Outbuilding approval rate in Barnet

Barnet approved 78.0% of outbuilding applications, based on 3,263 decisions analysed.

Last updated: August 2026

78.0%

outbuilding approval rate

3,263

Outbuilding decisions

2,544

Approved

719

Refused

81.7%

Barnet overall

Outbuilding applications are refused more often than the Barnet average (81.7%), suggesting the council scrutinises these projects more closely.

How outbuilding compares in Barnet

Outbuilding (3,263 decided)

78.0%

Barnet all applications (55,519 decided)

81.7%

Planning a outbuilding in Barnet?

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Other project types in Barnet

Rear Extension (17,862 decided)

75.7%

Garage / Parking (10,889 decided)

82.3%

Dormer (9,502 decided)

81.0%

Loft Conversion (8,411 decided)

80.6%

Side Extension (6,781 decided)

81.6%

Flat Conversion (4,241 decided)

76.2%

Hip-to-Gable Conversion (3,555 decided)

81.8%

Wraparound Extension (2,993 decided)

80.2%

Basement (2,645 decided)

83.1%

Change of Use (Residential) (2,045 decided)

68.9%

New Build (1,976 decided)

81.8%

Front Extension (1,838 decided)

78.8%

Conservatory (1,538 decided)

81.4%

Extension (General) (1,288 decided)

82.3%

HMO (636 decided)

44.2%

Annex (210 decided)

71.9%

← All Barnet planning statistics

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