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Planning application

10 Dorset Road Ashford TW15 3BY

Refused Spelthorne 23/00235/CPD Cert. of Lawful Proposed Use and Dev

Works: Extension Loft or dormer

Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.

Proposal

Certificate of Lawfulness for the proposed loft conversion, facilitated by a hip to gable extension and a rear dormer. Insertion of 3 no. rooflights on the front roof slope.

As published by the council, reference 23/00235/CPD

Application record

Reference
23/00235/CPD
Type
Cert. of Lawful Proposed Use and Dev
Status
Decided (Refused)
Decision
Refuse Cert Lawful Prop Use/Dev
Received
24 Feb 2023
Validated
24 Feb 2023
Decided
29 Mar 2023
Ward
Ashford North And Stanwell South
Parish
Staines South And Ashford West ED
Decision by
Delegated Decision
Postcode
TW15 3BY

Timeline

Dates from the published record

  1. 24 Feb 2023

    Received by Spelthorne

  2. 29 Mar 2023

    Decision issued: Refuse Cert Lawful Prop Use/Dev

  3. 30 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

4D Architects Agent, an architecture practice registered in Surbiton

Active · incorporated 2011 · Surbiton

14 applications on PlanIndex · across 9 councils · 82% granted

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Documents

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

11 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 refusal means

Spelthorne refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. 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 500 metres

  • 18 Dorset Road Ashford TW15 3BY

    21/01267/CPD Submitted 2 Aug 2021 35m away

    Certificate of Lawfulness for proposed development of a single storey rear extension following the demolition of the existing conservatory.

    Granted Lawful development Extension Demolition 10 docs
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  • 3A Dorset Road Ashford TW15 3BZ

    25/01416/PDH Submitted 25 Nov 2025 53m away

    Prior Approval Notification for a single storey rear extension extending 8 metres beyond the rear wall of the original dwellinghouse, with a maximum height of 3 metres and eaves height of 2.81 metres. (As shown on plans AH735 01, AH735 02, AH735 03 received 25.11.2025)

    Granted Prior approval Extension 11 docs
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  • 3A Dorset Road Ashford TW15 3BZ

    26/00212/HOU Submitted 3 Mar 2026 53m away

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    Granted Householder Extension Windows or glazing 41 docs
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  • 8A Cumberland Road Ashford TW15 3BX

    26/00405/CPD Submitted 20 Apr 2026 64m away

    Certificate of Lawfulness for proposed change of use from Class C4 (small HMO) to a residential home for up to 2 no. young people to receive care on site.

    Granted Lawful development 10 docs

  • 8 Cumberland Road Ashford TW15 3BX

    26/00086/CPD Submitted 30 Jan 2026 64m away

    Certificate of lawfulness for proposed use of dwellinghouse (Use Class C3a) as a residential home for up to 2 no. young people.

    Granted Lawful development 10 docs
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  • 8 Cumberland Road Ashford TW15 3BX

    21/00938/FUL Submitted 4 Jun 2021 65m away

    Demolition of existing detached bungalow following the erection of 2 no. semi detached bungalows with habitable loft space and single storey rear elements to create 2 no residential units with associated parking, amenity space, cycle and bin storage. The creation of a new vehicle access.

    Granted Full applications Demolition 23 docs
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In Spelthorne

  • 26/00452/CLD Granted

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

    4 May 2026 Lawful development
  • 26/00200/CLD Granted

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    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.

    26 Feb 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)

    14 Apr 2026 Lawful development
  • 26/00437/CLD Refused

    4 Sunmead Road Sunbury-on-Thames TW16 6PE

    Certificate of Existing Lawfulness for the conversion of a C3 dwellinghouse to a C4 small 6-person HMO.

    28 Apr 2026 Lawful development
  • 26/00575/CLD Refused

    96 Groveley Road Sunbury-on-Thames TW16 7LB

    Certificate of Lawfulness for an existing development and use for a ground floor rear extension, roof alterations including a rear roof dormer and a hip to gable conversion with insertion of rooflights, and use as a small HMO (use class C4)

    2 Jun 2026 Lawful development