Side extensions in Stockton-on-Tees
1,492 applications since 2020. 1,338 approved and 49 refused. Refused: about 1 in 28 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 | 169 | 134 | 3 |
| 2025 | 166 | 152 | 3 |
| 2024 | 157 | 148 | 4 |
| 2023 | 166 | 141 | 9 |
| 2022 | 242 | 224 | 9 |
| 2021 | 321 | 298 | 5 |
| 2020 | 271 | 241 | 16 |
Architects and agents, last 5 years
| Firm | Approved | Decided |
|---|---|---|
| Pyramid Architectural Designs | 69 | 73 |
| P.D.S. Architectural Plans | 32 | 32 |
| Anderson Ellis Architecture | 16 | 16 |
| k baker design&development ltd | 13 | 13 |
| Gpdesigns Architectural Services | 10 | 11 |
| D. D. Design Ltd | 8 | 8 |
| Loxton Design Limited | 8 | 8 |
| Stainsby Design | 8 | 8 |
| sjd Architects Ltd | 8 | 8 |
| Architectural Building Consultants | 7 | 7 |
Neighbouring councils
| Council | Approved | Refused | How often |
|---|---|---|---|
| Darlington | 1,046 | 41 | about 1 in 27 |
| Durham | 2,884 | 75 | about 1 in 39 |
| Hartlepool | 1 | 0 | none |
| Middlesbrough | 3,258 | 296 | about 1 in 12 |
| Redcar and Cleveland | 763 | 25 | about 1 in 32 |