Outbuilding approval rate in Barnet

Barnet approved 78.4% of outbuilding applications, based on 3,194 decisions analysed.

Last updated: June 2026

78.4%

outbuilding approval rate

3,194

Outbuilding decisions

2,503

Approved

691

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 (3,194 decided)

78.4%

Barnet all applications (54,846 decided)

81.7%

Planning a outbuilding in Barnet?

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Other project types in Barnet

Rear Extension (17,627 decided)

75.8%

Garage / Parking (10,782 decided)

82.4%

Dormer (9,394 decided)

81.1%

Loft Conversion (8,299 decided)

80.8%

Side Extension (6,697 decided)

81.6%

Flat Conversion (4,214 decided)

76.2%

Hip-to-Gable Conversion (3,522 decided)

82.1%

Wraparound Extension (2,938 decided)

80.2%

Basement (2,613 decided)

83.2%

Change of Use (Residential) (2,026 decided)

69.1%

New Build (1,964 decided)

81.8%

Front Extension (1,813 decided)

78.9%

Conservatory (1,523 decided)

81.3%

Extension (General) (1,278 decided)

82.2%

HMO (619 decided)

43.9%

Annex (205 decided)

71.2%

← All Barnet planning statistics

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