Side Extension approval rate in Sutton

Sutton approved 79.2% of side extension applications, based on 3,038 decisions analysed.

Last updated: June 2026

79.2%

side extension approval rate

3,038

Side Extension decisions

2,406

Approved

632

Refused

84.2%

Sutton overall

Side Extension applications are refused more often than the Sutton average (84.2%), suggesting the council scrutinises these projects more closely.

How side extension compares in Sutton

Side Extension (3,038 decided)

79.2%

Sutton all applications (18,303 decided)

84.2%

Planning a side extension in Sutton?

79.2% 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 Sutton

Rear Extension (7,190 decided)

80.0%

Garage / Parking (4,117 decided)

82.9%

Dormer (3,128 decided)

83.0%

Extension (General) (2,202 decided)

89.1%

Wraparound Extension (1,079 decided)

79.4%

New Build (1,059 decided)

78.1%

Change of Use (Residential) (966 decided)

82.0%

Front Extension (939 decided)

77.6%

Flat Conversion (916 decided)

91.6%

Outbuilding (846 decided)

81.9%

Hip-to-Gable Conversion (430 decided)

82.6%

Conservatory (416 decided)

84.4%

Basement (234 decided)

84.6%

HMO (185 decided)

75.7%

Annex (154 decided)

73.4%

Loft Conversion (148 decided)

79.1%

← All Sutton planning statistics

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