14 Cool Oak Lane London NW9 7BJ

This site has had 4 applications since 2025: 3 approved, 0 refused.

• 26/0972/HSE Granted

  14 Cool Oak Lane London NW9 7BJ

  Part single, part two storey side and rear extension including conversion of garage into habitable room insertion of window to replace garage door

  Decided 11 May 2026 Householder
• 26/0159/HSE Awaiting decision

  14 Cool Oak Lane London NW9 7BJ

  Part single, part two storey side and rear extension including conversion of the garage into habitable room and replacement of the existing shutter with window. Hip to gable roof extension

  Submitted 15 Jan 2026 Householder
• 25/4403/192 Granted

  14 Cool Oak Lane London NW9 7BJ

  Roof extension involving hip to gable, rear dormer window, 3no. front facing rooflights and new side gable window

  Decided 25 Nov 2025 Lawful development

1. 4 Nov 2025

   Received by Barnet

2. 9 Dec 2025

   Decision issued: Prior Approval Not Required

3. 10 Aug 2026

   Added to PlanIndex

Barnet granted permission on 9 December 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

• 14 Cool Oak Lane London NW9 7BJ

  26/0159/HSE Submitted 15 Jan 2026 50 yards away

  77% historically approved · decision due ~19 Mar

  Part single, part two storey side and rear extension including conversion of the garage into habitable room and replacement of the existing shutter with window. Hip to gable roof extension

  Awaiting decision Householder Extension Loft or dormer +1 7 docs
  Domestic

• 14 Cool Oak Lane London NW9 7BJ

  26/0972/HSE Submitted 13 Mar 2026 50 yards away

  Part single, part two storey side and rear extension including conversion of garage into habitable room insertion of window to replace garage door

  Granted Householder Extension Windows or glazing 7 docs
  Domestic

• 14 Cool Oak Lane London NW9 7BJ

  25/4403/192 Submitted 4 Nov 2025 50 yards away

  Roof extension involving hip to gable, rear dormer window, 3no. front facing rooflights and new side gable window

  Granted Lawful development Extension Loft or dormer +1 5 docs

• 6 Cool Oak Lane London NW9 7BJ

  26/1467/HSE Submitted 21 Apr 2026 50 yards away

  Single storey side infill extension and single storey rear extension following demolition of existing outbuilding and greenhouse. Single storey front extension

  Refused Householder Extension Demolition 16 docs
  Small domestic

• 6 Cool Oak Lane London NW9 7BJ

  26/0516/HSE Submitted 10 Feb 2026 50 yards away

  77% historically approved · decision due ~7 Apr

  Single storey side infill extension and single storey rear extension following demolition of existing outbuilding. Single storey front extension

  Awaiting decision Householder Extension Demolition 12 docs
  Small domestic

• 129 West Hendon Broadway London NW9 7DY

  26/2369/ADV Submitted 22 Jun 2026 50 yards away

  93% historically approved · decision due ~21 Aug

  Installation of 1no. internally illuminated digital display panel

  Awaiting decision Advertising 7 docs

• 26/3835/PNH Awaiting decision

  3 Devonshire Crescent London NW7 1DN

  Single storey rear extension with a proposed depth of 5.00 metres, maximum height of 3.48 metres and eaves height of 3.00 metres. Following demolition of existing rear outrigger.

  22 Oct 2026 Prior approval
• 26/3832/PNH Awaiting decision

  48 Alverstone Avenue Barnet EN4 8EB

  Single storey rear extension with a proposed depth of 4.5 metres, maximum height of 3.15 metres and eaves height of 3 metres following demolition of existing rear extension.

  22 Oct 2026 Prior approval
• 26/3823/PNH Awaiting decision

  7 Southbourne Crescent London NW4 2LB

  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.

  21 Oct 2026 Prior approval
• 26/3809/PND Awaiting decision

  10 Clifford Road Barnet EN5 5PG

  Demolition of existing garage and attached pitched-roof structure

  21 Oct 2026 Prior approval
• 26/3819/PNH Awaiting decision

  78 Russell Lane London N20 0AP

  2no. Single storey rear extensions with a proposed depth of 7.00 metres, maximum height of 3.60 metres and eaves height of 3.00 metres. Following demolition of the existing side/rear outrigger.

  Received 20 Oct, published by the council 22 Oct 2026 Prior approval