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Planning application

23 Penwerris Avenue, Isleworth, TW7 4QT

Granted Hounslow P/2025/3390 Householder Applications

Works: Extension Small domestic

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

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

Proposal

Retrospective application for the erection of a single-storey rear extension to the house. Removal of the rear canopy from the single storey rear extension.

As published by the council, reference P/2025/3390

Application record

Reference
P/2025/3390
Type
Householder Applications
Status
Decided: APPROVED
Decision
APPROVED
Received
11 Nov 2025
Validated
11 Nov 2025
Decided
19 Jan 2026
Ward
Osterley & Spring Grove
Postcode
TW7 4QT

Timeline

Dates from the published record

  1. 11 Nov 2025

    Received by Hounslow

  2. 19 Jan 2026

    Decision issued: APPROVED

  3. 12 Aug 2026

    Added to PlanIndex

Documents

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

13 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.

Trade members open them from here.

Open the documents

What this grant of permission means

Hounslow granted permission on 19 January 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 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 500 metres

  • 29 Penwerris Avenue, Isleworth, TW7 4QT

    P/2026/1345 Submitted 5 May 2026 29m away

    Erection of a hip to gable to both sides and a rear roof extension with three front roof windows to the house

    Withdrawn Householder Extension Loft or dormer +1 6 docs
    Domestic

  • 11 PENWERRIS AVENUE, ISLEWORTH, TW7 4QT

    P/2021/2269 Submitted 7 Jun 2021 53m away

    Erection of single storey side and rear extension following the demolition of existing garage.

    Granted Householder Extension Demolition 17 docs
    Small domestic

  • 18 Cranmore Avenue, Isleworth, TW7 4QW

    PA/2024/3490 Submitted 19 Oct 2024 69m away

    Ground floor rear extension 6.00 metres deep, maximum height 2.90 metres, 2.90 metres high to the eaves

    Granted Prior approval Extension 6 docs

  • 18 Cranmore Avenue,Isleworth,W7 4QW

    P/2024/3651 Submitted 4 Nov 2024 69m away

    Erection of a single storey and part two storey rear extension, first floor side extension, hip to gable extension and erection of a rear roof extension with two front roof windows to the house. Erection of single storey detached out building in the rear garden.

    Refused Householder Extension Loft or dormer +1 17 docs
    Small domestic

  • 28 Penwerris Avenue, Isleworth, TW7 4QX

    P/2025/2944 Submitted 30 Sep 2025 73m away

    Certificate of lawfulness for the proposed erection of a single storey detached outbuilding in the rear garden.

    Granted Lawful development 5 docs
    Small domestic

  • 28 Penwerris Avenue, Isleworth, TW7 4QX

    P/2026/1876 Submitted 24 Jun 2026 73m away

    Erection of two storey side and single storey and part first floor rear extension with conversion of the garage into habitable room and replacement of the garage doors with a window to the house.

    Granted Householder Extension Windows or glazing 8 docs
    Small domestic

In Hounslow

  • P/2026/2047 Granted

    9 Borough Road, Isleworth, TW7 5DY

    Erection of a single storey rear extension.

    10 Jul 2026 Householder
  • P/2026/1858 Granted

    8 CONNAUGHT AVENUE, HOUNSLOW, TW4 5BW

    Erection of single storey front extension to the outbuilding for used as storage, office and a Gym. Following part demolition of the outbuilding.

    23 Jun 2026 Householder
  • P/2026/2503 Awaiting decision

    25 Arnold Crescent, Isleworth, TW7 7NS

    Erection of a single storey rear, two storey side extension, and rear roof extension with two front roof windows to the house.

    3 Sep 2026 Householder
  • P/2026/1522 Granted

    4 Camborne Way, Hounslow, TW5 0PW

    Erection of a single storey rear extension and reduction in width of the existing side and rear extension.

    20 May 2026 Householder
  • P/2026/2024 Granted

    20 Hartland Road, Isleworth, TW7 6RH

    Erection of a rear roof extension with windows to the front of the house.

    8 Jul 2026 Householder