Side Extension approval rate in Brent

Brent approved 74.4% of side extension applications, based on 5,106 decisions analysed.

Last updated: March 2026

74.4%

side extension approval rate

5,106

Side Extension decisions

3,799

Approved

1,307

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 (5,106 decided)

74.4%

Brent all applications (32,531 decided)

76.0%

Planning a side extension in Brent?

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Other project types in Brent

Rear Extension (12,106 decided)

72.6%

Garage / Parking (7,238 decided)

79.2%

Dormer (6,958 decided)

75.5%

Loft Conversion (4,236 decided)

73.3%

Flat Conversion (3,733 decided)

72.0%

Hip-to-Gable Conversion (2,366 decided)

75.3%

Outbuilding (2,356 decided)

66.4%

Change of Use (Residential) (1,985 decided)

68.1%

New Build (1,953 decided)

78.9%

Basement (1,501 decided)

83.5%

Wraparound Extension (1,365 decided)

77.0%

Extension (General) (1,265 decided)

78.3%

Front Extension (752 decided)

64.4%

HMO (722 decided)

44.0%

Conservatory (630 decided)

76.5%

Annex (37 decided)

48.6%

← All Brent planning statistics

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