Passivhaus Affiliate

Standard Members

Membership of the Passivhaus Trust is open to anyone and does not necessarily imply achievement of the Passivhaus standard for buildings or components, or attainment of Passivhaus-related qualifications. Members of the Passivhaus Trust listed include architects, consultants, contractors, manufacturers and other industry professionals, as well as individuals, who support the work of the Trust in promoting the Standard in the UK.

View Patron members

View members by category

Search map

Water Lane Architects


Water Lane Architects is a small architectural practice with most clients being home owners, commercial or education bodies. Most of our projects are in East Anglia, with a project value between £50,000 and £3M. The practice was set up by Chris Exley in 2011 and aims to draw on his 30 years of interest in and experience of sustainable architectural development. Chris was formerly a BREEAM Assessor, Director responsible for sustainable development and ISO 9001 and 14001 at Charter Partnership and Archial. Water Lane Architects has recently submitted for Planning Permission for its first PH design plus butterfly reserve in Essex.


Will Rudd Davidson Ltd

Edinburgh and Glasgow

Will Rudd Davidson provides Civil, Structural and Conservation Engineering and Construction Consultant Services from Concept Design to Completion. We provide an exemplary service, and aim to exceed all expectations making the journey as seamless as possible. With main Offices in Edinburgh and Glasgow, we deliver Civil and Structural Engineering services across a wide spectrum of sectors throughout Scotland and across the UK. We are skilled at providing cost effective, practical and elegant solutions. We thrive on Problem Solving, providing robust solutions to challenging briefs. Whether in City Centre gap sites, Buildings at Risk, poor ground conditions or marginal plots of land, we will add value.


Williams Energy Design