21 Southbourne Crescent London NW4 2LB

This site has had 2 applications since 2026.

• 26/2613/HSE Decided

  21 Southbourne Crescent London NW4 2LB

  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

  Submitted 13 Jul 2026 Householder

1. 16 Mar 2026

   Received by Barnet

2. 17 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 25 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 12 May 2026, 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, against a statutory target of eight weeks. Over the last year Barnet decided householder applications in a median of 56 days. More in our guide to how long planning decisions take.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 21 Southbourne Crescent London NW4 2LB

  26/2613/HSE Submitted 13 Jul 2026 43m 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

  Decided Householder Extension Loft or dormer +2
  Small domestic

• 14 Southbourne Crescent London NW4 2JY

  25/3740/192 Submitted 11 Sep 2025 88m away

  80% historically approved · decision due ~6 Nov

  Erection of a rear outbuilding

  Awaiting decision Lawful development 2 docs

• Sopers Yard 155 Bell Lane London NW4 2AP

  26/0019/FUL Submitted 5 Jan 2026 105m away

  61% 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

• Geraldene Greenbank Crescent London NW4 2LA

  26/1213/HSE Submitted 30 Mar 2026 118m 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

• 49 Southbourne Crescent London NW4 2JX

  26/1639/HSE Submitted 30 Apr 2026 135m 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

• Highbank Greenbank Crescent London NW4 2LA

  26/2528/192 Submitted 6 Jul 2026 135m 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

• 26/3396/HSE Awaiting decision

  43 Dukes Avenue London N3 2DE

  Single storey rear, part two storey side extension with 1no. rooflight following the demolition of existing shed. Roof extension with rear dormer window, 1no. front, 3no. side facing rooflights and roof windows to the front and side roof slopes. Installation of solar panels to side elevation of roof

  17 Sep 2026 Householder
• 26/3410/HSE Awaiting decision

  54 Ferney Road Barnet EN4 8LE

  Single storey rear extension with alteration to the raised terrace area including new access steps to garden

  17 Sep 2026 Householder
• 26/3385/HSE Awaiting decision

  Three Gables Bungalow Boyne Avenue London NW4 2JL

  Excavation of basement level with associated front and western lightwells. Single storey rear extensions with new patio area. Alterations to ground levels. Formation of first floor with new pitched gable roof with 2no. front and 2no. rear dormers and 2no. front facing, 2no side rooflights with associated hard and soft landscaping

  16 Sep 2026 Householder
• 26/3386/HSE Awaiting decision

  9 Colin Gardens London NW9 6EL

  Single storey rear extension with 1no. rooflight following demolition of the existing garage

  16 Sep 2026 Householder
• 26/3363/HSE Awaiting decision

  125 Park Road Barnet EN4 9QN

  Single storey side / rear extension including garage with 1no. roof lantern following the demolition of existing garage and front porch. Roof extension involving hip to gable on both sides with rear dormer window and 3no. front facing rooflights

  15 Sep 2026 Householder