What permitted development records should homeowners keep?

Why proof beats memory

Many extensions are lawful without full planning permission because they fall within permitted development classes. A future buyer cannot guess that: they need paperwork.

What to retain

Lawful development certificate: especially for larger rear extensions and loft conversions.

Prior approval decisions: where the procedure applied, for example larger home extensions or agricultural buildings converted to homes through permitted routes.

Dimensions pack: drawings with measured heights, distances to boundaries, and eaves heights where relevant.

Neighbour correspondence: if prior approval involved consultation.

For Wales, keep equivalent evidence issued under Welsh rules where applicable.

Using Property Passport UK

Start from the address on [Property Search](/search). When you own or manage the home, [claim your Property Passport](/claim/start) and upload Documents with clear dates and sources. Browse more explainers in the [Property Guides library](/guides). This article is general information, not legal, tax, mortgage, or survey advice.