Annex approval rate in Lewisham

Lewisham approved 67.5% of annex applications, based on 77 decisions analysed.

Last updated: March 2026

67.5%

annex approval rate

Annex decisions

Approved

Refused

82.9%

Lewisham overall

Annex applications are refused more often than the Lewisham average (82.9%), suggesting the council scrutinises these projects more closely.

How annex compares in Lewisham

Annex (77 decided)

67.5%

Lewisham all applications (24,367 decided)

82.9%

Planning a annex in Lewisham?

67.5% get approved — but the odds vary by street. Your Pro Report shows exactly what gets approved and refused near your property.

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

Get Lewisham Pro Report — £79

Less than one set of revised drawings.

Other project types in Lewisham

Rear Extension (4,494 decided)

75.4%

Garage / Parking (3,589 decided)

83.2%

Flat Conversion (2,727 decided)

84.0%

Extension (General) (2,648 decided)

84.2%

Loft Conversion (2,555 decided)

79.3%

Change of Use (Residential) (1,997 decided)

79.2%

Dormer (1,945 decided)

80.9%

Basement (1,223 decided)

82.7%

Side Extension (1,146 decided)

75.4%

Hip-to-Gable Conversion (853 decided)

81.7%

Outbuilding (796 decided)

82.3%

HMO (442 decided)

64.5%

Wraparound Extension (420 decided)

84.0%

Conservatory (352 decided)

82.7%

New Build (299 decided)

89.0%

Front Extension (55 decided)

60.0%

← All Lewisham planning statistics

Check planning approval patterns — Free