Our philosophy . . .

We are passionate about delivering sustainable, quality housing at a fair cost. We all (animals, fish, plants & humans) can continue to co-habit on this planet only if we decide to apply our intelligence to solve the challenges of our time. The building industry (as many other industries) desperately needs broader drivers than simply serving the interests of shareholders. The Passivhaus standard, with its fabric first approach, offers a methodology to build new houses which require very low energy usage, we believe this is an essential step change. We must learn to live well without pouring out increasing amounts of carbon dioxide into the atmosphere. 

We have developed PH15 to meet the Passivhaus methodology, and also to reflect a firm belief in using natural, renewable materials where possible, materials that can then be recycled at end of life.

Everyone deserves a good home, especially at the affordable end of the housing spectrum. Homes should not be a luxury item, that’s why we are also interested in group housing, which helps to reduce costs, and supporting those who might need to invest using their own sweat equity. 

Our aspiration is to be disruptive innovators in business, to contribute to creating a new market and value network. Please join in. 



jonathan at work

Jonathan Williams BSc


After financing his way through university at UEA (more years ago than he cares to remember) by doing some casual building work Jonathan ended up doing this full time for the next 30 years as the managing partner of Williams & Partners, a building company which specialised in historic building conservation and the use of natural, renewable building materials.

“This approach to building conservation was born of the realisation that historic building fabric needs to breath to avoid many of the problems which have bedevilled our listed churches and houses. The same approach, allied with the use of high tech building membranes can be used to create highly energy efficient and healthy to live in, new buildings”.

jae not at work

Jae Cotterell, MSc, Dip Arch


Author and architect, with experience in designing certified Passivhaus buildings, Jae is motivated by working to produce quality, aesthetically pleasing buildings achieved through thoughtful design and teamwork with people who share common values and interests. Whilst being pragmatic about material choice she prefers natural, locally sourced products.

Appropriate use of energy is critical in today’s world and Jae believes the best way she can contribute as a Passivhaus architect is to ensure that the building’s fabric is insulated and detailed well and to ensure the whole team has a proper understanding of building physics.

Jae is the co-author of The Passivhaus Handbook

Phil Neve MSc, Dip Arch


Formerly a marine scientist, activist, cook and entrepreneur , Phil is an avowed generalist who loves to work across disciplines to create successful projects .  He has also had an interest in environmental and energy issues since the 1970’s and for the past 15 years has worked in domestic energy and natural building as an assessor, advisor and Passivhaus consultant. 

Phil believes that healthy low energy homes should be available to all people and regards Passivhaus performance and the use of natural materials as key to this objective.  He also sees co-housing and other social living models as important for  enabling us to lead healthier happier lives.

When not working Jonathan enjoys thinking about working.

When not in the office Jae enjoys taking the dog for a walk.  Hang on Jae . . .


When not working Phil does a whole lot of other things…including walking, cycling, veg growing, cooking, making and the occasional dangerous sport.

David at work

David Durant


A newcomer to Devon, David joined Passivhaus Homes earlier this year with no previous experience in the intricacies of Passivhaus. He was compelled to apply for the post because the organisation’s values match his own, and he has quickly embraced its principles and the wisdom of putting fabric first in the construction of energy efficient buildings.   A keen environmentalist, he is passionate about putting people and planet first and an avid supporter of using locally sourced materials and resources.

David manages the day to day complexities and querks of the on-line store.


When not working David is a radio broadcaster on Riviera FM, Torbay’s local community radio station.

two dogs

The Office dog's bodies

Without whom we would get more done . . . . .but less exercise.

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Passivhaus Trust Member
15 40 architecture collective
certified passivhaus consultant