Sustainable energy services for the built environment

We are an independent, Passivhaus-accredited sustainable energy consultancy, providing services across the UK and abroad for new and existing buildings. We are acknowledged experts in existing building retrofit, and have a particular expertise in the sustainable, low-energy refurbishment of traditional and historic buildings.

We work on projects at all scales, providing services to a range of public and private clients including architects, developers, local authorities, housing associations, national & international conservation agencies, academic institutions and private clients.

Our professional links with leading research bodies and practitioners ensure that our services incorporate the latest best-practice technical and strategic approaches to achieve truly sustainable buildings.


Recent projects

Barn conversion, Yorkshire

Detailed energy strategy, WUFI hygrothermal analysis & building fabric testing for farmhouse renovation & barn conversion in the Nidderdale AONB


Millhanger Farm, Surrey

Design guidance and Energy & Sustainability Statement for a Paragraph 55 development on brownfield land in an Area of Special Landscape Value, working with Yiangou Architects


Woolwich Arsenal, London

Design advice & hygrothermal assessment for the redevelopment of Grade II listed military arsenal buildings, working with Greengauge Building Energy Consultants


Bristol SWI Retrofit Guide

Development of comprehensive best-practice retrofit guidance on behalf of Bristol City Council, in partnership with the STBAFourwalls and Prewett Bizley Architects