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Most Common Planning Applications in Hammersmith & Fulham

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Hammersmith & Fulham is 13.4% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

19,400 real decisions·17 project types·Updated June 2026
96.6%
Safest: Annex
83.2%
Lowest: Hip-to-Gable Conversion
13.4%
Spread
17
Types ranked

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All 17 project types ranked

#TypeDecisionsApprovedRefusedRate
1Annex29281
96.6%
2Conservatory26224913
95.0%
3Wraparound Extension61574
93.4%
4Extension (General)57253339
93.2%
5New Build77271854
93.0%
6Rear Extension5,2584,869389
92.6%
7Outbuilding56352142
92.5%
8Loft Conversion2,8002,583217
92.2%
9Basement2,7872,569218
92.2%
10Dormer66060555
91.7%
11Side Extension43339637
91.5%
12Front Extension30273
90.0%
13Flat Conversion2,2672,039228
89.9%
14Garage / Parking1,3071,166141
89.2%
15Change of Use (Residential)1,5551,355200
87.1%
16HMO1008614
86.0%
17Hip-to-Gable Conversion1139419
83.2%
See how this applies to your postcode →

These are council averages. Your property is specific.

A annex application has a 96.6% approval rate. Hip-to-Gable Conversion? Just 83.2%.
Check your postcode to see what actually happens near your address.

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What the data tells us

1
The range is massive: 83.2% to 96.6%. Choosing the right project type — or framing your application correctly — can dramatically affect outcomes.
2
Visibility drives scrutiny. Project types that change the external appearance — dormers, loft conversions, hip-to-gable — face more resistance than those that don't. The more visible your proposal, the more carefully it needs designing.
3
These are council-wide averages. Your ward, your street and your immediate neighbours all shift the odds. The comparable decisions near your property are the best indicator of outcome.

Before you spend £5,000+ on architects and drawings

1,521 planning applications in Hammersmith & Fulham 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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More Hammersmith & Fulham planning data

Nearby councils project type rankings

Methodology: Classifies 19,400 decisions in Hammersmith & Fulham into residential project types using keyword matching against proposal descriptions (matching generate_site_data.py subtype rules). A single application may appear in multiple categories. Data from Hammersmith & Fulham Council's public planning portal, January 2020 to present. Full methodology →
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