Passivhaus Affiliate

Standard Members

R-gen Developments Ltd



RDA Architects


RDA is an internationally experienced architectural practice set within the heart of South East London with a very simple philosophy, “we regard each and every piece of work as is if we were the client and the building belonged to us”. Our knowledge and experience ensures that we can comfortably handle a very broad range of projects from large commercial developments to beautifully crafted domestic buildings and sensitive unique renovation work.


Rees Pryer Architects LLP

Bury St Edmunds

Rees Pryer Architects are an award winning chartered practice based in Bury St Edmunds. Our projects range from individual domestic schemes to complex multi-disciplined projects. We pride ourselves on providing well-considered and innovative design solutions that meet both Clients’ needs and reflect the character of the area in which we live and work. We believe that the design solutions and integrated systems that are most successful in their implementation are those that are mostly passive, and in essence, simple in their application. By working closely together these principles can be developed to ensure the Client realises a thoroughly successful long term solution.




Founded in Germany in 1948, REHAU is now one of the world’s leading polymer producers – developing innovative, efficient and high quality solutions in polymer which meet the demands of both the construction and industrial markets. The company’s reputation has been built on delivering products and systems which exploit the inherent benefits of polymer and offer environmentally efficient, high performing alternatives to traditional materials. A global company, established in 170 locations and with more than 19000 employees worldwide, REHAU has huge resources invested in product development and application. In the UK, it has a large headquarters in Ross on Wye with dedicated technical and product development teams, two large scale polymer extrusion plants in North Wales and a network of regional sales offices and commercial specialists providing advice and support to developers, specifiers, and contractors. The company’s product range includes market leading Passivhaus window, door and curtain walling systems, developed in both PVC-U and composites. Hugely versatile and capable of producing frames in a wide variety of shapes, styles and colours, REHAU is a popular choice across the retail, trade and commercial sectors. Alongside window systems, REHAU also manufactures other products for the construction market including renewable energy solutions, cable management systems and highly specialised pipework and fittings for plumbing and underfloor heating, district heating and ground source energy applications.


Richard Maxton Architecture


Richard Maxton has been designing homes, house extensions and award winning commercial developments for nearly thirty years. During this period Richard has worked all over Scotland and has an enviable reputation for securing Planning Consents for difficult sites. As a Certified PassivHaus Designer Richard has the skills to design low energy homes to the PassivHaus Standard. A Chartered Technologist, Richard takes great care to accurately establish a definitive Client Brief at the outset to ensure the Client ‘dream’ is realised. Richard provides a single point of contact service and works with a network of professionals to deliver projects on-time and on-budget.


Rock House


Having studied at Leicester School of Architecture from the mid 1970s, Doug joined tp bennett as an architect in 1984 a Partner years later in 1987. Doug moved the practice from Holborn to their present offices in One America Street on the Southbank in 1998. He was Managing Partner for 10 years between 1999 and 2009 and led the conversion of the practice to a Limited Liability Partnership in 2005. With Richard Beastall, Doug co-founded and established the interiors division of the practice in 1997. Doug is committed to contemporary architectural design and has extensive experience in the Commercial, Residential and hospital sectors. He has a keen interest in practical, pragmatic and cost effective sustainable design having founded the sustainability unit at tp bennett in the late 1990s.



Writer/journalist specialising in low energy housing.