Business Description

Established in 1999, Conker is a family run business specialising in green building and Passivhaus mainly covering Kent, Sussex and South London but also further afield, including new build, extensions, conversions and refurbishments. Experience in straw bale, timber frame, roundwood, rammed earth, rammed chalk, rainwater harvesting, solar, and historic building conservation. Domestic, commercial and education sectors.  Certified Passivhaus designers.

We can take a project from building survey (including air leakage testing and thermography) through to concept design, planning application, building regulations, tendering and contract administration. We have a local network of specialists to assist us in achieving consistently high standards.

6 The Stour Centre

United Kingdom
Greendale Studio

scope: Passivhaus consultant, building regulations application and detail design.

aims: New light industrial unit certified to Passivhaus standard

measures: Passivhaus Standard

The Greenhouse

scope: Sustainability consultant

aims: New low energy house to NPPF Para 55

measures: Built to Passivhaus principles using PHPP. RIBA House of the Year 2017


scope: Design and detailing

aims: New House in AONB

measures: Circular design with clerestory glazing and central courtyard to maximise daylight whilst minimising heatloss, due to very exposed site. Earth bermed walls reduce visual impact and heat loss. Sedum roof also shelters against wind chill. High thermal mass in floor slab and external walls.

Paul Mallion
Director, classic BMW boxer
Angela Mallion
Director, Royal Enfield
Gavril Postnikov
Surveyor, BSA Gold Star