251 St Leonards Road Windsor SL4 3DR Data via plota.co.uk

26/02438/FULL - Full Awaiting decision
DemolitionExtensions & alterations

Proposal

Single storey side/rear extension following demolition of existing conservatory. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
6 Oct 2026
✓
Validated
20 Oct 2026
Decision
Expected by 14 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision around 13 Dec 2026, from Windsor and Maidenhead's recent demolitions.

Comments are open until 17 Nov 2026

Comment on this application ↗

Documents 4

Application forms 2

PDF Application form redacted Application Forms · 6 Oct 2026 View ↗ PDF Cil form 1 CIL Documents · 6 Oct 2026 View ↗

Consultation & comments 1

PDF Neighbour notification list Neighbour Notification List · 21 Oct 2026 View ↗

Other documents 1

PDF History log Property History · 20 Oct 2026 View ↗

All documents on the council site ↗

Site constraints 6

Special area of conservation 154 m away: Windsor Forest & Great Park
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
SSSI 154 m away: Windsor Forest and Great Park SSSI
Natural England may need consulting, depending on what is proposed.
Sites of special scientific interest are the best wildlife and geological sites in the country. Development likely to harm one is rarely permitted.
Also on the record
1 listed building within 150 m; Registered park or garden 219 m away: The Royal Estate, Windsor: Windsor Great Park; Inside the Windsor built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 22 October 2026. Historic England, the Environment Agency, Natural England 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 4

Last sold for £600,000 in August 2019. Terraced house, freehold.

25 August 2019£600,000
4 January 2013£450,000
25 November 2002£265,000
12 April 1999£142,500

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

Building

Floor area118 m² (1,270 sq ft)
Energy ratingE (47 out of 100)
PropertyMid-terrace house, 5 habitable rooms
BuiltBefore 1900
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in December 2011, the latest held for this property. The building may have changed since. View the certificate

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Other new applications on this street

5 Oct 2026Pending

Windsor Centre of Acupuncture 5A St Leonards Road Windsor SL4 3BN

Details required by Condition 3 (Roof covering) and 6 (Biodiversity enhancement)...

26/02432/CONDIT
21 Aug 2026Pending

23 St Leonards Road Windsor SL4 3BP

Change of use from retail shop to cafe and the installation of an extraction sys...

26/01992/FULL
22 Jul 2026Approved

Master Barbers 21 St Leonards Road Windsor SL4 3BP

Part single part two storey rear extension, fire escape stairs and alterations t...

26/01739/FULL
21 Jul 2026Withdrawn

Best Meze Grill 71 St Leonards Road Windsor SL4 3BZ

Single-storey rear extension, new plant equipment, alterations to fenestration a...

26/01516/FULL

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12 Oct 2026Pending

11 Queen Annes Road Windsor SL4 2BJ

T5 Horse chestnut - fell (024/2008/TPO).

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12 Oct 2026Pending

56 Bolton Road Windsor SL4 3JL

Single storey side/rear extension.

26/02494/FULL
8 Oct 2026Pending

Land Adjacent To 4 Block D Cavalry Crescent Windsor

Details required by Condition 2 (Contaminated Land) of planning permission 23/01...

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29 Sept 2026Pending

52 Victor Road Windsor SL4 3JU

Single Storey Rear Extension

26/02379/FULL
9 Sept 2026Pending

109 Alma Road Windsor SL4 3EU

L shaped rear dormer with Juliette balcony, new solar panels and alterations to ...

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Important details

Council
Windsor and Maidenhead
Application type
Full
Postcode
SL4 3DR
Received
6 Oct 2026
Validated
20 Oct 2026
Ward
Clewer East
Parish
Windsor Unparished
Target decision
14 Dec 2026
Applicant
Show
Agent
Show

Decision outlook

Day 8 of the 56-day target. Windsor and Maidenhead usually decides demolitions by day 54.

Day 848 days to the 56-day target
77%decided within 8 weeks
75%approved
198decided in the last year

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

Consultation & key dates

Alt. reference
PP-15268994
Planning Portal ref
PP-15268994
Comments by
17 Nov 2026
Statutory expiry
14 Dec 2026
Env. assessment
No

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2024 Approved
216 St Leonards Road Windsor SL4 3DL
New drop kerb and EV Charging point.
24/02493/FULL
2024 Approved
5 Bulkeley Avenue Windsor SL4 3LR
Single storey front extension, single storey rear extension, canopy to rear and alteratio…
24/02230/FULL
2024 Approved
243 St Leonards Road Windsor SL4 3DR
Single storey side/rear extension with canopy, raised rear terrace, pergola and the insta…
24/00923/FULL
2018 Withdrawn
207 St Leonards Road Windsor SL4 3DR
Two storey side and part two, part single storey rear extension following the demolition…
18/03181/FULL
2022 Approved
12 Bulkeley Avenue Windsor SL4 3LP
Single storey front/side extension and alterations to fenestration to include x3 roofligh…
22/02715/FULL
2022 Approved
267 St Leonards Road Windsor SL4 3DR
Alterations to the garage to include a garage conversion, single storey extension to the…
22/01128/FULL
2021 Approved
285 St Leonards Road Windsor SL4 3DR
Single storey rear extension and enlargement of x1 existing rear rooflight, following dem…
21/00261/FULL
2020 Approved
225A St Leonards Road Windsor SL4 3DR
Subdivision of the existing flat into x2 self-contained flats, x2 front rooflights, x1 se…
20/03528/FULL
2020 Approved
The Duke of York 198 St Leonards Road Windsor SL4 3DL
Mixed use redevelopment comprising a convenience store (Use Class E) and 5no. residential…
20/03262/FULL
2020 Approved
225A St Leonards Road Windsor SL4 3DR
x2 front rooflights, x1 second floor side window and x1 rear L-shaped dormer with juliet…
20/00879/FULL
2020 Withdrawn
The Duke of York 198 St Leonards Road Windsor SL4 3DL
Mixed use development comprising of a Convenience Store (A1) and 6no. residential flat's…
20/00663/FULL
2020 Approved
9 Bulkeley Avenue Windsor SL4 3LR
Single storey rear extension no greater than 3.79m depth, 3.55m high and an eaves height…
20/00858/PDXL
2019 Refused
237 St Leonards Road Windsor SL4 3DR
Second floor rear extension & rear dormer to facilitate a loft conversion.
19/01982/FULL
2018 Approved
4 Bulkeley Avenue Windsor SL4 3LP
Single storey rear extension
18/01346/FULL
2018 Approved
259 St Leonards Road Windsor SL4 3DR
Rear L shaped dormer, 2 no. rooflights to front and 1no. rooflight to the rear and a Juli…
18/00911/FULL
2018 Refused
259 St Leonards Road Windsor SL4 3DR
Single story rear extension, rear L shaped dormer, 2 no. front rooflights and Juliette ba…
18/00025/FULL
2018 Approved
267 St Leonards Road Windsor SL4 3DR
Rear L shaped dormer with Juliette balcony and 2 no. front rooflights.
18/00002/FULL
2018 Approved
269 St Leonards Road Windsor SL4 3DR
Rear L shaped dormer with Juliette balcony and 2 no. front rooflights.
18/00001/FULL
2017 Approved
245 St Leonards Road Windsor SL4 3DR
Single storey rear extension.
17/03442/FULL
2017 Approved
The Duke of York 198 St Leonards Road Windsor SL4 3DL
Class A: Change of use to use the ground floor and ancilliary outbuilding of the Duke of…
17/00493/CLASSM
2016 Withdrawn
The Duke of York 198 St Leonards Road Windsor SL4 3DL
Mixed use development comprising an A1- Convenience Store, 7 no. flats with associated ac…
16/03876/FULL
2016 Approved
245 St Leonards Road Windsor SL4 3DR
Single storey rear conservatory.
16/00878/FULL
2016 Approved
253 St Leonards Road Windsor SL4 3DR
Erection of detached garage and carport to rear
16/00177/FULL
2025 Approved
The Duke Of York 198 St Leonards Road Windsor
Details required by Condition 17 (Lighting Scheme) of planning permission 20/03262/FULL f…
25/01746/CONDIT
2025 Approved
237 St Leonards Road Windsor SL4 3DR
Certificate of lawfulness to determine whether the proposed loft conversion with rear L-s…
25/00095/CPD
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
Source: MHCLG planning statistics · See full council rankings

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.