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 45 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 50 yards 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

• 7 Southbourne Crescent London NW4 2LB

  26/3823/PNH Submitted 21 Oct 2026 50 yards away

  56% historically approved · decision due ~16 Dec

  Single storey rear extension added to an existing extension with the total extension measuring 6.00 metres deep, with a maximum height of 3.00 metres and an eaves height of 3.00 metres.

  Awaiting decision Prior approval Extension
  Small domestic

• 14 Southbourne Crescent London NW4 2JY

  25/3740/192 Submitted 11 Sep 2025 100 yards 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 100 yards away

  63% 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 150 yards 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 150 yards away

  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

  Granted Householder Extension Loft or dormer +2 19 docs
  Domestic

• 26/3953/HSE Awaiting decision

  51 Bedford Avenue Barnet EN5 2ER

  Single storey rear extension with flat roof, 1no. rooflight and new access steps following demolition of the existing conservatory. Removal of the rear chimney stack. Changes to ground floor north side fenestration

  2 Nov 2026 Householder
• 26/3947/HSE Awaiting decision

  20 Fallow Court Avenue London N12 0EB

  Single storey side and rear extension

  30 Oct 2026 Householder
• 26/3946/HSE Awaiting decision

  21 Selvage Lane London NW7 3SS

  Single storey front porch extension with pitched roof

  Received 30 Oct, published by the council 3 Nov 2026 Householder
• 26/3950/HSE Awaiting decision

  113 Walmington Fold London N12 7LH

  Single storey rear extension with pitched gable roof. New Pergola. Installation of Air Source Heat Pump (ASHP)

  Received 30 Oct, published by the council 2 Nov 2026 Householder
• 26/3941/HSE Awaiting decision

  29 Flower Lane London NW7 2JG

  Part single, part two storey rear extension with enlargement of the patio area following demolition of the conservatory

  Received 29 Oct, published by the council 2 Nov 2026 Householder