Outbuilding approval rate in Barnet

Barnet approved 78.6% of outbuilding applications, based on 3,104 decisions analysed.

Last updated: March 2026

78.6%

outbuilding approval rate

3,104

Outbuilding decisions

2,441

Approved

663

Refused

81.8%

Barnet overall

Outbuilding applications are refused more often than the Barnet average (81.8%), suggesting the council scrutinises these projects more closely.

How outbuilding compares in Barnet

Outbuilding (3,104 decided)

78.6%

Barnet all applications (53,415 decided)

81.8%

Planning a outbuilding in Barnet?

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Less than one set of revised drawings.

Other project types in Barnet

Rear Extension (17,196 decided)

75.9%

Garage / Parking (10,560 decided)

82.6%

Dormer (9,213 decided)

81.2%

Loft Conversion (8,125 decided)

80.9%

Side Extension (6,503 decided)

81.8%

Flat Conversion (4,171 decided)

76.4%

Hip-to-Gable Conversion (3,471 decided)

82.3%

Wraparound Extension (2,881 decided)

80.4%

Basement (2,575 decided)

83.5%

Change of Use (Residential) (1,973 decided)

69.6%

New Build (1,933 decided)

81.8%

Front Extension (1,766 decided)

78.9%

Conservatory (1,489 decided)

81.8%

Extension (General) (1,244 decided)

82.7%

HMO (581 decided)

44.4%

Annex (205 decided)

72.2%

← All Barnet planning statistics

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