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We want to enable you to achieve the best you can in the context of your objectives and resources. We offer our consultancy services to self-builders and their architects.

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Whether you need a single product or the ultimate Passivhaus, your system needs to be well thought out and designed correctly. We adopt a full-circle approach to provide better performing buildings from a carbon, cost, and comfort perspective.

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We provide the knowledge and technology for homes and workplaces to harness their own sustainable energy. We are the pioneers of the sustainable energy revolution

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We want to enable you to achieve the best you can in the context of your objectives and resources. We offer our consultancy services to self-builders and their architects.

Discover all services

Services

Products

We provide the knowledge and technology for homes and workplaces to harness their own sustainable energy. We are the pioneers of the sustainable energy revolution

Find out more

Discover

Case Study | 21 Feb 2024

Choppards Mill: Radical Retrofit

21°’s building team has undertaken a radical retrofit to a three stories property constructed from sandstone and gritstone.

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2021

Choppards Mill: Radical Retrofit

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Change the way you think about energy

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