Great Park House 4 Queen Annes Road Windsor SL4 2BJ Data via plota.co.uk

26/00549/NMA - Non-material Amendment Refused
Admin / procedural

Proposal

Non material amendments to planning permission for the addition of external insulation to chimney breast and garage walls and insulated garage doors, alterations to various windows on ground and first floor level, changes to rear dormers from 2no. dormers to 3no. dormers, alterations to roof dormer, rooflight and PV array configuration. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
2 Mar 2026
✗
Refused
30 Mar 2026
Appeal
Not lodged

Refused on 30 Mar 2026 · Delegated · Last checked 7 Jul 2026

Documents 3

Decision & officer reports 1

PDF Refusal nma Councils Decision · 30 Mar 2026 View ↗

Other documents 2

PDF History log Property History · 6 Mar 2026 View ↗ PDF Applicationformredacted Application Forms · 27 Feb 2026 View ↗

All documents on the council site ↗

Associated applications 4

Site constraints 7

Special area of conservation 35 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.
SSSI 35 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.
Registered park or garden 35 m away: The Royal Estate, Windsor: Windsor Great Park
Its setting is a consideration for work nearby.
Registered parks and gardens, battlefields, world heritage sites and protected wrecks are designated heritage assets: harm needs clear and convincing justification.
Historic England ↗
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Inside the Windsor built-up area; Green belt 35 m away: London; Priority habitat 22 m away: No main habitat but additional habitats present.
Not affected
Outside flood zones 2 and 3 · No listed building at the site · No scheduled monument at the site

Checked on 6 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 3

Last sold for £1,300,000 in August 2006. Detached house, leasehold.

18 August 2006£1,300,000
14 March 1997£500,000
15 April 1996£470,000

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

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Important details

Council
Windsor and Maidenhead
Application type
Non-material Amendment
Postcode
SL4 2BJ
Received
2 Mar 2026
Validated
2 Mar 2026
Ward
Old Windsor
Parish
Windsor Unparished
Case officer
Show
Target decision
30 Mar 2026
Decision
Refuse
Decision date
30 Mar 2026
Decision level
Delegated
Applicant
Show
Agent
Show

Consultation & key dates

Alt. reference
PP-14742020
Planning Portal ref
PP-14742020
Statutory expiry
30 Mar 2026
Env. assessment
No

Historical activity at this location

14 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2024 Approved
New roof with PV panels to rear, replacement flat roofs to dormers, front bay window and…
24/02695/FULL
2023 Withdrawn
Certificate of lawfulness to determine whether the proposed alterations to external walls…
23/03128/CPD
Within ~100m

Nearby activity

2021 Approved
92 Wood Close Windsor SL4 3LA
Single storey rear extension no greater than 5.00m in depth, 3.00m high with an eaves hei…
21/02775/PDXL
2019 Approved
90 Wood Close Windsor SL4 3LA
Variation (under Section 73A) of Condition 3(Approved Plans) to substitute those plans ap…
19/03597/VAR
2018 Approved
11 Queen Annes Road Windsor SL4 2BJ
Certificate of lawfulness to determine whether the proposed single storey outbuilding is…
18/01830/CPD
2018 Approved
90 Wood Close Windsor SL4 3LA
2 x single storey front extensions, two storey side and single storey rear extensions
18/01448/FULL
2017 Approved
11 Queen Annes Road Windsor SL4 2BJ
See tree survey schedule to tree condition report from Crown Consultants.
17/03921/TPO
2017 Approved
82 Wood Close Windsor SL4 3LA
Single storey rear extension (part retrospective)
17/02451/FULL
2017 Approved
11 Queen Annes Road Windsor SL4 2BJ
Non material amendment to planning permission 16/01458/VAR for reduction in height of two…
17/01657/NMA
2017 Withdrawn
2 Queen Annes Road Windsor SL4 2BJ
Outline application for Access, Layout and Scale only to be considered at this stage with…
17/00784/OUT
2016 Approved
11 Queen Annes Road Windsor SL4 2BJ
Detached dwelling following demolition of the existing as approved under planning permiss…
16/01458/VAR
2016 Approved
11 Queen Annes Road Windsor SL4 2BJ
Details required by conditions 2 (materials), 3 (finished levels), 4 (sustainability), 10…
16/01086/CONDIT
2016 Approved
11 Queen Annes Road Windsor SL4 2BJ
Non material amendment to planning permission 13/01859 to list the approved drawings as a…
16/01204/NMA
2016 Refused
11 Queen Annes Road Windsor SL4 2BJ
Non material amendment to planning permission 13/01859 to change the elevational appearan…
16/01111/NMA
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.