Rear extensions in Calderdale
1,868 applications since 2020. 1,389 approved and 200 refused. Refused: about 1 in 8 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 | 165 | 96 | 15 |
| 2025 | 187 | 144 | 12 |
| 2024 | 219 | 157 | 36 |
| 2023 | 261 | 180 | 44 |
| 2022 | 337 | 262 | 36 |
| 2021 | 381 | 320 | 25 |
| 2020 | 318 | 230 | 32 |
Architects and agents, last 5 years
| Firm | Approved | Decided |
|---|---|---|
| Stonehouse & Co. | 24 | 25 |
| AT Architectural Services | 13 | 17 |
| Pd Architectural Services | 12 | 13 |
| Pickles Architecture | 12 | 12 |
| Langley Architectural | 10 | 12 |
| Belmont design services ltd | 9 | 9 |
| Storah Architecture | 8 | 8 |
| Code L6 Architecture Ltd | 7 | 10 |
| Calder Valley Architects | 7 | 7 |
| Orange Design Studio | 6 | 6 |
Neighbouring councils
| Council | Approved | Refused | How often |
|---|---|---|---|
| Burnley | 279 | 50 | about 1 in 7 |
| Kirklees | 3,192 | 515 | about 1 in 7 |
| Oldham | 2,528 | 261 | about 1 in 11 |
| Pendle | 763 | 114 | about 1 in 8 |
| Rochdale | 2,077 | 524 | about 1 in 5 |
| Rossendale | 536 | 94 | about 1 in 7 |