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House Extension Specifications are partially available for evaluation. To use the fully functional Apps, please register for a Standard or Premium account.
Scope of Notes: The Specs are applicable to work in England & Wales only.
Important Note:- For Commercial use of the Specifications & access to Extension, New Build, Loft, Garage Conversion & Garage Build Specs, please see registration schemes.
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These building notes apply only to Single or 2-Storey House Extensions.
It is your responsibility to ensure that the notes are suitable for use in your particular situation.
To compile a House Extension specification, go through the sections on the left, starting from the top, and add notes from the relevant subsections as you proceed.
***Important*** Once you've started adding notes, keep this page open otherwise you may lose your House Extension Specification / Note-List.