Passivhaus Affiliate

Standard Members

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.




Redsix are an independent sustainability and energy consultancy to the construction industry, helping our clients to achieve compliance targets as efficiently as possible. Our in-house Passivhaus, BREEAM and Energy (Part L & EPC) consultants will provide the highest level of quality and service, whilst maintaining a personal relationship with all our clients, making the process as simple and stress-free as possible.


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.


Rexstone Builders Ltd



Richard Haig



RJ Energy Consultants