1 Grange Lane Cookham Maidenhead SL6 9RP
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
1No. single storey rear extension and 1No. single storey side/rear extension no greater than 8.00m in depth, 3.50m high with an eaves height of 2.50m.
- Received
- 3 August 2026
- Decision due
- 13 September 2026
- Ward
- Bisham And Cookham
- ReceivedReceived3 Aug
- ValidatedValidated3 Aug
- Consult.Consultation24 Aug
- TargetTarget Date13 Sep
- DecidedDecided
About this application
This is an outline application for a single storey rear extension at 1 Grange Lane Cookham Maidenhead SL6 9RP. Windsor has handled 644 applications of this type. It has been with the council since 3 August 2026 and is still awaiting a decision. The site is in a conservation area. There have been 4 other applications at this address. In the past year there have been 129 applications across Bisham And Cookham. We hold 2,124 applications in total for the SL6 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.Planning something similar? See what gets approved on your street
Application details
- Postcode
- SL6 9RP
- Application type
- Permitted Development Extended
- Scale / size
- Small
- Parish
- Cookham Parish
Planning application dates
- Date validated
- 3 August 2026
- Consultation expiry
- 24 August 2026
- Neighbour consultation end
- 24 August 2026
- Last date for comments
- 24 August 2026
Applicant and agent
- Agent address
- DP Architects The Old Brewery Tap 3 Shirburn Street Watlington OX49 5BU
Planning decision
- Statutory period
- 41 days
Additional information
- Planning Portal ID
- PP-15118368
- Documents
- 9
Site constraints
Designations that overlap or adjoin the site outline.
- Green belt: Windsor and Maidenhead
- 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 (20)
flood storage areas, listed buildings, 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.
Planning history at this site
4 other applications at this property, newest first.
- 202630 Apr
1no. single storey rear extension and 1no. single storey side/rear extension no greater than 8.00m in depth…
PendingPermitted Development Extended26/01067/PDXL - 202610 Mar
Certificate of lawfulness to determine whether the proposed two storey rear extension is lawful.
ApprovedCert of Lawfulness of Proposed Dev26/00633/CPD - 202610 Mar
2no. single storey side/rear extensions no greater than 8.00m in depth, 3.50m high with an eaves height of…
PendingPermitted Development Extended26/00634/PDXL - 202610 Mar
Single storey rear extension no greater than 8.00m in depth, 3.50m high with an eaves height of 2.50m.
PendingPermitted Development Extended26/00632/PDXL
Source: Windsor
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Around this site
Nearby applications
- 1 Grange Lane Cookham Maidenhead SL6 9RP26/00633/CPD · OutlineApproved0.0 mi
- 1 Grange Lane Cookham Maidenhead SL6 9RP26/01067/PDXL · OutlineAwaiting decision0.0 mi
- 1 Grange Lane Cookham Maidenhead SL6 9RP26/00634/PDXL · OutlineAwaiting decision0.0 mi
- 1 Grange Lane Cookham Maidenhead SL6 9RP26/00632/PDXL · OutlineAwaiting decision0.0 mi
- 2 Grange Lane Cookham Maidenhead SL6 9RP26/00982/CPD · OutlineAwaiting decision0.0 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Lynford homesVerifiedBuckinghamshireNew Builds7.9 mi
- Country Stoves (Cookham) LtdSolid Fuel Heating0.4 mi
- Tom Williams Electrical LtdElectrician0.5 mi
- SLM Property Solutions LtdHeating ControlsAir Source Heat Pump0.7 mi
Planning something similar?
See what the council approved and refused for wrap-around (side and rear) extensions on your street. Pick your home and get the evidence before you pay for drawings.