The Larger Home Extension Scheme allows single-storey rear extensions up to 8m (detached) or 6m without full planning permission — but neighbours can object. Here’s how it works.
The Larger Home Extension Scheme (also called the Neighbour Consultation Scheme) is part of Part 1, Class A of the GPDO 2015. It permits single-storey rear extensions beyond the standard 4m/3m limit — up to 8m for detached houses and 6m for all other dwellinghouses — subject to a prior approval process where neighbours can object. If a neighbour objects and the council considers the impact unacceptable, the larger extension may be refused. If no objections are received, the extension can proceed. The scheme applies to England only.
| Route | Depth Limit |
|---|---|
| Standard PD (Class A) | Detached houses: 4m. All other houses: 3m. No prior approval needed. |
| Larger Home Extension Scheme | Detached houses: up to 8m. All other houses: up to 6m. Prior approval required. |
| Both | Maximum height 4m. Single storey only. Cannot be within 2m of a boundary if over 3m height. |
The council can only assess the impact on the amenity of the adjoining premises: loss of daylight, overlooking, and visual dominance. It cannot refuse on design, property value, or other grounds.
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