Planning permission in Spelthorne
What actually happens to planning applications decided by Spelthorne Borough Council: approval rates, decision times, appeal odds and the development plan they are judged against. Figures cover 1,955 applications decided in the two years to July 2026, from the council's public planning register.
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How long does planning permission take in Spelthorne?
Half of decided applications took 54 days or less from validation to decision. The middle 50% of applications took between 48 and 57 days, and 74.2% were decided inside the 8-week statutory target for minor applications. Complex or contested schemes take longer.
The Spelthorne local plan
The Spelthorne Local Plan 2024 to 2039 was adopted in March 2026 as a single document, replacing the previous 2009 development plan in full.
None: the plan is newly adopted, with the council's effort now on supplementary planning documents and a committed early review.
What tends to shape decisions here: Metropolitan Green Belt, extensive Thames and Colne flood zones and Heathrow airport safeguarding are the dominant constraints. Despite the new plan, housing delivery remains below target, so the tilted balance can still be engaged.
If Spelthorne says no: appeal odds
Between 2021 and 2025 the Planning Inspectorate overturned 28.5% of appealed Spelthorne refusals (55 of 193 decided appeals). The national average is 31.1%. More detail, including how Spelthorne ranks nationally: planning appeals in Spelthorne.
Source: decisions published on the Spelthorne Borough Council public planning register, two years to July 2026. Approval rate = approvals divided by approvals plus refusals; withdrawn applications and other outcomes are excluded. We track 7,171 Spelthorne applications in total. Plan facts as of July 2026; always check the council's own pages for the latest position.
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