Rear extensions in Croydon
19,328 applications since 2016. 14,887 approved and 3,486 refused. Refused: about 1 in 5 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 | 953 | 650 | 148 |
| 2025 | 1,235 | 1,002 | 197 |
| 2024 | 1,306 | 988 | 281 |
| 2023 | 1,492 | 1,066 | 367 |
| 2022 | 1,817 | 1,303 | 434 |
| 2021 | 2,188 | 1,617 | 447 |
| 2020 | 1,828 | 1,318 | 415 |
| 2019 | 1,818 | 1,526 | 210 |
| 2018 | 2,015 | 1,736 | 182 |
| 2017 | 2,338 | 1,883 | 341 |
| 2016 | 2,338 | 1,798 | 464 |
Architects and agents, last 5 years
| Firm | Approved | Decided |
|---|---|---|
| Canopy Planning Services Ltd | 99 | 148 |
| Jameson Architectural Surveyors | 83 | 95 |
| LPR Design | 73 | 93 |
| The Harvest Partnership | 63 | 68 |
| Resi Design Ltd | 43 | 46 |
| Walk-in Architecture | 40 | 43 |
| G D Architects Limited | 30 | 44 |
| M.J.Read Building Design | 28 | 35 |
| Planners & Architects | 22 | 32 |
| MM Planning and Architecture | 21 | 29 |
Neighbouring councils
| Council | Approved | Refused | How often |
|---|---|---|---|
| Bromley | 48,638 | 11,174 | about 1 in 5 |
| Lambeth | 7,555 | 1,720 | about 1 in 5 |
| Merton | 7,623 | 1,315 | about 1 in 7 |
| Reigate | 3,559 | 510 | about 1 in 8 |
| Sutton | 6,672 | 1,716 | about 1 in 5 |