programme for designers and contractors as well as bespoke courses for clients.


Willmott Dixon


Willmott Dixon Group, founded in 1852, is the UK’s third largest privately-owned capital works, regeneration and support services company. The company’s family values and respect for people has seen the business achieve numerous accolades as one of the best places to work in construction. Willmott Dixon for the past three years has been the highest placed major contractor in the prestigious Sunday Times Best Companies to Work For list. Willmott Dixon’s internal sustainability consultancy, Re-Thinking, has a number of staff trained and qualified as Certified Passivhaus Designers and is actively promoting use of the approach across its three divisions.