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Planning application

12 Westbrook Crescent Barnet EN4 9AR

Awaiting decision Barnet 25/3609/192 Proposed Lawful Development Certificate

Works: Extension Loft or dormer Windows or glazing 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

Single storey side extension. Roof extension involving hip to gable, rear dormer window with juliette balcony, 3no. front facing rooflights and new side gable window

As published by the council, reference 25/3609/192

Application record

Reference
25/3609/192
Type
Proposed Lawful Development Certificate
Status
Pending Consideration
Received
2 Sep 2025
Validated
17 Sep 2025
Ward
East Barnet
Postcode
EN4 9AR

Timeline

Dates from the published record

  1. 2 Sep 2025

    Received by Barnet

  2. 17 Sep 2025

    Validated

    Checked as complete and ready for consideration.

  3. 10 Aug 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 12 November 2025, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

    Barnet took a median of 42 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

Agent on file, an architecture practice

2 applications on PlanIndex · across 2 councils

Trade members see who it is, their full track record, and every application they have filed.

See who's behind it

Documents

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

2 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 happens while it is decided

The process from here

This application is with Barnet 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

  • 6 Westbrook Crescent Barnet EN4 9AR

    25/3660/192 Submitted 4 Sep 2025 56m away

    79% historically approved · decision due ~13 Nov

    Roof extension involving hip to gable, rear dormer window, 2no front facing rooflights and new side gable window

    Awaiting decision Lawful development Extension Loft or dormer +1 8 docs

  • 3 Westbrook Crescent Barnet EN4 9AP

    26/1918/HSE Submitted 21 May 2026 77m away

    Part single, part two storey rear extension. 1No side window

    Refused Householder Extension Windows or glazing 11 docs
    Domestic

  • 3 Westbrook Crescent Barnet EN4 9AP

    26/1919/192 Submitted 21 May 2026 77m away

    79% historically approved · decision due ~16 Jul

    Roof extension involving rear dormer window and 2no. front facing rooflights

    Awaiting decision Lawful development Extension Loft or dormer +1 7 docs

  • 2 Lawton Road Barnet EN4 9BS

    26/3120/HSE Submitted 24 Aug 2026 108m away

    77% historically approved · decision due ~21 Oct

    Conversion of the existing garage into habitable room including insertion of window and door to replace garage door, alterations to the roof and insertion of rooflights

    Awaiting decision Householder Loft or dormer Windows or glazing
    Domestic

  • 2 Lawton Road Barnet EN4 9BS

    26/3119/192 Submitted 24 Aug 2026 108m away

    79% historically approved · decision due ~21 Oct

    Alterations and extensions to roof including insertion of 3no. rear window, 3no. front facing rooflights and new side gable window

    Awaiting decision Extension Loft or dormer +1

  • 33 Westbrook Crescent Barnet EN4 9AS

    26/0712/HSE Submitted 24 Feb 2026 134m away

    77% historically approved · decision due ~21 Apr

    Single storey rear extension

    Awaiting decision Householder Extension 4 docs
    Small domestic

In Barnet

  • 26/1907/191 Decided

    8 Golders Manor Drive London NW11 9HT

    Use of the property as a self-contained residential unit at ground floor level and the first and second floors as a 4-bedroom, 4-person House in Multiple Occupation (Sui Generis) (AMENDED DESCRIPTION)

    21 May 2026 Lawful development
  • 26/2059/192 Decided

    Low Ridge Rowley Lane Barnet EN5 3HS

    Erection of a rear outbuilding

    3 Jun 2026 Lawful development
  • 26/2066/192 Decided

    355 Hendon Way London NW4 3NB

    Roof extension involving rear dormer window and 3no. front facing rooflights. Removal of chimney on rear elevation (AMENDED DESCRIPTION)

    3 Jun 2026 Lawful development
  • 26/1663/192 Decided

    152 Deans Lane Edgware HA8 9NT

    Change of use from single family dwellinghouse (Class C3a) to supported living accommodation Class C3b)

    5 May 2026 Lawful development
  • 26/2025/192 Decided

    18 Hale Drive London NW7 3DU

    Roof extension involving hip to gable, rear dormer window, 2no. front facing rooflights and new side gable window

    1 Jun 2026 Lawful development