12 Boyne Avenue London NW4 2JN

1. 6 Oct 2026

   Received by Barnet

2. 7 Oct 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 1 December 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 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.

• 18 Boyne Avenue London NW4 2JN

  26/2816/PNH Submitted 30 Jul 2026 50 yards away

  56% historically approved · decision due ~24 Sep

  2no single storey rear extensions with a maximum depth of 6.00m, maximum height of 3.90m and an eaves height 3.00m

  Awaiting decision Prior approval Extension
  Small domestic

• 18 Boyne Avenue London NW4 2JN

  26/2815/192 Submitted 30 Jul 2026 50 yards away

  79% historically approved · decision due ~24 Sep

  Roof extension involving rear dormer window and 2no. front facing rooflights

  Awaiting decision Extension Loft or dormer +1

• 18 Boyne Avenue London NW4 2JN

  26/3482/HSE Submitted 24 Sep 2026 50 yards away

  77% historically approved · decision due ~19 Nov

  Single storey rear extension

  Awaiting decision Householder Extension
  Small domestic

• 40 Boyne Avenue London NW4 2JN

  26/0796/PNH Submitted 2 Mar 2026 50 yards away

  56% historically approved · decision due ~28 Apr

  Single storey rear extension with a proposed depth of 4.50m, maximum height of 3.00m and eaves height of 3.00m

  Awaiting decision Prior approval Extension 3 docs
  Small domestic

• Three Gables Bungalow Boyne Avenue London NW4 2JL

  25/4797/PNH Submitted 1 Dec 2025 50 yards away

  56% historically approved · decision due ~26 Jan

  2no. Single storey rear extensions with a proposed depth of 8.00 metres, maximum height of 3.00 metres and eaves height of 3.00 metres.

  Awaiting decision Prior approval Extension 16 docs
  Small domestic

• Three Gables Bungalow Boyne Avenue London NW4 2JL

  26/1601/HSE Submitted 28 Apr 2026 50 yards away

  Single storey front extension including new porch. 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

  Granted Householder Extension Loft or dormer 52 docs
  Small 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 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