Side extensions in Lewisham
1,534 applications since 2019. 1,071 approved and 321 refused. Refused: about 1 in 4 here, about 1 in 7 across the councils we cover.
Last updated 8 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 | 85 | 49 | 14 |
| 2025 | 136 | 110 | 23 |
| 2024 | 152 | 117 | 30 |
| 2023 | 173 | 128 | 33 |
| 2022 | 234 | 169 | 50 |
| 2021 | 289 | 192 | 70 |
| 2020 | 206 | 131 | 51 |
| 2019 | 259 | 175 | 50 |
Architects and agents, last 5 years
| Firm | Approved | Decided |
|---|---|---|
| Design Team | 14 | 15 |
| Resi Design Ltd | 12 | 12 |
| Neel Dakshy Architecture | 10 | 10 |
| Design Squared Ltd | 9 | 9 |
| The Art of Building Ltd | 8 | 8 |
| Green Tea Architects | 6 | 7 |
| LJT Architects Ltd | 5 | 7 |
| Design and Plan Consultants Ltd | 4 | 5 |
| MEA Studio Ltd | 4 | 5 |
| NewT design&build | 3 | 6 |
Neighbouring councils
| Council | Approved | Refused | How often |
|---|---|---|---|
| Bromley | 31,880 | 8,306 | about 1 in 5 |
| Greenwich | 1,546 | 1,000 | about 1 in 3 |
| Southwark | 3,514 | 258 | about 1 in 15 |
| Tower Hamlets | 881 | 203 | about 1 in 5 |