Side Extension approval rate in Croydon

Croydon approved 79.9% of side extension applications, based on 5,233 decisions analysed.

Last updated: June 2026

79.9%

side extension approval rate

5,233

Side Extension decisions

4,179

Approved

1,054

Refused

80.9%

Croydon overall

Side Extension applications are approved at roughly the same rate as the Croydon average (80.9%).

How side extension compares in Croydon

Side Extension (5,233 decided)

79.9%

Croydon all applications (40,009 decided)

80.9%

Planning a side extension in Croydon?

79.9% 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 Croydon

Rear Extension (10,637 decided)

81.3%

Garage / Parking (10,499 decided)

78.0%

New Build (5,263 decided)

78.3%

Dormer (5,035 decided)

79.3%

Loft Conversion (2,696 decided)

76.2%

Extension (General) (1,818 decided)

81.5%

Change of Use (Residential) (1,814 decided)

60.5%

Basement (1,744 decided)

79.5%

Outbuilding (1,549 decided)

75.0%

Hip-to-Gable Conversion (1,330 decided)

77.1%

Front Extension (1,081 decided)

80.3%

Wraparound Extension (1,030 decided)

77.9%

HMO (741 decided)

50.7%

Flat Conversion (654 decided)

50.5%

Conservatory (640 decided)

84.8%

Annex (213 decided)

71.8%

← All Croydon planning statistics

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