15 Haslemere Gardens London N3 3EA

1. 3 Oct 2025

   Received by Barnet

2. 10 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 28 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 46 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 prior approval applications in a median of 36 days. More in our guide to how long planning decisions take.

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.

• 30 Fairholme Gardens London N3 3EB

  26/2322/HSE Submitted 19 Jun 2026 50 yards away

  77% historically approved · decision due ~14 Aug

  First floor rear extension. Changes to fenestration

  Awaiting decision Householder Extension Windows or glazing
  Domestic

• 22B Fairholme Gardens London N3 3EB

  26/2135/FUL Submitted 8 Jun 2026 50 yards away

  Change of use from existing Class C3 dwellinghouse to Class C2 (children's care home)

  Refused Full applications
  Domestic

• 30 Fairholme Gardens London N3 3EB

  26/3299/HSE Submitted 10 Sep 2026 50 yards away

  77% historically approved · decision due ~9 Nov

  First floor rear extension. Changes to side fenestration

  Awaiting decision Householder Extension Windows or glazing
  Domestic

• 30 Fairholme Gardens London N3 3EB

  25/5190/HSE Submitted 29 Dec 2025 100 yards away

  77% historically approved · decision due ~23 Feb

  Single storey rear extension with 2no. rooflights. Conversion of the existing garage into habitable room, insertion of window to replace the existing garage door

  Awaiting decision Householder Extension Loft or dormer +1 8 docs
  Small domestic

• 30 Fairholme Gardens London N3 3EB

  26/1221/HSE Submitted 31 Mar 2026 100 yards away

  77% historically approved · decision due ~28 May

  First floor rear extension. Changes to fenestration

  Awaiting decision Householder Extension Windows or glazing 6 docs
  Domestic

• 15 Fairholme Gardens London N3 3ED

  26/2227/FUL Submitted 15 Jun 2026 100 yards away

  63% historically approved · decision due ~24 Aug

  Demolition of the existing dwelling and erection of a two storey detached dwellinghouse with new crown roof. Associated landscaping, off street parking, amenity space and refuse/recycling storage

  Decided Full applications Demolition
  Domestic

• 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

  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