Side extensions in Kensington
2,487 applications since 2019. 1,769 approved and 183 refused. Refused: about 1 in 11 here, about 1 in 7 across the councils we cover.
Last updated 9 November 2026.
Without planning permission
- Single storey, no higher than 4 m
- No wider than half the width of the original house
- Not facing a road
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 | 198 | 121 | 6 |
| 2025 | 332 | 259 | 12 |
| 2024 | 398 | 286 | 22 |
| 2023 | 342 | 238 | 30 |
| 2022 | 327 | 244 | 20 |
| 2021 | 325 | 220 | 39 |
| 2020 | 261 | 181 | 20 |
| 2019 | 304 | 220 | 34 |
Neighbouring councils
| Council | Approved | Refused | How often |
|---|---|---|---|
| Brent | 4,513 | 1,385 | about 1 in 4 |
| Hammersmith and Fulham | 15,603 | 1,648 | about 1 in 10 |
| Old Oak Park Royal | 1 | 0 | none |
| Wandsworth | 4,650 | 349 | about 1 in 14 |
| Westminster | 2,406 | 247 | about 1 in 11 |