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Dormer approval rate in Lewisham

Lewisham approved 81.6% of dormer applications, based on 2,095 decisions analysed.

Last updated: August 2026

81.6%
dormer approval rate
2,095
Dormer decisions
1,710
Approved
385
Refused
82.9%
Lewisham overall

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

How dormer compares in Lewisham

Dormer (2,095 decided)
81.6%
Lewisham all applications (25,675 decided)
82.9%

Planning a dormer in Lewisham?

81.6% 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 dormer approval rate
✓ Nearest comparable dormer decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
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Other project types in Lewisham

Rear Extension (4,767 decided)
75.6%
Garage / Parking (3,668 decided)
83.0%
Flat Conversion (2,769 decided)
83.6%
Extension (General) (2,747 decided)
84.2%
Loft Conversion (2,676 decided)
79.3%
78.2%
Basement (1,248 decided)
82.5%
Side Extension (1,189 decided)
75.9%
82.2%
Outbuilding (847 decided)
82.9%
HMO (476 decided)
61.1%
Wraparound Extension (456 decided)
84.9%
Conservatory (366 decided)
83.3%
New Build (304 decided)
88.8%
Annex (81 decided)
69.1%
Front Extension (63 decided)
60.3%
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