Outbuilding approval rate in Lewisham

Lewisham approved 82.8% of outbuilding applications, based on 837 decisions analysed.

Last updated: June 2026

82.8%

outbuilding approval rate

837

Outbuilding decisions

693

Approved

144

Refused

82.9%

Lewisham overall

Outbuilding applications are approved at roughly the same rate as the Lewisham average (82.9%).

How outbuilding compares in Lewisham

Outbuilding (837 decided)

82.8%

Lewisham all applications (25,419 decided)

82.9%

Planning a outbuilding in Lewisham?

82.8% 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 outbuilding approval rate
✓ Nearest comparable outbuilding decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect

Free planning check for Lewisham →

Other project types in Lewisham

Rear Extension (4,713 decided)

75.5%

Garage / Parking (3,651 decided)

83.1%

Flat Conversion (2,760 decided)

83.7%

Extension (General) (2,724 decided)

84.1%

Loft Conversion (2,647 decided)

79.3%

Dormer (2,062 decided)

81.5%

Change of Use (Residential) (2,046 decided)

78.5%

Basement (1,243 decided)

82.5%

Side Extension (1,181 decided)

76.0%

Hip-to-Gable Conversion (892 decided)

82.0%

HMO (470 decided)

61.3%

Wraparound Extension (449 decided)

84.6%

Conservatory (363 decided)

83.2%

New Build (303 decided)

88.8%

Annex (80 decided)

68.8%

Front Extension (61 decided)

60.7%

← All Lewisham planning statistics

Check planning approval patterns, Free