Skip to content
PlanIndex Get alerts
Menu

Planning application

17 HILLARY DRIVE, ISLEWORTH, TW7 7EG

Refused Hounslow P/2023/1521 Lawful Use Certificate

Works: Extension Small domestic

Read from the description, not a valuation. How we read the register

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 erection of a single storey rear extension

As published by the council, reference P/2023/1521

Application record

Reference
P/2023/1521
Type
Lawful Use Certificate
Status
Refused As published: Decided: REFUSED (FULL PLANNING PERMISSION REQUIRED)
Decision
Refused As published: REFUSED (FULL PLANNING PERMISSION REQUIRED)
Received
15 May 2023
Validated
15 May 2023
Decided
23 May 2023
Ward
Isleworth
Decision by
Delegated
Postcode
TW7 7EG

Timeline

Dates from the published record

  1. 15 May 2023

    Received by Hounslow

  2. 23 May 2023

    Decision issued: REFUSED (FULL PLANNING PERMISSION REQUIRED)

  3. 30 Sep 2026

    Added to PlanIndex

Documents

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

8 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 refusal means

Hounslow 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 0.3 miles

  • 294 Twickenham Road, Isleworth, TW7 7DU

    P/2025/0643 Submitted 28 Feb 2025 100 yards away

    dropped kerb outside of 294 twickenham road for a disabled driver

    Withdrawn Householder 5 docs
    Small domestic

  • 2 Dawes Avenue, Isleworth, TW7 7JT

    P/2024/3415 Submitted 21 May 2024 100 yards away

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

    Granted Lawful development Extension Loft or dormer +1

  • 4 Dawes Avenue, Isleworth, TW7 7JT

    PA/2025/3597 Submitted 2 Dec 2025 100 yards away

    Ground floor rear extension 6.00 metres deep, maximum height 3.28 metres, 2.77 metres high to the eaves.

    Refused Prior approval Extension 6 docs

  • 4 Dawes Avenue, Isleworth, TW7 7JT

    P/2026/2374 Submitted 17 Aug 2026 100 yards away

    Non material amendment to change the flat roof to a pitched roof of planning permission P/2026/1102 approved 29/07/2026 for the erection of a single storey rear extension to the house.

    Refused Amendments Extension 10 docs
    Small domestic

  • 4 Dawes Avenue, Isleworth, TW7 7JT

    P/2026/1102 Submitted 7 Apr 2026 100 yards away

    Erection of a single storey rear extension to the house.

    Granted Householder Extension 46 docs
    Small domestic

  • 7 DAWES AVENUE, ISLEWORTH, TW7 7JU

    P/2021/2898 Submitted 15 Jul 2021 100 yards away

    Erection of a single storey rear extension with two roof lanterns to the house

    Granted Householder Extension 6 docs
    Small domestic

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