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163 Arthur Road Windsor SL4 1RZ

26/01781/CPDCert of Lawfulness of Proposed DevRefused
Outline / PiP

Refused on 11 September 2026

Council decision: Refuse

Approximate site (title boundary)
Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

Certificate of lawfulness to determine whether the proposed rear L shaped dormer with Juliet balcony and new air source heat pump are lawful.

Received
21 July 2026
Public comments
0 · last counted 3 October 2026
Ward
Eton And Castle
  1. Received21 Jul
  2. Validated21 Jul
  3. Consult.
  4. Target14 Sep
  5. Decided11 Sep

Decided in 52 days (council typically 56)

About this application

This is an outline application for a dormer extension at 163 Arthur Road Windsor SL4 1RZ. Windsor has handled 644 applications of this type. This one was decided in 52 days, 4 days quicker than Windsor's typical decision time. The site is in a conservation area. There have been 3 other applications at this address. In the past year there have been 103 applications across Eton And Castle. We hold 1,028 applications in total for the SL4 postcode area.

67% of outline applications at Royal Borough of Windsor and Maidenhead were approved. Across all application types, the council typically decides in about 8 weeks (median).

Based on decided applications received in the last 3 years.See what's approved near your address

Application details

Postcode
SL4 1RZ
Application type
Cert of Lawfulness of Proposed Dev
Scale / size
Small
Parish
Windsor Unparished

Planning application dates

Date validated
21 July 2026
Target decision date
14 September 2026

Applicant and agent

Agent address
Fluent ADS Ltd Elmbrook House 18 -19 Station Road Sunbury On Thames TW16 6SB

Planning decision

Statutory period
55 days

Additional information

Planning Portal ID
PP-15099345
Documents
14

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 3: High probability (rivers and sea)

Not published by this council, so not checked: conservation areas, Article 4 directions and tree preservation orders. Ask the council if these matter.

Also checked, none recorded (21)

flood storage areas, listed buildings, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Associated applications

  1. 2026
    21 Jul

    Certificate of lawfulness to determine whether the proposed rear L shaped dormer with Juliet balcony and new…

    This applicationRefusedOutline26/01781/CPD
  2. 2026
    21 Jul

    Single storey rear extension.

    PendingFullFiled alongside26/01782/FULL

Source: Windsor

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