Outbuilding approval rate in Brent

Brent approved 66.4% of outbuilding applications, based on 2,356 decisions analysed.

Last updated: March 2026

66.4%

outbuilding approval rate

2,356

Outbuilding decisions

1,564

Approved

792

Refused

76.0%

Brent overall

Outbuilding applications are refused more often than the Brent average (76.0%), suggesting the council scrutinises these projects more closely.

How outbuilding compares in Brent

Outbuilding (2,356 decided)

66.4%

Brent all applications (32,531 decided)

76.0%

Planning a outbuilding in Brent?

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Less than one set of revised drawings.

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%

Side Extension (5,106 decided)

74.4%

Loft Conversion (4,236 decided)

73.3%

Flat Conversion (3,733 decided)

72.0%

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

75.3%

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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