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Planning application

18 Cardington Square, Hounslow, TW4 6AH

Granted Hounslow P/2026/0695 Lawful Development Certificate (Proposed)

Works: Extension Loft or dormer Windows or glazing

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

Proposal

Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion and front roof windows.

As published by the council, reference P/2026/0695

Application record

Reference
P/2026/0695
Type
Lawful Development Certificate (Proposed)
Status
Decided: GRANT
Decision
Granted As published: GRANT
Received
2 Mar 2026
Validated
2 Mar 2026
Decided
20 Apr 2026
Ward
Hounslow West
Postcode
TW4 6AH

Site history

Applications at this address on the Hounslow register

This site has had 3 applications since 2026: 3 approved, 0 refused.

  • P/2026/1410 Granted

    18 Cardington Square, Hounslow, TW4 6AH

    Erection of roof extension and a two storey side and single storey rear extension to the house. Following the demolition of the garage.

    Decided 20 Aug 2026 Householder
  • PA/2026/0696 Granted

    18 Cardington Square, Hounslow, TW4 6AH

    Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 2.85 metres high to the eaves.

    Decided 31 Mar 2026 Prior approval

Timeline

Dates from the published record

  1. 2 Mar 2026

    Received by Hounslow

  2. 20 Apr 2026

    Decision issued: GRANT

  3. 12 Aug 2026

    Added to PlanIndex

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.

Watch members (£5 a month) open the document list from here.

Open the documents

What this grant of permission means

Hounslow granted permission on 20 April 2026, 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

  • 18 Cardington Square, Hounslow, TW4 6AH

    P/2026/1410 Submitted 11 May 2026 50 yards away

    Erection of roof extension and a two storey side and single storey rear extension to the house. Following the demolition of the garage.

    Granted Householder Extension Demolition 16 docs
    Small domestic

  • 18 Cardington Square, Hounslow, TW4 6AH

    PA/2026/0696 Submitted 2 Mar 2026 50 yards away

    Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 2.85 metres high to the eaves.

    Granted Prior approval Extension 9 docs

  • 16 Cardington Square, Hounslow, TW4 6AH

    P/2026/0692 Submitted 2 Mar 2026 50 yards away

    Certificate of lawfulness for proposed hip-to-gable conversion and rear roof extension with two front roof windows. Erection of outbuilding in rear garden for use as garden storage, office and gym.

    Granted Lawful development Extension Loft or dormer +1 9 docs

  • 16 Cardington Square, Hounslow, TW4 6AH

    PA/2026/0693 Submitted 2 Mar 2026 50 yards away

    Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 2.85 metres high to the eaves.

    Granted Prior approval Extension 8 docs

  • 26 Cardington Square, Hounslow, TW4 6AH

    P/2024/3253 Submitted 28 Sep 2024 50 yards away

    Certificate of Lawfulness for the proposed erection of a rear roof extension with hip to gable conversion and front roof windows to the house.

    Granted Lawful development Extension Loft or dormer +1 8 docs

  • 154 CARDINGTON SQUARE, HOUNSLOW, TW4 6AL

    PA/2023/1097 Submitted 5 Apr 2023 100 yards away

    Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 3.00 metres high to the eaves

    Granted Prior approval Extension 6 docs

In Hounslow

  • P/2026/2813 Awaiting decision

    150 Wood Lane, Isleworth, TW7 5EQ

    (GSGS877009741) Certificate of lawfulness proposed for the erection of a single storey outbuilding to be used as a home gym / playroom / shed in the rear garden of the house

    Received 5 Oct, published by the council 9 Oct 2026 Lawful development
  • P/2026/2334 Granted

    69 Central Avenue, Hounslow, TW3 2QW

    Certificate of lawfulness for the proposed hip to gable conversion and erection of rear roof extension with three front roof windows to the house.

    Received 12 Aug, published by the council 16 Aug 2026 Lawful development
  • P/2026/2459 Granted

    2 Letchworth Avenue, Feltham, TW14 9RY

    Certificate of Lawfulness for the proposed hip to gable roof conversion, installation of two front roof windows, and erection of a rear roof extension to the existing house.

    Received 28 Aug, published by the council 5 Sep 2026 Lawful development
  • P/2026/2787 Awaiting decision

    13 Denbigh Road, Hounslow, TW3 4DU

    Certificate of Lawfulness for the proposed erection of a detached outbuilding in the rear garden.

    Received 1 Oct, published by the council 9 Oct 2026 Lawful development
  • P/2026/2790 Awaiting decision

    14 Old Farm Close, Hounslow, TW4 7AB

    Certificate of lawfulness for the proposed erection of a rear roof extension and two front roof windows to the house.

    Received 1 Oct, published by the council 6 Oct 2026 Lawful development