ExplorePracticesRixon Architecture

Updated September 2026

Architecture · Cambridge, United Kingdom

Rixon Architecture

Cambridge architecture practice specialising in retrofit and low-energy design, led by James Rixon, a Certified Passive House Designer.

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Overview

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Key facts about the practice, its work and working life.

Base
The Entopia Building, 1 Regent Street
Regions
UK - England - Cambridgeshire
Sectors
ResidentialResidential (Private Homes)Retrofit

About

About Rixon Architecture.

Rixon Architecture is a small Cambridge practice specialising in retrofit and low-energy design. James Rixon founded it in 2016 to make existing buildings fit for the future, and the practice also designs low-carbon new buildings for homeowners and commercial clients.

The practice works fabric first and is a signatory of the RIBA 2030 Climate Challenge. As Certified Passive House Designers and retrofit coordinators, the team plans improvements in a sensible order, so that each step makes a home warmer, healthier and lower carbon without ruling out the next one.

Services run from bespoke retrofit reports, air-tightness evaluation and retrofit strategies through Planning and Building Regulations consents to Passivhaus design, embodied and whole-life carbon calculations and on-site project management. Clients can work with the practice on part or all of a project.

James is also a co-founder and director of the Cambridge Retrofit Hub, a community benefit society that guides homeowners through a home energy retrofit from design to completion.

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Rixon Architecture

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Studio
The Entopia Building, 1 Regent Street
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