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Planning application

P/2026/00959/CLP

159 Percy Road, London, W12 9QJ

Awaiting decision Hammersmith and Fulham Certificate of Lawfulness Proposed

Proposal

Erection of a hip-to-gable rear roof extension with rear mansard roof and two rear dormers; installation of 1no. rooflight to the front roof slope and 1no. rooflight to the rear mansard; installation of an additional window to the flank elevation; and alterations to existing fenestration.

As published by the council, reference P/2026/00959/CLP

Timeline

Dates from the published record

  1. 9 Apr 2026

    Received by Hammersmith and Fulham

  2. 8 May 2026

    Validated

    Checked as complete and ready for consideration.

  3. 24 Jul 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

What happens while it is decided

The process from here

This application is with Hammersmith and Fulham for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

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

  • 2026/00103/NMAT Granted

    Intra House R/O, 193 Uxbridge Road, London, W12 9RA

    Non-material amendment to planning permission ref: 2024/02621/FUL granted 21st February 2025 for the 'Retention of extensions at ground, first and second floor levels in connection with the continued use of the building as an office (Class E); proposed works to include: erection of a canopy above the main entrance to northern elevation of the building; installation of 2no bicycle stand and provision of refuse storage at the front of the building' to allow amendments to the approved floor plans to include: omission of the fire-protected lobbies on the ground and first floors, replaced by a Category L2/M fire detection and alarm system designed and installed in accordance with BS 5839-1, re-location of doors to the staircase at ground, first and second floor levels and replace the approved Fire Safety Strategy report with new updated Fire Safety Strategy Report.

    14 Jan 2026 38m away Amendments
  • 2026/00262/DET Granted

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    2 Feb 2026 38m away Conditions
  • P/2026/01904/PACU1 Awaiting decision

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    24 Jul 2026 47m away Prior approval
  • 2025/00016/TREE Awaiting decision

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    Rear Garden T1 Lime - reduce back over garden of no 8 Bevan Mews by approx. 2m to previous reduction points. To help improve light into garden and surrounding area, suggest:

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  • 2025/01643/DET Awaiting decision

    442 Uxbridge Road, London, W12 0NS

    Submission of details of noise assessment pursuant to condition 7; sound insulation of the floor/ ceiling/ walls separating the commercial part(s) of the premises from the proposed dwelling pursuant to condition 8, preliminary risk assessment report pursuant to condition 9; site investigation scheme pursuant to condition 10; quantitative risk assessment report pursuant to condition 11; remediation method statement pursuant to condition 12; verification report pursuant to condition 13 and onward long-term monitoring methodology report pursuant to condition 14 of planning permission ref: 2023/01533/PMA56 granted 19th December 2023.

    16 Jun 2025 90m away Conditions
  • 2024/03150/ADV Awaiting decision

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In Hammersmith and Fulham

  • 64A Ormiston Grove, London, W12 0JS

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    28 Apr 2026 Lawful development
  • P/2026/01877/CLP Awaiting decision

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    23 Jul 2026 Lawful development
  • Larmenier And Sacred Heart Catholic Primary School, 41A Brook Green, London, W6 7BL

    Installation of a fixed glazed window with a perforated vent panel to the north elevation at first floor level.

    15 May 2026 Lawful development
  • 14 Sterndale Road, London, W14 0HS

    Erection of a single storey rear extension at ground floor level.

    20 Apr 2026 Lawful development
  • 18A Jerdan Place, London, SW6 1BH

    Change of use of existing 3 bedroom maisonette flat to a small House of Multiple Occupation (HMO - Use Class C4) for up to 5 people.

    8 May 2026 Lawful development