Osmington Horton Road Horton Slough SL3 9NU Data via plota.co.uk

26/01453/FULL - Full Awaiting decision

Proposal

Conversion of the existing dwelling into 4no. flats to include part single part two storey rear extension, loft conversion, 1no. rear Juliet balcony, bin storage, hardstanding and alterations to fenestration following demolition of existing elements. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
11 Jun 2026
✓
Validated
22 Sept 2026
Decision
Expected by 16 Nov 2026

Under consideration

No decision has been issued yet. Plota predicts a decision around 16 Nov 2026, from Windsor and Maidenhead's recent changes of use.

Comments are open until 21 Oct 2026

Comment on this application ↗

Site constraints 5

Grade II listed: The Crown Public House and Attached Barn
List entry 1313048 · 26 m away · 1 more listed building within 150 m (1 Grade II)
Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show the other one with distances
Historic England ↗
Green belt: London
Inappropriate development needs very special circumstances.
Green belt policy allows a short list of exceptions, such as limited extensions and replacement buildings. Anything else needs very special circumstances that clearly outweigh the harm. Some green belt land can count as grey belt, where it does not strongly serve the green belt's purposes. The council decides this in its green belt assessment or on each application, so we do not mark it here.
Read the government guidance ↗
Agricultural land, grade 2
Best and most versatile land (grades 1, 2 and 3a). Source: the Predictive Agricultural Land Classification Map (Defra and Natural England, 2025; the Welsh Government's Predictive ALC Map 2 in Wales), a model rather than a site survey. Natural England's Provisional ALC map (1:250,000, 1970s), which most planning maps still show, had this area as grade 1. The predicted grade is Defra's current estimate; only a site survey settles it.
Where development of farmland is needed, policy prefers poorer land over the best and most versatile (grades 1, 2 and 3a). Three sources: Natural England's post-1988 field surveys, which are definitive where they exist; the Defra predictive map for England (2025) and the Welsh Government predictive map, modelled from the soil map with 3a and 3b split; and the 1970s provisional map, which planners and other services still show, coarser and with grade 3 undivided. Where the provisional and predicted grades disagree, treat the predicted grade as the current estimate and expect an application to carry its own survey.
Habitat network: Network Enhancement Zone 1
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
National infrastructure project 1756 m away: M4 Junctions 3 to 12 Smart Motorway.
Not affected
Outside flood zones 2 and 3 · 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.

Sales history 1

Last sold for £745,000 in February 2021. Detached house, freehold.

23 February 2021£745,000

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area178 m² (1,916 sq ft)
Energy ratingD (65 out of 100), could reach C
PropertyDetached house, 11 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsSystem built, as built, no insulation (assumed)

From the energy performance certificate lodged in September 2020, the latest held for this property. The building may have changed since. View the certificate

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Important details

Application type
Full
Postcode
SL3 9NU
Received
11 Jun 2026
Validated
22 Sept 2026
Ward
Datchet Horton And Wraysbury
Parish
Horton Parish
Case officer
Show
Target decision
16 Nov 2026
Applicant
Show

Decision outlook

Day 18 of the 56-day target. Windsor and Maidenhead usually decides changes of use by day 55.

Day 1838 days to the 56-day target
62%decided within 8 weeks
64%approved
78decided in the last year

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

Consultation & key dates

Alt. reference
PP-14968477
Planning Portal ref
PP-14968477
Comments by
21 Oct 2026
Statutory expiry
16 Nov 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

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

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

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.