Erinmore The Avenue Ascot SL5 7NB
Approved on 23 April 2026
Council decision: Application PermittedDelegated (officer decision)5 conditions
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
New front porch, first floor front extension, 1no. front dormer, 3 no. rear dormers, 2no. rear Juliet balconies, raising of the eaves and ridge, enlargement of the existing roof space, new pitched roofs to the single storey side elements, 1no. rear canopy and alterations to fenestration.
- Received
- 2 March 2026
- Decision level
- Delegated (officer decision)
- Ward
- Ascot & Sunninghill
- ReceivedReceived2 Mar
- ValidatedValidated6 Mar
- Consult.Consultation6 Apr
- TargetTarget Date1 May
- DecidedDecided23 Apr
Decided in 48 days (council typically 56)
About this application
This is a full planning application for a dormer extension at Erinmore The Avenue Ascot SL5 7NB. Windsor has handled 1,391 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, with 1 listed building nearby. There are no previous applications recorded at this address. In the past year there have been 92 applications across Ascot & Sunninghill. We hold 1,445 applications in total for the SL5 postcode area.
68% of full 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
- SL5 7NB
- Application type
- Full
- Scale / size
- Small
- Parish
- Sunninghill And Ascot Parish
Planning application dates
- Date validated
- 6 March 2026
- Consultation expiry
- 6 April 2026
- Neighbour consultation end
- 6 April 2026
- Last date for comments
- 6 April 2026
- Target decision date
- 1 May 2026
Applicant and agent
- Agent address
- Hewitt Architecture And Planning 11 Richmond Court High Wycombe Buckinghamshire HP13 6DZ
Planning decision
- Statutory period
- 56 days
Additional information
- Planning Portal ID
- PP-14721388
- Documents
- 18
Site constraints
Designations that overlap or adjoin the site outline.
- Flood zone 1: Low 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.
Source: Windsor
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Around this site
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For applicants and trades
For the applicant
Need a drainage scheme? Drainage & flood risk consultants near this site
Condition 3 on the decision asks for this.
- 9.2 miWoking
- 11.3 miUxbridge
- 13.2 miGuildford
Nearest first, within 25 miles of the site. Every firm is listed free.
Contractors near this project
Find contractors for extensions near this site- A F MaintenanceElectrician0.2 mi
- A.S Roofing and Leadworks0.2 mi
- TGF Electrical ContractorsElectrician0.4 mi
- Birch Hill Developments LimitedWindsorSmart HomeGreen Energy Management0.6 mi
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