Flat Conversion approval rate in Croydon

Croydon approved 49.4% of flat conversion applications, based on 613 decisions analysed.

Last updated: March 2026

49.4%

flat conversion approval rate

613

Flat Conversion decisions

303

Approved

310

Refused

80.8%

Croydon overall

Flat Conversion applications are refused more often than the Croydon average (80.8%), suggesting the council scrutinises these projects more closely.

How flat conversion compares in Croydon

Flat Conversion (613 decided)

49.4%

Croydon all applications (38,435 decided)

80.8%

Planning a flat conversion in Croydon?

49.4% get approved — but the odds vary by street. Your Pro Report shows exactly what gets approved and refused near your property.

✓ Your ward's flat conversion approval rate
✓ Nearest comparable flat conversion decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect

Get Croydon Pro Report — £79

Less than one set of revised drawings.

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%

Basement (1,704 decided)

79.5%

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%

Conservatory (604 decided)

84.9%

Annex (208 decided)

71.2%

← All Croydon planning statistics

Check planning approval patterns — Free