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    • Standard Document
      PAS Standard

    PAS 2035 - Retrofitting Dwellings for improved Energy Efficiency

    PAS 2035:2023 offers comprehensive guidance for energy retrofitting in existing homes, ensuring efficiency, sustainability, and improved performance.

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    Conduct effective retrofits with PAS 2035

    This document:

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    • PAS 2035 sets out best practice for end to end energy efficiency and 'whole house' retrofits.

    • PAS 2035 is crucial for achieving net zero targets and decarbonization of the built environment.

    • Its use is mandatory for some government funded projects, ensuring aligned energy efficiency.

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