Not all planning applications are created equal. The gap between the highest and lowest approval project type in Hounslow is 46.3% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.
See your ward's approval rate and nearby planning decisions — free and instant.
| # | Type | Decisions | Approved | Refused | Rate |
|---|---|---|---|---|---|
| 1 | Conservatory | 1,942 | 1,838 | 104 | 94.6% |
| 2 | Extension (General) | 3,050 | 2,831 | 219 | 92.8% |
| 3 | Dormer | 1,416 | 1,275 | 141 | 90.0% |
| 4 | New Build | 4,819 | 4,330 | 489 | 89.9% |
| 5 | Loft Conversion | 12,095 | 10,848 | 1,247 | 89.7% |
| 6 | Basement | 1,499 | 1,336 | 163 | 89.1% |
| 7 | Wraparound Extension | 1,509 | 1,343 | 166 | 89.0% |
| 8 | Garage / Parking | 8,803 | 7,786 | 1,017 | 88.4% |
| 9 | Side Extension | 7,834 | 6,895 | 939 | 88.0% |
| 10 | Hip-to-Gable Conversion | 3,271 | 2,791 | 480 | 85.3% |
| 11 | Rear Extension | 26,741 | 22,713 | 4,028 | 84.9% |
| 12 | Front Extension | 1,047 | 867 | 180 | 82.8% |
| 13 | Change of Use (Residential) | 3,114 | 2,570 | 544 | 82.5% |
| 14 | Outbuilding | 4,193 | 3,380 | 813 | 80.6% |
| 15 | Flat Conversion | 1,423 | 1,038 | 385 | 72.9% |
| 16 | Annex | 110 | 75 | 35 | 68.2% |
| 17 | HMO | 358 | 173 | 185 | 48.3% |
A conservatory application has a 94.6% approval rate. HMO? Just 48.3%.
Check your postcode to see what actually happens near your address.
9,019 planning applications in Hounslow have been refused since 2020. Many of those homeowners had already paid for drawings and application fees. A free, property-specific report shows you what gets approved — and what gets refused — near your property.
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