Which ward in Windsor & Maidenhead has the highest planning approval rate?

St Marys at 90.6% based on 299 decisions.

Which ward in Windsor & Maidenhead has the lowest planning approval rate?

Datchet Horton And Wraysbury at 72.7% based on 578 decisions.

How much do planning approval rates vary across Windsor & Maidenhead?

There is a 17.9% gap between St Marys and Datchet Horton And Wraysbury. Your postcode significantly affects outcomes.

Planning Approval Rates by Ward in Windsor & Maidenhead

Planning outcomes in Windsor & Maidenhead are highly localised. The gap between the most and least permissive wards is 17.9% — that's not noise, it's a fundamentally different planning environment depending on where you live.

7,868 real decisions·19 wards·Updated August 2026

84.3% approved overall. But 1,236 applications refused since 2020. Where you live in Windsor & Maidenhead shifts your odds by up to 17.9%. The council average doesn't tell you which side of that gap you're on.

Check Planning Approval Patterns in Windsor & Maidenhead

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All 19 wards ranked

#	Ward	Decisions	Approved	Refused	Rate
1	St Marys	299	271	28	90.6%
2	Cox Green	229	204	25	89.1%
3	Bisham And Cookham	751	661	90	88.0%
4	Pinkneys Green	254	222	32	87.4%
5	Hurley And Walthams	635	555	80	87.4%
6	Eton And Castle	846	735	111	86.9%
7	Belmont	275	237	38	86.2%
8	Boyn Hill	259	221	38	85.3%
9	Riverside	347	295	52	85.0%
10	Clewer East	276	234	42	84.8%
11	Furze Platt	236	200	36	84.7%
12	Bray	562	469	93	83.5%
13	Clewer And Dedworth East	256	212	44	82.8%
14	Clewer And Dedworth West	290	240	50	82.8%
15	Old Windsor	316	261	55	82.6%
16	Oldfield	230	190	40	82.6%
17	Sunningdale And Cheapside	526	429	97	81.6%
18	Ascot & Sunninghill	658	537	121	81.6%
19	Datchet Horton And Wraysbury	578	420	158	72.7%

See how this applies to your postcode →

These are council averages. Your property is specific.

An extension might sail through in St Marys but face serious resistance in Datchet Horton And Wraysbury.
Check your postcode to see what actually happens near your address.

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What the data tells us

A 17.9% gap separates the best and worst wards. St Marys approves 90.6% of applications while Datchet Horton And Wraysbury approves just 72.7%. 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

1,236 planning applications in Windsor & Maidenhead 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 Windsor & Maidenhead planning data

Nearby councils ward breakdowns

Methodology: Covers 7,868 planning decisions in Windsor & Maidenhead, January 2020 to August 2026. Approval rate = approved / (approved + refused). Pending, withdrawn and invalid excluded. Ward boundaries reflect current electoral divisions. Data from Windsor & Maidenhead Council's public planning portal. Full methodology →