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Most Common Planning Applications in Camden

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Camden is 13.6% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

19,245 real decisions·17 project types·Updated September 2026
97.3%
Safest: Hip-to-Gable Conversion
83.7%
Lowest: Front Extension
13.6%
Spread
17
Types ranked

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All 17 project types ranked

#TypeDecisionsApprovedRefusedRate
1Hip-to-Gable Conversion37361
97.3%
2Flat Conversion1,2701,22050
96.1%
3Basement4,3514,165186
95.7%
4Change of Use (Residential)4,2864,096190
95.6%
5Garage / Parking1,6801,59981
95.2%
6Outbuilding93689145
95.2%
7Conservatory40238220
95.0%
8Extension (General)1,6711,58586
94.9%
9Wraparound Extension1281208
93.8%
10Rear Extension3,7133,474239
93.6%
11New Build1,1881,10880
93.3%
12Side Extension84678957
93.3%
13Annex60555
91.7%
14Dormer1,4131,281132
90.7%
15HMO16414816
90.2%
16Loft Conversion1,5981,382216
86.5%
17Front Extension1048717
83.7%
See how this applies to your postcode →

These are council averages. Your property is specific.

A hip-to-gable conversion application has a 97.3% approval rate. Front Extension? Just 83.7%.
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What the data tells us

1
The range is massive: 83.7% to 97.3%. 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

1,500 planning applications in Camden 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 Camden planning data

Nearby councils project type rankings

Methodology: Classifies 19,245 decisions in Camden 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 Camden Council's public planning portal, January 2020 to September 2026. Full methodology →
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