88 Princes Park Avenue London NW11 0JX

This site has had 5 applications since 2025: 0 approved, 2 refused.

• 26/3648/HSE Awaiting decision

  88 Princes Park Avenue London NW11 0JX

  Part single, part two storey side and rear extension following demolition of the existing conservatory. Mansard roof extension involving 2no. rear dormer windows, 2no. side dormer windows and 2no. front facing rooflights, 4no. side facing rooflights and 2no. rooflights to flat roof

  Submitted 8 Oct 2026 Householder
• 26/1529/HSE Awaiting decision

  88 Princes Park Avenue London NW11 0JX

  Part single, part two storey side and rear extension following demolition of the existing conservatory. Mansard roof extension involving two rear dormer windows

  Submitted 24 Apr 2026 Householder
• 26/0661/HSE Refused

  88 Princes Park Avenue London NW11 0JX

  Part single, part two storey side and rear extension following demolition of the existing conservatory. Mansard roof extension involving two side dormer windows on either side of the roof slope and two rear dormers

  Decided 30 Mar 2026 Householder
• 26/0637/HSE Refused

  88 Princes Park Avenue London NW11 0JX

  Part single, part two-storey side and rear extension following demolition of the existing conservatory. Mansard roof extension involving two side dormer windows on either side of the roof slope and two rear dormers with juliette balconies

  Decided 24 Mar 2026 Householder

1. 12 Dec 2025

   Received by Barnet

2. 17 Dec 2025

   Validated

   Checked as complete and ready for consideration.

3. 10 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 11 February 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.

• 88 Princes Park Avenue London NW11 0JX

  26/0661/HSE Submitted 20 Feb 2026 50 yards away

  Part single, part two storey side and rear extension following demolition of the existing conservatory. Mansard roof extension involving two side dormer windows on either side of the roof slope and two rear dormers

  Refused Householder Extension Loft or dormer +2 9 docs
  Small domestic

• 88 Princes Park Avenue London NW11 0JX

  26/0637/HSE Submitted 18 Feb 2026 50 yards away

  Part single, part two-storey side and rear extension following demolition of the existing conservatory. Mansard roof extension involving two side dormer windows on either side of the roof slope and two rear dormers with juliette balconies

  Refused Householder Extension Loft or dormer +2 9 docs
  Small domestic

• 88 Princes Park Avenue London NW11 0JX

  26/1529/HSE Submitted 24 Apr 2026 50 yards away

  77% historically approved · decision due ~19 Jun

  Part single, part two storey side and rear extension following demolition of the existing conservatory. Mansard roof extension involving two rear dormer windows

  Awaiting decision Householder Extension Loft or dormer +2 8 docs
  Small domestic

• 88 Princes Park Avenue London NW11 0JX

  26/3648/HSE Submitted 8 Oct 2026 50 yards away

  77% historically approved · decision due ~3 Dec

  Part single, part two storey side and rear extension following demolition of the existing conservatory. Mansard roof extension involving 2no. rear dormer windows, 2no. side dormer windows and 2no. front facing rooflights, 4no. side facing rooflights and 2no. rooflights to flat roof

  Awaiting decision Householder Extension Loft or dormer +2
  Small domestic

• 92 Princes Park Avenue London NW11 0JX

  26/0427/HSE Submitted 4 Feb 2026 50 yards away

  77% historically approved · decision due ~1 Apr

  Part single, part two storey side and rear extensions with 3no. rooflights. Partial conversion of the existing garage. Alterations to front bay windows and introduction of new front bay windows. New front entrance including new roof canopy and columns with associated ramp. Alterations to existing fenestration. New side windows. Roof alteration and extension including roof lights, and side and rear dormer windows. Installation of solar panels. Installation of Air conditioning and air source heat pump external units to side elevations

  Awaiting decision Householder Extension Loft or dormer +2 26 docs
  Domestic

• 12 Park Way London NW11 0EX

  26/2518/PNH Submitted 3 Jul 2026 50 yards away

  2no. single storey rear extensions with a proposed depth of 8.00m, maximum height of 3.30m and eaves height of 3.00m

  Refused Prior approval Extension 19 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

  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