Side extensions in Dover
2,065 applications since 2016. 1,830 approved and 134 refused. Refused: about 1 in 15 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 | 117 | 77 | 8 |
| 2025 | 193 | 173 | 12 |
| 2024 | 177 | 167 | 6 |
| 2023 | 167 | 147 | 10 |
| 2022 | 235 | 210 | 15 |
| 2021 | 241 | 215 | 17 |
| 2020 | 174 | 164 | 7 |
| 2019 | 189 | 176 | 7 |
| 2018 | 199 | 184 | 12 |
| 2017 | 204 | 175 | 17 |
| 2016 | 169 | 142 | 23 |
Architects and agents, last 5 years
| Firm | Approved | Decided |
|---|---|---|
| Cason Green Associates | 48 | 48 |
| Smith Group Kent Ltd | 42 | 42 |
| Manse Designs Ltd | 23 | 24 |
| Tilby Design Ltd. | 22 | 22 |
| Halshaw Architecture Ltd. | 21 | 22 |
| LT Drawing Services Ltd | 14 | 15 |
| Jason Davies Architectural Services | 8 | 9 |
| Invent Architecture Ltd | 7 | 7 |
| Lynn Davis Architects | 6 | 10 |
| Red House Design | 6 | 7 |
Neighbouring councils
| Council | Approved | Refused | How often |
|---|---|---|---|
| Shepway | 0 | 0 | none |
| Thanet | 1,929 | 184 | about 1 in 11 |