Beattie Passive Project
email       01953 687332

St Neots, Cambridge

Project Outline

Client: Mr M Branch

Project description: two storey extension approx. 70m2 – Passivhaus certified; existing 1970s house to be retrofitted and upgraded with new insulation, windows and internal renovations.

The timber frame structure was built by carpentry students at Cambridge Regional College.

Client Verdict: "Having completed the Self-Build course at the Beattie Passive Training Academy, I was able to start work transforming my 1960s detached house into a stylish and contemporary home with all the benefits of Passivhaus living. The simplicity of the Beattie Passive Build System enabled the local College’s carpentry students to build the timber frame structure in just 4 days, and once on site, the testing and certification will all be taken care of by Beattie Passive, giving me peace of mind knowing my home will be built and finished in line with Passivhaus standards.”

St Neots, Cambridge

Groundworks are underway ready for the timber framed structure

Technical Specification:

Wall U value: 0.11 W/m2k

Roof U value: 0.11 W/m2k

Floor U value: 0.09 W/m2k

Air Tightness: Below 0.6 3/hm2@50pa


Link to project webcam

Watch a time lapse video of the timber frame structure build

» View the webcam

St Neots

Architect plans: ©TCS Architectural Design Ltd

St Neots


St Neots
St Neots

To find out more about the time, cost and environmental benefits of the Beattie Passive Build System, contact us via email, telephone 01953 687332 or visit



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AECBLABCPassivhaus TrustIPHA