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Planning application

P/2024/2431

66 Cromwell Road, Hounslow, TW3 3QJ

Granted Hounslow Lawful Development Certificate (Proposed)

Proposal

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

As published by the council, reference P/2024/2431

Timeline

Dates from the published record

  1. 19 Jul 2024

    Received by Hounslow

  2. 28 Aug 2024

    Validated

    Checked as complete and ready for consideration.

  3. 29 Oct 2024

    Decision issued: GRANT

  4. 26 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

About lawful development applications

How this application type works

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

Nearby applications

Within 500 metres

  • P/2026/1353 Refused

    49 Nicholes Road, Hounslow, TW3 3QH

    Change of use from the existing single family house (C3) to a House in Multiple Occupation (C4).

    5 May 2026 74m away Full applications
  • PA/2026/1993 Awaiting decision

    125 Cromwell Road, Hounslow, TW3 3QL

    Ground floor rear extension 6.00 metres deep, maximum height 4.00 metres, 2.48 metres high to the eaves.

    6 Jul 2026 111m away Prior approval
  • P/2025/2836 Withdrawn

    177 Cromwell Road, Hounslow, TW3 3QW

    Conversion of a dwelling house into two self-contained flats incorporating a front roof window to the house.

    22 Sep 2025 183m away Full applications
  • P/2026/0546 Granted

    5 Rossindel Road, Hounslow, TW3 3QN

    Certificate of lawfulness for the existing use as a house in multiple occupation (C4)

    16 Feb 2026 188m away Lawful development
  • P/2026/0892 Awaiting decision

    80 Hibernia Road, Hounslow, TW3 3RP

    Conversion of existing dwelling to two self-contained flats with car parking, amenity space, cycle and refuse storage.

    18 Mar 2026 258m away Full applications
  • P/2024/2965 Granted

    32 Penderel Road, Hounslow, TW3 3QR

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

    5 Sep 2024 259m away Lawful development

In Hounslow

  • P/2026/2219 Awaiting decision

    Great West House,993 Great West Road,Brentford,TW8 9DF

    Certificate of lawfulness for the installation of two electricity substations.

    29 Jul 2026 Lawful development
  • P/2026/1626 Granted

    2 Oak Avenue, Hounslow, TW5 9EB

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

    2 Jun 2026 Lawful development
  • P/2026/2168 Awaiting decision

    49 Durham Road, Feltham, TW14 0AG

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

    24 Jul 2026 Lawful development
  • P/2026/1448 Granted

    13 Orchard Avenue, Hounslow, TW5 0DU

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

    13 May 2026 Lawful development
  • P/2026/1682 Granted

    133 Swan Road, Feltham, TW13 6LT

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

    5 Jun 2026 Lawful development