20, Alderbury Road, Slough, SL3 8DQ
Refused on 20 April 2026
Council decision: Refusal CLU/D;InformativesDelegated (officer decision)
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
Lawful development certificate for a proposed loft conversion with rear dormer and 2no front roof lights
- Received
- 26 January 2026
- Decision level
- Delegated (officer decision)
- Council
- Slough Borough Council
- Ward
- Langley St. Marys
- ReceivedReceived26 Jan
- ValidatedValidated26 Jan
- Consult.Consultation
- TargetTarget Date23 Mar
- DecidedDecided20 Apr
Decided in 84 days (council typically 56)
About this application
This is an outline application for a loft conversion at 20, Alderbury Road, Slough, SL3 8DQ. Slough has handled 1,136 applications of this type. This one was decided in 84 days, 4 weeks longer than Slough's typical decision time. There have been 3 other applications at this address. In the past year there have been 78 applications across Langley St. Marys. We hold 2,642 applications in total for the SL3 postcode area.
79% of outline applications at Slough Borough Council 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
- SL3 8DQ
- Application type
- Certificate Proposed (Use/Development)
- Scale / size
- Medium
- District
- East
Planning application dates
- Date validated
- 26 January 2026
- Target decision date
- 23 March 2026
- Application expires
- 11 May 2026
Planning decision
- Statutory period
- 105 days
Publicity
- First advertised
- 26 January 2026
- Site notice start
- 26 January 2026
Additional information
- Planning Portal ID
- PP-14315983
- UPRN
- 100080305865
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: Article 4 directions. Ask the council if these matter.
Possibly incomplete for this council: tree preservation orders.
Also checked, none recorded (22)
flood storage areas, conservation 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.
Planning history at this site
3 other applications at this property, newest first.
- 202621 Oct
Construction of single storey rear extension.
PendingFull PlanningP/03387/005 - 20263 Aug
Lawful development certificate for an existing loft conversation with rear dorme
ApprovedCertificate Existing (Use/Development)P/03387/004 - 20262 Jun
Lawful Development Certificate for the existing use of a loft conversation to cr
RefusedCertificate Existing (Use/Development)P/03387/003
Source: Slough
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Around this site
Nearby applications
- 20, Alderbury Road, Slough, SL3 8DQP/03387/005 · FullAwaiting decision0.0 mi
- 10, Alderbury Road, Langley, Slough, SL3 8DQP/14609/001 · OutlineApproved0.0 mi
- Langley Park, Waterside Drive, Slough, SL3 6ADTPO/2026/3 · TreesApproved0.1 mi
- Langley Park, Waterside Drive, Slough, SL3 6ADTPO/2021/30 · TreesApproved0.1 mi
- 50, Alderbury Road, Slough, SL3 8DJP/10276/001 · OutlineApproved0.1 mi
For applicants and trades
Contractors near this project
Find contractors for loft conversions near this site- Lynford homesVerifiedBuckinghamshireNew Builds6.2 mi
- R P Bray Electrical Contractors LtdElectrician0.2 mi
- CITI Electrics LtdElectrician0.3 mi
- Virdee Electro-Engineering LtdElectrician0.4 mi
Planning something similar?
See what the council approved and refused for loft conversions and dormers on your street. Pick your home and get the evidence before you pay for drawings.