12 Westbrook Crescent Barnet EN4 9AR

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 46 days over the applications it decided in the last year.

This application is with Barnet for determination, against a statutory target of eight weeks. Over the last year Barnet decided lawful development applications in a median of 28 days. More in our guide to how long planning decisions take.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 3 Westbrook Crescent Barnet EN4 9AP

  26/3749/HSE Submitted 16 Oct 2026 50 yards away

  77% historically approved · decision due ~11 Dec

  Part single, part two storey rear extension with pitched roof. New side window

  Awaiting decision Householder Extension Windows or glazing
  Domestic

• 6 Westbrook Crescent Barnet EN4 9AR

  25/3660/192 Submitted 4 Sep 2025 50 yards away

  80% 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 100 yards 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 100 yards away

  80% 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 100 yards 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

  Decided Householder Loft or dormer Windows or glazing
  Domestic

• 2 Lawton Road Barnet EN4 9BS

  26/3119/192 Submitted 24 Aug 2026 100 yards 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

• 26/2679/192 Granted

  21 Myddelton Park London N20 0JH

  Single storey rear extension and increase in ridge height of existing rear outrigger (Amended description).

  Received 20 Jul, published by the council 7 Aug 2026 Lawful development
• 26/1362/191 Refused

  145 Cotswold Gardens London NW2 1PL

  Use as a House in Multiple Occupation (HMO) for 6 people

  Received 14 Apr, published by the council 25 Jul 2026 Lawful development
• 26/1907/191 Granted

  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)

  Received 21 May, published by the council 16 Aug 2026 Lawful development
• 26/2392/192 Refused

  6 Mostyn Road Edgware HA8 0JD

  New front hardstanding and vehicular access to provide off-street parking

  Received 23 Jun, published by the council 9 Aug 2026 Lawful development
• 26/2059/192 Refused

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

  Received 3 Jun, published by the council 16 Aug 2026 Lawful development