Rear extensions in Brecon Beacons
956 applications since 2006. 800 approved and 62 refused. Refused: about 1 in 14 here, about 1 in 7 across the councils we cover.
Last updated 9 November 2026.
Without planning permission
- Up to 3 m deep on a terrace or semi, 4 m on a detached house
- Up to 6 m or 8 m through the neighbour-consultation route, not on protected land
- No higher than 4 m, and eaves no higher than 3 m within 2 m of a boundary
- Together with other buildings, no more than half the garden and grounds
- Materials similar in appearance to the house
England, houses only. Flats, listed buildings, conservation areas and Article 4 directions change this. The full rules.
Year by year
| Year | Applications | Approved | Refused |
|---|---|---|---|
| 2026 | 35 | 22 | 1 |
| 2025 | 29 | 21 | 2 |
| 2024 | 35 | 33 | 1 |
| 2023 | 49 | 44 | 2 |
| 2022 | 60 | 56 | 2 |
| 2021 | 56 | 49 | 4 |
| 2020 | 45 | 38 | 2 |
| 2019 | 56 | 50 | 3 |
| 2018 | 58 | 51 | 2 |
| 2017 | 52 | 46 | 1 |
| 2016 | 62 | 49 | 4 |
| 2015 | 40 | 29 | 4 |
Architects and agents, last 5 years
| Firm | Approved | Decided |
|---|---|---|
| AJN Design & Surveying Services Ltd | 23 | 23 |
| CO2 Architects | 17 | 18 |
| Glyn Smith RIBA Architect | 8 | 8 |
| Morgan & Horowskyj Architects | 6 | 6 |
| LEB Architectural Design | 5 | 6 |