Westfield 141A Slough Road Datchet Slough SL3 9AE Data via plota.co.uk

26/01944/FULL - Full Awaiting decision

Proposal

Single storey front/side extension and porch, two storey rear infill extension, 1no. rear dormer, alterations to the roof, external finish and fenestration. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
6 Aug 2026
✓
Validated
19 Aug 2026
Decision
Expected by 13 Oct 2026

Under consideration

No decision has been issued yet. Plota predicts a decision around 11 Oct 2026, from Windsor and Maidenhead's recent extensions.

The consultation period closed on 16 Sept 2026.

Site constraints 5

Flood zone 2, rivers and sea
Medium chance: between a 1 in 100 and 1 in 1,000 annual chance from rivers, or 1 in 200 to 1 in 1,000 from the sea. Any development here needs a flood risk assessment. Defences are not counted.
The Environment Agency flood map for planning. Homes in zone 3 must also pass the sequential test. Surface water flooding is a separate map.
Flood map ↗
National infrastructure project 78 m away: M4 Junctions 3 to 12 Smart Motorway
The site is 78 m from the project boundary. Highway, decided. The project page says whether consent was granted. Also within 2 km: Expansion of Heathrow Airport (Third Runway) (at pre-application, 1084 m).
Nationally significant infrastructure projects (power stations, electricity lines, pipelines, major roads and railways, harbours, airports and reservoirs) are consented by a Secretary of State under the Planning Act 2008, after an examination by the Planning Inspectorate, rather than by the council. The boundary is the one the Inspectorate consults on and can change as the scheme does. Projects are shown within 2 km of the site.
Planning Inspectorate project page ↗
Also on the record
Green belt 17 m away: London; Inside the Datchet built-up area; Natural England's Provisional ALC map (1:250,000, 1970s) had this area as grade 1, but it predates the buildings here and the current map does not class it as farmland.
Not affected
No listed building at the site · No scheduled monument at the site

Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

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Important details

Application type
Full
Postcode
SL3 9AE
Received
6 Aug 2026
Validated
19 Aug 2026
Ward
Datchet Horton And Wraysbury
Parish
Datchet Parish
Case officer
Show
Target decision
13 Oct 2026
Applicant
Show

Decision outlook

Day 52 of the 56-day target. Windsor and Maidenhead usually decides extensions by day 53.

Day 524 days to the 56-day target
77%decided within 8 weeks
75%approved
835decided in the last year

Plota live figures for extensions decided by Windsor and Maidenhead in the last twelve months, from validation. Windsor and Maidenhead decision record →

Consultation & key dates

Alt. reference
PP-15140101
Planning Portal ref
PP-15140101
Comments by
16 Sept 2026
Statutory expiry
13 Oct 2026
Env. assessment
No
Windsor and Maidenhead
Planning Authority Score
5.3/10
Average
#135 of 296 councils
Relevant to this application:
Householder decisions

Windsor and Maidenhead is faster than most councils at deciding householder applications, ranking #82 out of 296. Only 28% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Windsor and Maidenhead is also one of the strictest councils - it refuses more householder applications than almost any other, with only 74% approved vs 90% nationally.

One of the strictest councils
only 74% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Windsor and Maidenhead decision statistics
Based on MHCLG data, the year to March 2026
72%
Overall approval rate
Below avg (87%) #293 of 296
74%
Householder approved
Below avg (90%) #294 of 296
75%
Decided in 8 weeks
Above avg (63%) #82 of 296
28%
Extended time limit
Below avg (41%) #47 of 296
44%
Minor dwellings approved
156 decided (1-9 homes)
96%
Major dwellings approved
27 decided (10+ homes)
64%
Change of use approved
25 decided
1,530
Total decisions
434 refused in the year to March 2026

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use