Annex approval rate in Brent

Brent approved 48.6% of annex applications, based on 37 decisions analysed.

Last updated: June 2026

48.6%

annex approval rate

Annex decisions

Approved

Refused

76.0%

Brent overall

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

How annex compares in Brent

Annex (37 decided)

48.6%

Brent all applications (32,958 decided)

76.0%

Planning a annex in Brent?

48.6% 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 (12,232 decided)

72.6%

Garage / Parking (7,272 decided)

79.2%

Dormer (7,009 decided)

75.5%

Side Extension (5,158 decided)

74.3%

Loft Conversion (4,278 decided)

73.3%

Flat Conversion (3,743 decided)

71.9%

Hip-to-Gable Conversion (2,391 decided)

75.4%

Outbuilding (2,380 decided)

66.6%

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

67.9%

New Build (1,938 decided)

78.8%

Basement (1,503 decided)

83.6%

Wraparound Extension (1,399 decided)

76.9%

Extension (General) (1,287 decided)

78.2%

Front Extension (760 decided)

64.3%

HMO (742 decided)

44.5%

Conservatory (636 decided)

76.4%

← All Brent planning statistics

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