14 Southbourne Crescent London NW4 2JY

1. 11 Sep 2025

   Received by Barnet

2. 10 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 6 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 43 days over the applications it decided in the last year.

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.

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

• Geraldene Greenbank Crescent London NW4 2LA

  26/1213/HSE Submitted 30 Mar 2026 42m away

  77% historically approved · decision due ~2 Jun

  Conversion of the garage into a habitable room with front extension and insertion of window to replace garage door. Alteration to porch roof. First floor side extension with alteration to roof over existing side extension. Removal of chimney stacks (AMENDED DESCRIPTION)

  Awaiting decision Householder Extension Windows or glazing 17 docs
  Small domestic

• Highbank Greenbank Crescent London NW4 2LA

  26/2528/192 Submitted 6 Jul 2026 49m away

  79% historically approved · decision due ~31 Aug

  Use of a (Class 3a) dwelling as a children's home for up to three children, with a manager and three carers, two of whom would stay overnight, working on a rota basis (Class C2).

  Awaiting decision
  Domestic

• 21 Southbourne Crescent London NW4 2LB

  26/2613/HSE Submitted 13 Jul 2026 51m away

  77% historically approved · decision due ~7 Sep

  Two storey side and part single, part two storey rear extension following demolition of existing garage. New rear patio and steps to garden. Alterations to the rear dormer window and front rooflights. New front porch

  Awaiting decision Householder Extension Loft or dormer +2
  Small domestic

• 21 Southbourne Crescent London NW4 2LB

  26/0989/HSE Submitted 16 Mar 2026 88m away

  77% historically approved · decision due ~12 May

  Two storey side and part single, part two storey rear extension following demolition of existing garage. Alterations and extensions to roof including enlargement of rear dormer window and insertion of 2no. rooflights to front roofslope. New rear patio and steps to garden. New front porch

  Awaiting decision Householder Extension Loft or dormer +2 30 docs
  Small domestic

• 49 Southbourne Crescent London NW4 2JX

  26/1639/HSE Submitted 30 Apr 2026 126m away

  77% historically approved · decision due ~30 Jun

  Lower ground floor storage area, part single, part two-storey, front side and rear extension with associated patio steps following the demolition of the existing garage. Roof extension involving side dormer window, 2no. front and 1no. rear facing rooflight and new side gable window

  Awaiting decision Householder Extension Loft or dormer +2 16 docs
  Domestic

• Sopers Yard 155 Bell Lane London NW4 2AP

  26/0019/FUL Submitted 5 Jan 2026 192m away

  60% historically approved · decision due ~9 Mar

  Part retrospective change of use of the land to an Early Years Children's Nursery, including the retention of two single-storey modular buildings, associated outdoor play areas, landscaping, parking, access and ancillary works. Proposed new perimeter security fencing, internal boundary fencing, security cabin and surface water attenuation

  Awaiting decision Full applications 26 docs
  Small domestic

• 26/2679/192 Decided

  21 Myddelton Park London N20 0JH

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

  20 Jul 2026 Lawful development
• 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