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46 Thames Crescent Maidenhead SL6 8EY

26/00314/CPDCert of Lawfulness of Proposed DevApproved
Outline / PiP

Approved on 17 February 2026

Council decision: Permitted DevelopmentDelegated (officer decision)

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 single storey rear/side extension is lawful.

Received
5 February 2026
Decision level
Delegated (officer decision)
Ward
Riverside
  1. Received5 Feb
  2. Validated5 Feb
  3. Consult.
  4. Target2 Apr
  5. Decided17 Feb

Decided in 12 days (council typically 56)

About this application

This is an outline application for a side extension at 46 Thames Crescent Maidenhead SL6 8EY. Windsor has handled 644 applications of this type. This one was decided in 12 days, 6 weeks quicker than Windsor's typical decision time. The site is in a conservation area. There are no previous applications recorded at this address. In the past year there have been 31 applications across Riverside. We hold 2,115 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.See what's approved near your address

Application details

Postcode
SL6 8EY
Application type
Cert of Lawfulness of Proposed Dev
Scale / size
Small
Parish
Maidenhead Unparished

Planning application dates

Date validated
5 February 2026
Target decision date
2 April 2026

Applicant and agent

Agent address
Arkiplan Architectural Ltd House 13 Freeland Park Lytchett Wareham Road BH16 6FA United Kingdom

Planning decision

Statutory period
56 days

Additional information

Planning Portal ID
PP-14662762
Documents
8

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.

Source: Windsor

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