Front extensions and porches in Hertsmere
2,388 applications since 2018. 1,940 approved and 277 refused. Refused: about 1 in 8 here, about 1 in 7 across the councils we cover.
Last updated 9 November 2026.
Planning permission
An extension beyond the front of the house facing a road is never permitted development. Only a small porch is.
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 | 160 | 105 | 18 |
| 2025 | 218 | 189 | 16 |
| 2024 | 210 | 182 | 15 |
| 2023 | 249 | 184 | 50 |
| 2022 | 308 | 247 | 41 |
| 2021 | 361 | 325 | 24 |
| 2020 | 295 | 250 | 28 |
| 2019 | 274 | 216 | 35 |
| 2018 | 313 | 242 | 50 |
Architects and agents, last 5 years
| Firm | Approved | Decided |
|---|---|---|
| A.J Ferryman & Associates | 33 | 33 |
| Town & Country Planning Limited | 25 | 26 |
| PLK Design Limited | 18 | 22 |
| Steene Associates (Architects) Ltd | 18 | 20 |
| Area Design | 14 | 15 |
| Phi Architectural Services Ltd. | 13 | 14 |
| Langley Planning & Design Ltd | 9 | 10 |
| Architects Corporation Ltd | 8 | 9 |
| YOOP Architects | 8 | 8 |
| henry planning ltd | 7 | 7 |
Neighbouring councils
| Council | Approved | Refused | How often |
|---|---|---|---|
| Barnet | 8,986 | 1,949 | about 1 in 6 |
| Enfield | 3,454 | 1,083 | about 1 in 4 |
| Harrow | 2,611 | 775 | about 1 in 4 |
| Welwyn Hatfield | 1,039 | 282 | about 1 in 5 |