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Flat Conversion approval rate in Lambeth

Lambeth approved 89.2% of flat conversion applications, based on 2,903 decisions analysed.

Last updated: August 2026

89.2%
flat conversion approval rate
2,903
Flat Conversion decisions
2,590
Approved
313
Refused
84.5%
Lambeth overall

Flat Conversion applications are approved more often than the Lambeth average (84.5%), suggesting the council is relatively receptive to these projects.

How flat conversion compares in Lambeth

Flat Conversion (2,903 decided)
89.2%
Lambeth all applications (31,836 decided)
84.5%

Planning a flat conversion in Lambeth?

89.2% get approved, but the odds vary by street. Your Full Planning Analysis 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
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Other project types in Lambeth

Rear Extension (6,170 decided)
82.2%
Garage / Parking (4,575 decided)
87.3%
Loft Conversion (3,574 decided)
78.0%
Basement (3,518 decided)
84.7%
Dormer (3,194 decided)
81.3%
79.2%
Side Extension (2,252 decided)
85.2%
New Build (2,138 decided)
85.2%
Extension (General) (1,539 decided)
85.2%
Outbuilding (994 decided)
84.3%
77.0%
Wraparound Extension (396 decided)
83.1%
Conservatory (357 decided)
87.7%
HMO (270 decided)
65.6%
Front Extension (71 decided)
77.5%
Annex (63 decided)
77.8%
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