Currently under con­struc­tion in Esher, Surrey, this highly technical new-build Passivhaus brings together the specialist low-energy expertise of Econekt with the complete main-contracting capa­bil­ity of Urban Eco Homes. The project was originally procured through Econekt, with Urban Eco Homes sub­se­quently appointed as Main Con­trac­tor to deliver the complete build from the groundworks through to final handover, working closely through­out with the architect, who is also the homeowner.

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The property has been designed around Passivhaus principles, with the building fabric and structural solution at the heart of its per­for­mance. The design incor­po­rates a semi-basement, piled foun­da­tions and Econekt’s Passive Slab insulated foundation system, together with the Izodom ICF system to form the high-per­for­mance external envelope. Econekt specialises in Izodom ICF and insulated foundation systems for low-energy and Passivhaus con­struc­tion.

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Structurally, this is a par­tic­u­larly demanding build. The com­bi­na­tion of the piled foun­da­tions, semi-basement, Passive Slab, reinforced ICF con­struc­tion and structural concrete ComFlor roof slab has required detailed coordination between Urban Eco Homes, Econekt, the architect and structural engineers. By bringing the specialist building system and main con­struc­tion package together, the team has been able to resolve the complex interfaces between structure, water­proof­ing, insu­la­tion, air­tight­ness and archi­tec­tural detailing as the project progresses.

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Beyond the high-per­for­mance building envelope, Urban Eco Homes is delivering the property as a complete low-energy home, including the full internal fit-out, finishes and renewable tech­nolo­gies. The project demon­strates the benefit of col­lab­o­ra­tion: Econekt providing specialist Passivhaus and ICF system knowledge, with Urban Eco Homes taking respon­si­bil­ity for the wider con­struc­tion programme and complete delivery of the finished home.

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Currently in progress as of October 2026, the project is scheduled for com­ple­tion in February 2027. We’ll be updating this case study as the build progresses, so check back in February to see the completed home.