Side Extension approval rate in Brent

Brent approved 74.3% of side extension applications, based on 5,155 decisions analysed.

Last updated: August 2026

74.3%

side extension approval rate

5,155

Side Extension decisions

3,830

Approved

1,325

Refused

76.0%

Brent overall

Side Extension applications are approved at roughly the same rate as the Brent average (76.0%).

How side extension compares in Brent

Side Extension (5,155 decided)

74.3%

Brent all applications (32,963 decided)

76.0%

Planning a side extension in Brent?

74.3% 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 Brent

Rear Extension (12,230 decided)

72.6%

Garage / Parking (7,268 decided)

79.2%

Dormer (7,005 decided)

75.5%

Loft Conversion (4,278 decided)

73.3%

Flat Conversion (3,742 decided)

71.9%

Hip-to-Gable Conversion (2,389 decided)

75.4%

Outbuilding (2,378 decided)

66.5%

Change of Use (Residential) (2,005 decided)

67.9%

New Build (1,935 decided)

78.8%

Basement (1,503 decided)

83.6%

Wraparound Extension (1,398 decided)

76.9%

Extension (General) (1,286 decided)

78.2%

Front Extension (760 decided)

64.3%

HMO (740 decided)

44.5%

Conservatory (636 decided)

76.4%

Annex (37 decided)

48.6%

← All Brent planning statistics

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