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Dursley Treehouse

Location: Dursley, Gloucestershire
Completion Status: Certified Occupancy: Occupied
Architect: M+H Workshop Consultant: Greengauge
Contractor: Selfbuild Client: Private
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Built on a small plot in the centre of Dursley, Gloucestershire, this certified Passivhaus was designed to have minimal impact on the surrounding trees and to preserve the natural habitat of the site.

Featured on Grand Designs in September 2016, the Treehouse garnered much interest for its beautiful cantilevered structure, its low environmental impact and for the romanticism of living in a ‘treehouse’.

The design plays with the cantilevering of boxes that are elevated and offset between the protected trees on the site. The house also boasts a lightweight veranda that circulates around the home and projects into the tree canopy: an unusual treehouse escape hidden in the middle of a bustling town. This complex building does not follow standard building practices and has metal piles (avoiding tree roots) instead of concrete foundations. This meant that engineers had to think innovatively to solve the unusual implications produced by this design.

The clients were keen to achieve Passivhaus standard. PHT member, Greenguage, worked closely with them providing guidance on energy efficiency and fabric design and were able to deliver a Passivahus certified building. They worked meticulously to maximize the efficiency of this unusual design; They wrote the initial Thermal Analysis report, advised on thermal bridging/ insulation detailing, provided the MVHR design, and under took airtightness testing. Greenguage produced ongoing Passivhaus design calculations.

This challenging build was completed to a very tight budget but, to quote Kevin McCloud, it is, “flipping brilliant”.

It was a great project to be involved in. Attaining Passivhaus certification was an achievement in itself, but for the design of the house within that to be recognised is brilliant. Passivhaus is an engineering standard and the fact that is so rigorously audited is its great strength. What is wonderful about the tree house is that it demonstrates what’s possible when adopting a broader, more balanced approach.

Tomas Millar, co-director of Millar and Howard Workshop.

Dursley Treehouse

 

Further Information

Dursley Treehouse

Passivhaus winners at Homebuilding and Renovating Awards

Is it a Passivehouse or is it a treehouse? Yes!, treehugger, December 2017

Dursley Treehouse
Dursley Treehouse
Dursley Treehouse
Dursley Treehouse
Dursley Treehouse
Dursley Treehouse

Dursley Treehouse
Dursley Treehouse
Dursley Treehouse
Dursley Treehouse