11 Tanglyn Avenue Shepperton TW17 0AD
Approved on 4 December 2025
Council decision: Grant Cert Lawful Prop Use/DevDelegated (officer decision)
Proposal
Certificate of Lawfulness for the proposed development of a loft conversion to include the installation of a rear facing dormer.
- Received
- 22 October 2025
- Decision level
- Delegated (officer decision)
- Council
- Spelthorne Borough Council
- Ward
- Laleham And Shepperton Green
- Agent
- AJT Design Services Ltd
- ReceivedReceived22 Oct
- ValidatedValidated22 Oct
- Consult.Consultation19 Nov
- TargetTarget Date17 Dec
- DecidedDecided4 Dec
Decided in 43 days (council typically 56)
About this application
This is an outline application for a loft conversion at 11 Tanglyn Avenue Shepperton TW17 0AD. Spelthorne has handled 482 applications of this type. This one was decided in 43 days, 13 days quicker than Spelthorne's typical decision time. There has been 1 other application at this address. In the past year there have been 26 applications across Laleham And Shepperton Green. We hold 619 applications in total for the TW17 postcode area.
88% of outline applications at Spelthorne 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
- TW17 0AD
- Application type
- Cert. of Lawful Proposed Use and Dev
- Scale / size
- Small
- Parish
- Laleham And Shepperton ED
Planning application dates
- Date validated
- 22 October 2025
- Consultation expiry
- 19 November 2025
- Last date for comments
- 19 November 2025
- Target decision date
- 17 December 2025
Applicant and agent
- Agent
- AJT Design Services Ltd
- Architect profile
- AJT DESIGN SERVICES LTD
- Agent address
- 9 Queensway Sunbury-on-Thames TW16 6HA
Planning decision
- Statutory period
- 56 days
Publicity
- Last advertised
- 29 October 2025
- Advertisement expiry
- 19 November 2025
Site constraints
Designations that overlap or adjoin the site outline.
- Flood zone 2: Medium probability (rivers and sea)
- Green belt: SpelthornePart of the site
Also checked, none recorded (23)
flood storage areas, conservation areas, listed buildings, Article 4 directions, tree preservation orders, 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
1 other application at this property, newest first.
Source: Spelthorne
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Around this site
Nearby applications
- 11 Tanglyn Avenue Shepperton TW17 0AD24/01415/HOU · FullApproved0.0 mi
- 13 Tanglyn Avenue Shepperton TW17 0AD25/00059/HOU · FullApproved0.0 mi
- 13 Tanglyn Avenue Shepperton TW17 0AD20/01149/HOU · FullApproved0.0 mi
- 17 Tanglyn Avenue Shepperton TW17 0AD19/01280/HOU · FullApproved0.0 mi
- 7 Tanglyn Avenue Shepperton TW17 0AD23/00509/HOU · FullApproved0.0 mi
For applicants and trades
Contractors near this project
Find contractors for loft conversions near this site- I L G Electrical InstallationsElectrician0.3 mi
- Construct Electric LtdElectrician0.3 mi
- HG Pro Ltd0.3 mi
- C J Howard Electrical Contractors LElectrician0.4 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.