Which ward in Harrow has the highest planning approval rate?

Marlborough at 80.8% based on 1,253 decisions.

Which ward in Harrow has the lowest planning approval rate?

Edgware at 69.5% based on 914 decisions.

How much do planning approval rates vary across Harrow?

There is a 11.3% gap between Marlborough and Edgware. Your postcode significantly affects outcomes.

Planning Approval Rates by Ward in Harrow

Planning outcomes in Harrow are highly localised. The gap between the most and least permissive wards is 11.3% — that's not noise, it's a fundamentally different planning environment depending on where you live.

21,804 real decisions·27 wards·Updated June 2026

All 27 wards ranked

#	Ward	Decisions	Approved	Refused	Rate
1	Marlborough	1,253	1,013	240	80.8%
2	Kenton West	856	691	165	80.7%
3	Hatch End	1,128	895	233	79.3%
4	Headstone	523	414	109	79.2%
5	North Harrow	435	340	95	78.2%
6	Kenton East	822	640	182	77.9%
7	Harrow on the Hill	1,049	813	236	77.5%
8	Pinner South	1,347	1,044	303	77.5%
9	West Harrow	696	538	158	77.3%
10	Queensbury	497	384	113	77.3%
11	Pinner	1,385	1,060	325	76.5%
12	Greenhill	1,050	799	251	76.1%
13	Centenary	476	361	115	75.8%
14	Headstone North	552	416	136	75.4%
15	Stanmore	581	436	145	75.0%
16	Rayners Lane	793	594	199	74.9%
17	Belmont	985	732	253	74.3%
18	Roxeth	1,019	756	263	74.2%
19	Canons	1,022	757	265	74.1%
20	Harrow Weald	1,143	841	302	73.6%
21	Headstone South	531	391	140	73.6%
22	Stanmore Park	628	460	168	73.2%
23	Roxbourne	596	427	169	71.6%
24	Wealdstone	497	349	148	70.2%
25	Wealdstone South	270	189	81	70.0%
26	Wealdstone North	325	227	98	69.8%
27	Edgware	914	635	279	69.5%

See how this applies to your postcode →

These are council averages. Your property is specific.

An extension might sail through in Marlborough but face serious resistance in Edgware.
Check your postcode to see what actually happens near your address.

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What the data tells us

A 11.3% gap separates the best and worst wards. Marlborough approves 80.8% of applications while Edgware approves just 69.5%. That's a fundamentally different planning environment.

High volume doesn't mean high approval. Some of the busiest wards aren't the most permissive. The number of applications a ward processes tells you nothing about how likely yours is to succeed.

Ward averages are a starting point, not a guarantee. Your specific outcome depends on your property, your neighbours, your proposal type and the comparable decisions near your address.

Before you spend £5,000+ on architects and drawings

5,255 planning applications in Harrow have been refused since 2020. Many of those homeowners had already paid for drawings and application fees. A free, property-specific report shows you what gets approved — and what gets refused — near your property.

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More Harrow planning data

Nearby councils ward breakdowns

Methodology: Covers 21,804 planning decisions in Harrow, January 2020 to present. Approval rate = approved / (approved + refused). Pending, withdrawn and invalid excluded. Ward boundaries reflect current electoral divisions. Data from Harrow Council's public planning portal. Full methodology →