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Planning application

16 Downs View, Isleworth, TW7 5HF

Refused Hounslow P/2025/3732 Householder Applications

Works: Extension Loft or dormer Windows or glazing 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

Erection of a rear roof extension with hip to gable conversion and front roof windows to the house.

As published by the council, reference P/2025/3732

Application record

Reference
P/2025/3732
Type
Householder Applications
Status
Refused As published: Decided: REFUSED
Decision
Refused As published: REFUSED
Received
16 Dec 2025
Validated
16 Dec 2025
Decided
10 Feb 2026
Ward
Osterley & Spring Grove
Postcode
TW7 5HF

Site history

Applications at this address on the Hounslow register

This site has had 3 applications since 2025: 2 approved, 1 refused.

  • P/2025/2942 Granted

    16 Downs View, Isleworth, TW7 5HF

    Erection of single storey side extension to the house.

    Decided 5 Dec 2025 Householder
  • P/2025/2940 Granted

    16 Downs View, Isleworth, TW7 5HF

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

    Decided 25 Nov 2025 Lawful development

Timeline

Dates from the published record

  1. 16 Dec 2025

    Received by Hounslow

  2. 10 Feb 2026

    Decision issued: REFUSED

  3. 12 Aug 2026

    Added to PlanIndex

Documents

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

10 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 householder applications

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 16 Downs View, Isleworth, TW7 5HF

    P/2025/2942 Submitted 30 Sep 2025 50 yards away

    Erection of single storey side extension to the house.

    Granted Householder Extension 13 docs
    Small domestic

  • 16 Downs View, Isleworth, TW7 5HF

    P/2025/2940 Submitted 30 Sep 2025 50 yards away

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

    Granted Lawful development Extension Loft or dormer +1 10 docs

  • 18 Downs View, Isleworth, TW7 5HF

    P/2024/3987 Submitted 25 Nov 2024 50 yards away

    Certificate of Lawfulness for the proposed erection of a hip-to-gable conversion and rear roof extension and installation of one front rooflight and one side window.

    Granted Lawful development Extension Loft or dormer +1 11 docs

  • 41 NORTHUMBERLAND AVENUE, ISLEWORTH, TW7 5HZ

    P/2019/3927 Submitted 29 Oct 2019 50 yards away

    Conversion of existing store into a habitable room and replacement of up and over door with new windows

    Granted Householder Windows or glazing 6 docs
    Domestic

  • 6 Roxborough Avenue, Isleworth, TW7 5HG

    P/2026/1070 Submitted 1 Apr 2026 50 yards away

    Erection of a part first floor rear extension to the house.

    Granted Householder Extension 13 docs
    Domestic

  • 23 Downs View, Isleworth, TW7 5HF

    P/2024/3516 Submitted 22 Oct 2024 100 yards away

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

    Granted Lawful development Extension Loft or dormer +1 7 docs

In Hounslow

  • P/2026/2304 Granted

    18 Clifden Road, Brentford, TW8 0PF

    Erection of a side and rear extensions.

    Received 7 Aug, published by the council 12 Aug 2026 Householder
  • P/2026/2804 Awaiting decision

    128 Durham Road, Feltham, TW14 0AE

    Erection of a detached outbuilding in the rear garden following demolition of existing shed.

    Received 2 Oct, published by the council 9 Oct 2026 Householder
  • P/2026/2301 Granted

    4 Glebe Street, Chiswick, W4 2BG

    Erection of a front side and rear side infill extensions with alterations to the rear elevation, a rear side first floor infill extension with replacement of windows to the rear elevation and installation of new rooflights to the existing ground floor infill extension of the house

    Received 7 Aug, published by the council 16 Aug 2026 Householder
  • P/2026/1167 Granted

    20 Firs Drive, Hounslow, TW5 9TD

    Erection of part one, part two-storey side extension following demolition of existing garage and part one, part two-storey rear extension. Raising of roof ridge, erection of rear roof extensions, and installation of one front roof window.

    Received 15 Apr, published by the council 26 Jul 2026 Householder
  • P/2026/2025 Granted

    1 Kneller Gardens, Isleworth, TW7 7NP

    Erection of a single storey rear and first floor side extension incorporating the conversion of the existing garage to a habitable room

    Received 8 Jul, published by the council 26 Jul 2026 Householder