• Technical expertise

    Holistic technical & design support for new-build and retrofit

  • Renewable energy

    Expert guidance on all small- to medium-scale renewable energy systems in existing buildings

  • Historic buildings

    Specialist support on all aspects of traditional and historic building retrofit

  • Research

    National and international research into all aspects of energy performance in buildings

  • BUILDING PHYSICS

    Energy and moisture modelling, analysis & compliance

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.

Our services include: energy & sustainability statements for planning; holistic retrofit strategies; energy modelling (PHPP; SAP; RdSAP; BREEAM Domestic Refurbishment); building physics analysis (U-value & Psi-value calculations; 2D thermal bridge analysis; WUFI hygrothermal analysis); design review & technical guidance; energy, CO2 and financial analysis; research; and teaching.

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

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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

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Woolwich Arsenal, London

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

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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

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