Side Extension approval rate in Bromley

Bromley approved 78.1% of side extension applications, based on 5,498 decisions analysed.

Last updated: August 2026

78.1%

side extension approval rate

5,498

Side Extension decisions

4,293

Approved

1,205

Refused

81.0%

Bromley overall

Side Extension applications are refused more often than the Bromley average (81.0%), suggesting the council scrutinises these projects more closely.

How side extension compares in Bromley

Side Extension (5,498 decided)

78.1%

Bromley all applications (36,167 decided)

81.0%

Planning a side extension in Bromley?

78.1% get approved, but the odds vary by street. Your Full Planning Analysis shows exactly what gets approved and refused near your property.

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Other project types in Bromley

Rear Extension (10,936 decided)

82.3%

Garage / Parking (8,138 decided)

79.2%

Dormer (5,438 decided)

79.0%

Loft Conversion (4,045 decided)

79.7%

New Build (1,741 decided)

73.2%

Change of Use (Residential) (1,732 decided)

74.4%

Outbuilding (1,693 decided)

77.1%

Hip-to-Gable Conversion (1,648 decided)

80.6%

Front Extension (1,575 decided)

77.5%

Extension (General) (1,453 decided)

78.4%

Conservatory (1,301 decided)

84.2%

Wraparound Extension (1,269 decided)

79.1%

Basement (733 decided)

80.4%

Flat Conversion (256 decided)

74.2%

Annex (224 decided)

62.1%

HMO (173 decided)

57.8%

← All Bromley planning statistics

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