14 Cool Oak Lane London NW9 7BJ

1. 4 Nov 2025

   Received by Barnet

2. 9 Dec 2025

   Decision issued: Prior Approval Not Required

3. 10 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

Prior approval applications arise where permitted development rights already grant the principle of the work, such as larger home extensions, changes of use to housing or agricultural buildings. The council may only consider the specific matters set out in the rules, for example transport, flooding or appearance, and in many classes the work may proceed if the council does not respond within the deadline, commonly 56 days.

More on prior approval applications in our guide

• 14 Cool Oak Lane London NW9 7BJ

  26/0159/HSE Submitted 15 Jan 2026 4m 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 4m 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 4m away

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

  Decided Lawful development Extension Loft or dormer +1 5 docs

• 6 Cool Oak Lane London NW9 7BJ

  26/1467/HSE Submitted 21 Apr 2026 34m away

  77% historically approved · decision due ~16 Jun

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

  Awaiting decision Householder Extension Demolition 14 docs
  Small domestic

• 6 Cool Oak Lane London NW9 7BJ

  26/0516/HSE Submitted 10 Feb 2026 34m 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 78m away

  79% historically approved · decision due ~21 Aug

  Installation of 1no. internally illuminated digital display panel

  Awaiting decision Advertising

• 26/3224/PNH Awaiting decision

  Low Ridge Rowley Lane Barnet EN5 3HS

  Single storey rear extension with a proposed depth of 8.00 metres, maximum height of 3.00 metres and eaves height of 3.00 metres.

  3 Sep 2026 Prior approval
• 26/3218/PNH Awaiting decision

  22 Highcroft Gardens London NW11 0LX

  2no. Single storey rear extensions with a proposed depth of 6.00 metres, maximum height of 3.00 metres and eaves height of 3.00 metres, and depth of 3.05 metres, maximum height of 3.00 metres and eaves height of 3.00 metres respectively, following demolition of existing roofed patio.

  2 Sep 2026 Prior approval
• 26/3212/PNH Awaiting decision

  10 Richmond Road Barnet EN5 1SB

  Single storey rear extension with a proposed depth of 5.54 metres, maximum height of 3.50 metres and eaves height of 3.00 metres.

  2 Sep 2026 Prior approval
• 26/3183/PNH Awaiting decision

  34 Selvage Lane London NW7 3SP

  Single storey rear extension with a proposed depth of 3.80 metres, maximum height of 3.00 metres and eaves height of 2.75 metres, following partial demolition of existing side manifestation.

  1 Sep 2026 Prior approval
• 26/3194/PNH Awaiting decision

  74 Windsor Drive Barnet EN4 8UD

  Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 3.00 metres and eaves height of 2.60 metres, following demolition of the existing rear extension.

  31 Aug 2026 Prior approval