Dormer approval rate in Harrow
Harrow approved 74.6% of dormer applications, based on 4,370 decisions analysed.
Last updated: September 2026
74.6%
dormer approval rate
4,370
Dormer decisions
3,262
Approved
1,108
Refused
73.1%
Harrow overall
Dormer applications are approved at roughly the same rate as the Harrow average (73.1%).
How dormer compares in Harrow
Dormer
74.6%
Harrow all applications
73.1%
Planning a dormer in Harrow?
74.6% 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
Free planning check for Harrow →
✓ Nearest comparable dormer decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Planning professional? PlanningLens runs refusal alerts and evidence packs for Harrow and any other published UK council — see the data services →
Other project types in Harrow
75.4%
73.7%
76.4%
77.3%
78.7%
77.0%
80.9%
55.6%
76.0%
63.1%
69.0%
70.8%
44.3%
76.5%
86.4%