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Planning application

12 Consort Mews, Isleworth, TW7 7NA

Awaiting decision Hounslow P/2026/2401 Householder Applications

Works: Extension Loft or dormer Small domestic

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

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Erection of a two storey side extension, part single storey part two storey rear extension, porch extension to the front, alterations to fenestrations, erection of a rooflight to the rear.

As published by the council, reference P/2026/2401

Application record

Reference
P/2026/2401
Type
Householder Applications
Status
Pending As published: REGISTERED: Under Assessment
Received
19 Aug 2026
Validated
25 Aug 2026
Ward
Hounslow South
Postcode
TW7 7NA

Site history

Applications at this address on the Hounslow register

This site has had 3 applications since 2021: 1 approved, 1 refused.

  • P/2023/0236 Granted

    12 CONSORT MEWS, ISLEWORTH, TW7 7NA

    Erection of a part two storey, part single storey side extension to the house

    Decided 17 Mar 2023 Householder
  • PA/2021/2331 Refused

    12 CONSORT MEWS, ISLEWORTH, TW7 7NA

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

    Decided 5 Jul 2021 Prior approval

Timeline

Dates from the published record

  1. 19 Aug 2026

    Received by Hounslow

  2. 25 Aug 2026

    Validated

    Checked as complete and ready for consideration.

  3. 2 Sep 2026

    Added to PlanIndex

  4. 10 Sep 2026

    Status changed to REGISTERED: Under Consultation

    Previously REGISTERED: Valid.

  5. 23 Sep 2026

    Status changed to REGISTERED: Under Assessment

    Previously REGISTERED: Under Consultation.

  6. Decision

    Awaiting decision

    Decision expected by 20 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

    Hounslow took a median of 56 days over the applications it decided in the last year.

Documents

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

7 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 happens while it is decided

This application is with Hounslow for determination, against a statutory target of eight weeks. Over the last year Hounslow decided householder applications in a median of 63 days. More in our guide to how long planning decisions take.

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

  • 12 CONSORT MEWS, ISLEWORTH, TW7 7NA

    P/2023/0236 Submitted 25 Jan 2023 50 yards away

    Erection of a part two storey, part single storey side extension to the house

    Granted Householder Extension 15 docs
    Small domestic

  • 12 CONSORT MEWS, ISLEWORTH, TW7 7NA

    PA/2021/2331 Submitted 9 Jun 2021 50 yards away

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

    Refused Prior approval Extension 6 docs

  • 13 Yeomans Mews, Isleworth, TW7 7LZ

    P/2025/2548 Submitted 19 Aug 2025 50 yards away

    Certificate of lawfulness for the proposed erection of a single storey rear extension to the house.

    Granted Lawful development Extension 6 docs
    Small domestic

  • 212 WHITTON DENE, ISLEWORTH, TW7 7LU

    P/2021/2457 Submitted 17 Jun 2021 50 yards away

    Erection of a first floor side extension and a single storey rear extension.

    Granted Householder Extension 4 docs
    Small domestic

  • 210 Whitton Dene, Isleworth, TW7 7LU

    P/2026/2150 Submitted 22 Jul 2026 100 yards away

    75% historically approved · decision due ~29 Oct

    Erection of a single storey detached outbuilding.

    Awaiting decision Householder 6 docs
    Small domestic

  • 45 Arnold Crescent, Isleworth, TW7 7NS

    P/2024/2821 Submitted 22 Aug 2024 100 yards away

    Erection of a single storey rear and part two storey rear extension and a front porch to the house.

    Refused Householder Extension 9 docs
    Small domestic

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