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12 Castleton Court Marlow Buckinghamshire SL7 3HW

22/05021/CLPCertificate of Lawfulness - Proposed UseApproved
Outline / PiP

Approved on 1 March 2022

Council decision: Grant Certificate - Proposed 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 for proposed construction of 1 x dormer window to rear and insertion of 1 x rooflight to front roofslope in connection with conversion of existing loftspace to habitable accommodation

Received
6 January 2022
Decision level
Delegated (officer decision)
Council
Wycombe
Ward
Former Marlow
  1. Received6 Jan
  2. Validated6 Jan
  3. Consult.
  4. Target3 Mar
  5. Decided1 Mar

Decided in 54 days (council typically 63)

About this application

This is an outline application for a dormer extension at 12 Castleton Court Marlow Buckinghamshire SL7 3HW. Wycombe has handled 1,057 applications of this type. This one was decided in 54 days, 9 days quicker than Wycombe's typical decision time. The site is in 1 listed building nearby. There has been 1 other application at this address. We hold 2,774 applications in total for the SL7 postcode area.

76% of outline applications at Wycombe were approved. Across all application types, the council typically decides in about 9 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
SL7 3HW
Application type
Certificate of Lawfulness - Proposed Use
Scale / size
Small
Parish
Marlow Town Council

Planning application dates

Date validated
6 January 2022
Target decision date
3 March 2022

Applicant and agent

Agent address
Unit 1 Saturn House Calleva Park Aldermaston Reading RG7 8HA

Planning decision

Statutory period
56 days

Additional information

Planning Portal ID
PP-10521616
Documents
6

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (24)

flood storage areas, conservation areas, listed buildings, Article 4 directions, tree preservation orders, 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: Wycombe

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