Passivhaus Affiliate

Standard Members

Advanced Housing Systems

Gerrards Cross

Our services are broad and detailed - we will help with any aspect of your build, from finding the best architect that suits you, to our TotalBuild and ManagedBuild services that insulates you from the difficult and time-consuming aspects of building so you can concentrate on the design elements that make it your own. For a more detailed look, go to SERVICES. Our products marry advanced technologies in areas such as thermal and acoustic insulation while using traditional wood based materials which are high performance and carbon zero or better.


Airflow Developments Ltd

High Wycombe

Airflow Developments Ltd have been producing ventilation solutions for sixty years and provide the widest range (8 models) of Passive House Institute approved Mechanical Ventilation with Heat Recovery (MVHR) units for both residential and Commercial buildings in the UK. Our team of experienced system designers will take your plans and guide you through from specification to installation ensuring you create a healthy, low cost heating dwelling. Operated by a choice of ‘On-Demand’ control options our range of reliable, quality products coupled with the innovative and compact ‘Zero Leakage’ radial ductwork system help deliver a comfortable, low energy environment for both building occupants and owners alike.


AIS Chartered Building Surveyors


AIS is an independent building surveying consultancy. The practice was set up in 1994 and has been providing a range of services to commercial, the third sector and private clients.

Alan Clarke


Alan Clarke is an energy consultant and building services engineer specialising in low energy and passivhaus buildings.

Alchemilla Architects Ltd


Alchemilla Architects Ltd is a RIBA Chartered Practice based in rural Somerset in the Blackdown Hills. Our work ranges from single houses and small housing estates to extensions and refurbishment projects. A development of high end holiday lets, a conversion of a listed building to offices and a swimming pool are part of our current workload. We see architecture as integral to the built environment, and pride ourselves in providing a full service from inception to completion. Part of this is a strong commitment to energy efficient buildings with our principal architect being a certified Passivhaus Designer.



Milton Keynes

Altechnica is a Zero Carbon / Super-Passive Solar Architecture, Technology Innovation and Renewable Energy Consulting practice established by Dr Derek Taylor in 1990 to carry out commissions, research and projects. Altechnica reviewed renewable energy potential in Uttlesford, Merton BC and in Kent. They are currently the architect/renewable energy consultant for a Super Passive Solar™ Zero Carbon House in West of England, which combines zero carbon design with innovative technologies to achieve one of the most energy efficient houses in the UK, designed to achieve PassiveHaus standards. Altechnica is developing a family of innovative Altechnica Zero Emissions Dwellings™ intended to result in zero emissions of CO2 and to obtain practically all of its energy requirements from building-integrated renewable energy and require no space heating.


Anglia Air Testing


Anglia Air Testing was set up in 2006 to provide air leakage testing for compliance with UK Building Regs part L. Since then we have added ventilation testing for part F and MHVR commissioning to our services. As a very experienced air leakage tester we have been referred by a number of Passivhaus assessors to carry out tests on their behalf and provide results and reports. We are registered members of the ATTMA Scheme (Air Tightness Testing & Measurement Association). Our tests are carried out in accordance with ATTMA (Air Tightness Testing and Measure Association) TS L1 standards and use Retrotec equipment calibrated to UKAS standard annually. We cover all of East Anglia and the South East.

Anne Thorne Architects Partnership


The 15-40 collective of architecture practices share a commitment to radically reduce the energy consumption of buildings through a ‘fabric first’ approach. Anne Thorne Architects, Arboeal Architecture, CTT & Passivhaus Homes, Good Architecture, Prewett Bizley Architecture and Suetake Studio, who form 15-40, include 7 Certified Passivhaus Designers, and have extensive experience in delivering well designed sustainable new build and retrofit projects. By co-operating to share ideas, knowledge and resources 15:40 is able to offer clients a greater depth of expertise.


Arboreal Architecture


Architectural Design Ltd




Your home extension, new build or commercial assignment is one of the most important projects you will ever undertake. It takes careful understanding, passionate commitment and sheer quality of design to deliver your vision - and future proof your plans. ArchitectureLIVE offers outstanding expertise and our innovative and cost-effective designs have brought delight to clients in Surrey, Hampshire, West Sussex and beyond. We champion cutting edge technology and sustainable design to deliver energy efficient homes which are pleasant to live and work in, with constant room temperatures and ample daylight. Such buildings ultimately help insulate our clients from the ever-rising cost of energy and relieve the impact on the environment.


Associated Architects LLP


Associated Architects was formed in 1968 and aims to create architecture of the highest quality which embodies a deep sense of responsibility towards our clients, the users of their buildings and the environment. Based in Birmingham, we have designed buildings in the UK and elsewhere, across the private and public sectors. These include schools, universities, offices, housing and urban regeneration schemes. Underpinning the continuing success of the practice is our ongoing commitment to the delivery of a highly professional service, and sustainability in the widest sense. The number of awards received by the practice recognises the consistently high quality of our design.


Austin Design Works Ltd


We offer Architecture and Landscape Architecture services undertaking a very wide range of projects, varying in scale and complexity. These include the design of bespoke new build houses or remodelling and extending existing homes. We also design buildings for commercial, educational and leisure use. Low energy design is of great importance to us and we use our expertise to create buildings that require minimal energy to run whilst also creating healthy and comfortable internal environments. We are advocates of the PassivHaus design approach and have the inhouse expertise to design to this standard. We relish working throughout all project stages and value a collaborative and informed design process. Our projects arise from a good understanding of the context and spirit of your site and requirements. We treat each project individually, to deliver high quality buildings and landscapes which offer value, functionality and delight.


Austin-Smith:Lord llp


Austin-Smith:Lord has been delivering the highest degree of creative and practical thought in architecture since 1949. Our celebrated history has given rise to many buildings of national importance, and over 150 awards and commendations for outstanding architectural and environmental design.


Axis Energy