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About Us

With 30 years' experience of creating low energy buildings and 9 years Passivhaus experience, we produce buildings that are both energy efficient and comfortable, while providing a real contribution to the lives of local people and their surroundings.


Accredited Passivhaus Design is a division of Tooley Foster; an award winning architect creating inspirational communities for over 125 years.​​​ Reducing carbon emissions is fundamental to our approach, and our success is based on a sustained commitment to design, innovation and technology in this area.​ 

Peter Ranken

MSc, RIBA and CEPH (Certified European Passivhaus Designer)

Peter Ranken,Passivhaus Designer,Passivhaus Design,Passive House Designer,Passive House Design,Passive House Architect,Passivhaus Architect
Certified Passivhaus Designer

Our lead Certified Passivhaus Designer is Architect Peter Ranken who has over 30 years’ experience of designing housing, care and health buildings and also holds an MSc in Environmental Design and Engineering from UCL. ​He qualified as a Passivhaus Designer in 2012, and this accreditation was renewed based on completed projects in 2018. 

He has also provided Passivhaus Designer advice for other Passivhaus projects within Tooley Foster including three buildings in Oxfordshire, a community centre in Chigwell and a 60 bed care home in Kent. Peter has worked with a number of other architects to make their own homes certified to the Passivhaus Classic standard, including a Passivhaus Trust award winner in 2016. He is currently working on two Passivhaus social housing projects with 50 flats in Newham. He was the architect and Passivhaus Designer for the first NHS building, the Foleshill Health Centre in Coventry.

He is an associate lecturer at Anglia Ruskin University, where he contributes Passivhaus thinking to modules on environmental building performance. He has also provided CPD training for local RICS surveyors, and has presented APD projects at Passivhaus Trust conferences.

Connor Candall

CEPH (Certified European Passivhaus Designer)

Certified Passivhaus Designer

Connor Randall is a latest member of our staff who has qualified to be a Passivhaus Designer, He passed the exam in 2021.

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