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Most Common Planning Applications in Bromley

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Bromley is 26.4% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

36,213 real decisions·17 project types·Updated June 2026
84.2%
Safest: Conservatory
57.8%
Lowest: HMO
26.4%
Spread
17
Types ranked

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All 17 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory1,3011,096205
84.2%
2Rear Extension10,9388,9981,940
82.3%
3Hip-to-Gable Conversion1,6481,328320
80.6%
4Basement733589144
80.4%
5Loft Conversion4,0463,222824
79.6%
6Garage / Parking8,1416,4421,699
79.1%
7Wraparound Extension1,2691,004265
79.1%
8Dormer5,4394,2951,144
79.0%
9Extension (General)1,4541,139315
78.3%
10Side Extension5,4984,2931,205
78.1%
11Front Extension1,5751,220355
77.5%
12Outbuilding1,6951,305390
77.0%
13Change of Use (Residential)1,7331,289444
74.4%
14Flat Conversion25619066
74.2%
15New Build1,7441,274470
73.1%
16Annex22413985
62.1%
17HMO17310073
57.8%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 84.2% approval rate. HMO? Just 57.8%.
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What the data tells us

1
The range is massive: 57.8% to 84.2%. 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

6,910 planning applications in Bromley 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 Bromley planning data

Nearby councils project type rankings

Methodology: Classifies 36,213 decisions in Bromley 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 Bromley Council's public planning portal, January 2020 to present. Full methodology →
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