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Planning application

11 Tanglyn Avenue Shepperton TW17 0AD

Granted Spelthorne 25/01284/CPD Cert. of Lawful Proposed Use and Dev

Works: Loft or dormer

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Certificate of Lawfulness for the proposed development of a loft conversion to include the installation of a rear facing dormer.

As published by the council, reference 25/01284/CPD

Application record

Reference
25/01284/CPD
Type
Cert. of Lawful Proposed Use and Dev
Status
Decided
Decision
Granted As published: Grant Cert Lawful Prop Use/Dev
Received
22 Oct 2025
Validated
22 Oct 2025
Decided
4 Dec 2025
Ward
Laleham And Shepperton Green
Parish
Laleham And Shepperton ED
Decision by
Delegated Decision
Postcode
TW17 0AD

Site history

Applications at this address on the Spelthorne register

This site has had 2 applications since 2024: 2 approved, 0 refused.

  • 24/01415/HOU Granted

    11 Tanglyn Avenue Shepperton TW17 0AD

    Erection of a single storey side extension.

    Decided 14 Jan 2025 Householder

Timeline

Dates from the published record

  1. 22 Oct 2025

    Received by Spelthorne

  2. 4 Dec 2025

    Decision issued: Grant Cert Lawful Prop Use/Dev

  3. 11 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

AJT Design Services Ltd Agent, a design practice registered in Sunbury-On-Thames

Active · incorporated 2004 · Sunbury-On-Thames

102 applications on PlanIndex · across 13 councils · 97% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

Plans, drawings, consultee responses and the officer's report

9 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

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What this grant of permission means

Spelthorne granted permission on 4 December 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

About lawful development applications

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 11 Tanglyn Avenue Shepperton TW17 0AD

    24/01415/HOU Submitted 27 Nov 2024 50 yards away

    Erection of a single storey side extension.

    Granted Householder Extension 9 docs
    Small domestic

  • 5 Tanglyn Avenue Shepperton TW17 0AD

    25/01357/HOU Submitted 10 Nov 2025 50 yards away

    Erection of a part two storey, part single storey side and rear extension

    Granted Householder Extension 7 docs
    Small domestic

  • 26 Tanglyn Avenue Shepperton TW17 0AE

    25/01035/HOU Submitted 20 Aug 2025 150 yards away

    Erection of a single storey rear extension (following demolition of existing conservatory)

    Granted Householder Extension Demolition 10 docs
    Small domestic

  • Grassed Verge Of Southwest Side Of Laleham Road Shepperton Surrey TW17 0AH

    26/00906/T56 Submitted 27 Aug 2026 200 yards away

    The proposed works comprise the installation of a 20m monopole supporting 6 no. antennas, 2 no. 300mm transmission dishes and 3 no. equipment cabinets and ancillary development there to including 3 no. remote radio heads (RRHs). As shown on drawing no's: 100 rev A; 200 rev A; 201 rev A; 300 rev A; 301 rev A received 27.08.2026.

    Decided 33 docs

  • 11 Acacia Avenue Shepperton TW17 0AZ

    22/01648/FUL Submitted 30 Nov 2022 200 yards away

    Erection of double side extension and part single / part two storey rear extension and conversion into 2 flats

    Granted Full applications New dwelling Extension 14 docs
    Several homes

  • 11 Acacia Avenue Shepperton TW17 0AZ

    25/01217/CPD Submitted 6 Oct 2025 200 yards away

    Certificate of Lawfulness for the proposed change of use from a C3 dwellinghouse to a 5 person (C4) HMO. Associated internal alterations.

    Granted Lawful development 8 docs
    Domestic

In Spelthorne

  • 26/00916/CPD Awaiting decision

    9 Alexandra Road Ashford TW15 1TW

    Certificate of Lawfulness for proposed conversion of roof space into habitable room, to include a rear dormer and conversion of roof from hip to gable end and 2 no roof lights on front of roof.

    Received 31 Aug, published by the council 9 Sep 2026 Lawful development
  • 26/00913/CPD Awaiting decision

    Engenica House Wraysbury Reservoir Coppermill Road TW19 5NW

    Certificate of lawfulness for proposed extension of existing car park

    Received 28 Aug, published by the council 7 Sep 2026 Lawful development
  • 26/00452/CLD Granted

    177A Feltham Road Ashford TW15 1BB

    Certificate of Lawfulness for existing use of the ground floor flat as a small HMO (Use Class C4)

    Received 4 May, published by the council 30 Jul 2026 Lawful development
  • 26/00200/CLD Granted

    73 Nursery Gardens Staines-upon-Thames TW18 1EL

    Certificate of Lawfulness to establish the lawful use of the property is as a House in Multiple Occupation (Use Class C4) for up to six occupants. As shown on site location plan and block plan no EX-1003 and Pre-Existing Floor Plans (Page 01 of 02) and Existing Floor Plans (Page 02 of 02) received 27.02.2026.

    Received 26 Feb, published by the council 30 Jul 2026 Lawful development
  • 26/00383/CPD Refused

    13 Meadow Road Ashford TW15 1PL

    Certificate of lawfulness for proposed change of use from a 6 Person HMO (Class C4) to a 7 Person HMO (Sui-Generis)

    Received 14 Apr, published by the council 30 Jul 2026 Lawful development