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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 13.1% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

14,848 real decisions·17 project types·Updated September 2026
96.6%
Safest: Annex
83.5%
Lowest: Hip-to-Gable Conversion
13.1%
Spread
17
Types ranked

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All 17 project types ranked

#TypeDecisionsApprovedRefusedRate
1Annex29281
96.6%
2Conservatory27225913
95.2%
3Wraparound Extension62584
93.5%
4New Build77672353
93.2%
5Extension (General)57353439
93.2%
6Rear Extension5,3504,958392
92.7%
7Outbuilding57253042
92.7%
8Loft Conversion2,8462,626220
92.3%
9Basement2,8122,596216
92.3%
10Dormer67461955
91.8%
11Side Extension44741037
91.7%
12Front Extension30273
90.0%
13Flat Conversion2,2752,048227
90.0%
14Garage / Parking1,3201,179141
89.3%
15Change of Use (Residential)1,5691,371198
87.4%
16HMO1028814
86.3%
17Hip-to-Gable Conversion1159619
83.5%
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 83.5%.
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: 83.5% 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

1,269 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 14,848 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 September 2026. Full methodology →
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