Basement approval rate in Croydon

Croydon approved 79.5% of basement applications, based on 1,704 decisions analysed.

Last updated: May 2026

79.5%

basement approval rate

1,704

Basement decisions

1,355

Approved

349

Refused

80.8%

Croydon overall

Basement applications are approved at roughly the same rate as the Croydon average (80.8%).

How basement compares in Croydon

Basement (1,704 decided)

79.5%

Croydon all applications (38,435 decided)

80.8%

Planning a basement in Croydon?

79.5% 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

Garage / Parking (10,172 decided)

77.8%

Rear Extension (10,142 decided)

81.1%

New Build (5,099 decided)

78.2%

Side Extension (4,960 decided)

79.4%

Dormer (4,807 decided)

79.2%

Loft Conversion (2,549 decided)

75.8%

Extension (General) (1,739 decided)

81.4%

Change of Use (Residential) (1,701 decided)

60.6%

Outbuilding (1,457 decided)

74.1%

Hip-to-Gable Conversion (1,267 decided)

76.6%

Front Extension (1,008 decided)

79.5%

Wraparound Extension (982 decided)

77.6%

HMO (678 decided)

49.4%

Flat Conversion (613 decided)

49.4%

Conservatory (604 decided)

84.9%

Annex (208 decided)

71.2%

← All Croydon planning statistics

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