Outbuilding approval rate in Croydon

Croydon approved 75.5% of outbuilding applications, based on 1,570 decisions analysed.

Last updated: August 2026

75.5%

outbuilding approval rate

1,570

Outbuilding decisions

1,186

Approved

384

Refused

81.3%

Croydon overall

Outbuilding applications are refused more often than the Croydon average (81.3%), suggesting the council scrutinises these projects more closely.

How outbuilding compares in Croydon

Outbuilding (1,570 decided)

75.5%

Croydon all applications (40,612 decided)

81.3%

Planning a outbuilding in Croydon?

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Other project types in Croydon

Rear Extension (10,795 decided)

81.4%

Garage / Parking (10,663 decided)

78.6%

New Build (5,327 decided)

78.7%

Side Extension (5,313 decided)

80.1%

Dormer (5,123 decided)

79.5%

Loft Conversion (2,751 decided)

76.5%

Change of Use (Residential) (1,891 decided)

62.0%

Extension (General) (1,846 decided)

81.8%

Basement (1,775 decided)

79.9%

Hip-to-Gable Conversion (1,363 decided)

77.3%

Front Extension (1,090 decided)

80.3%

Wraparound Extension (1,046 decided)

78.1%

HMO (787 decided)

52.9%

Flat Conversion (693 decided)

52.8%

Conservatory (649 decided)

84.9%

Annex (213 decided)

72.3%

← All Croydon planning statistics

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