Data-backed planning intelligence · 3,700,000+ decisions analysed across England, Scotland, Wales and Northern Ireland

New Build approval rate in Harrow

Harrow approved 77.8% of new build applications, based on 63 decisions analysed.

Last updated: August 2026

77.8%
new build approval rate
63
New Build decisions
49
Approved
14
Refused
75.9%
Harrow overall

New Build applications are approved at roughly the same rate as the Harrow average (75.9%).

How new build compares in Harrow

New Build (63 decided)
77.8%
Harrow all applications (22,151 decided)
75.9%

Planning a new build in Harrow?

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Other project types in Harrow

Rear Extension (10,671 decided)
75.4%
Dormer (4,314 decided)
74.6%
Side Extension (4,286 decided)
73.7%
Garage / Parking (3,725 decided)
76.4%
Front Extension (1,922 decided)
77.3%
Outbuilding (1,794 decided)
78.8%
Extension (General) (923 decided)
76.7%
62.5%
Conservatory (588 decided)
80.8%
HMO (304 decided)
55.6%
Wraparound Extension (290 decided)
75.9%
Flat Conversion (278 decided)
63.3%
Basement (268 decided)
69.8%
Loft Conversion (119 decided)
70.6%
Annex (78 decided)
43.6%
86.4%
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