5 Ashbourne Avenue London N20 0AL

This site has had 2 applications since 2026: 0 approved, 1 refused.

• 26/0678/HSE Refused

  5 Ashbourne Avenue London N20 0AL

  Single storey rear extension with 1no. roof lantern, raised decking area with associated access steps and privacy screening. New front porch with pitched roof. New front hardstanding and vehicular access to provide off-street parking

  Decided 20 Apr 2026 Householder

1. 29 Apr 2026

   Received by Barnet

2. 25 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 24 June 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 43 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 householder applications in a median of 56 days. More in our guide to how long planning decisions take.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 5 Ashbourne Avenue London N20 0AL

  26/0678/HSE Submitted 20 Feb 2026 6m away

  Single storey rear extension with 1no. roof lantern, raised decking area with associated access steps and privacy screening. New front porch with pitched roof. New front hardstanding and vehicular access to provide off-street parking

  Refused Householder Extension Windows or glazing 7 docs
  Small domestic

• 7 Ashbourne Avenue London N20 0AL

  25/3730/192 Submitted 10 Sep 2025 7m away

  80% historically approved · decision due ~5 Nov

  Roof extension involving hip to gable, rear dormer window with juliette balcony and 2no. front facing rooflights

  Awaiting decision Lawful development Extension Loft or dormer +1 21 docs

• 7 Ashbourne Avenue London N20 0AL

  25/3862/192 Submitted 19 Sep 2025 7m away

  80% historically approved · decision due ~14 Nov

  Roof extension involving hip to gable, rear dormer window with juliette balcony and 2no. front facing rooflights

  Awaiting decision Lawful development Extension Loft or dormer +1 21 docs

• 78 Russell Lane London N20 0AP

  26/3133/PNH Submitted 25 Aug 2026 43m away

  58% historically approved · decision due ~20 Oct

  2no. Single storey rear extension 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. (Amended Description)

  Awaiting decision Prior approval Extension Demolition
  Small domestic

• 80 Russell Lane London N20 0AP

  25/4596/HSE Submitted 18 Nov 2025 57m away

  77% historically approved · decision due ~22 Jan

  Single storey side/rear extension with 1no. roof lantern following the partial demolition of existing garage. Roof extension involving a side dormer window. Erection of rear outbuilding following the demolition of existing (Amended Description)

  Awaiting decision Householder Extension Loft or dormer +2 7 docs
  Small domestic

• 54 Russell Lane London N20 0AE

  26/1530/PNH Submitted 24 Apr 2026 89m away

  58% historically approved · decision due ~23 Jun

  Single-storey rear extension with a proposed depth of 4.50 metres, a maximum height of 3.15 metres, and an eaves height of 3.15 metres.

  Awaiting decision Prior approval Extension 9 docs
  Small domestic

• 26/3396/HSE Awaiting decision

  43 Dukes Avenue London N3 2DE

  Single storey rear, part two storey side extension with 1no. rooflight following the demolition of existing shed. Roof extension with rear dormer window, 1no. front, 3no. side facing rooflights and roof windows to the front and side roof slopes. Installation of solar panels to side elevation of roof

  17 Sep 2026 Householder
• 26/3410/HSE Awaiting decision

  54 Ferney Road Barnet EN4 8LE

  Single storey rear extension with alteration to the raised terrace area including new access steps to garden

  17 Sep 2026 Householder
• 26/3385/HSE Awaiting decision

  Three Gables Bungalow Boyne Avenue London NW4 2JL

  Excavation of basement level with associated front and western lightwells. 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

  16 Sep 2026 Householder
• 26/3386/HSE Awaiting decision

  9 Colin Gardens London NW9 6EL

  Single storey rear extension with 1no. rooflight following demolition of the existing garage

  16 Sep 2026 Householder
• 26/3363/HSE Awaiting decision

  125 Park Road Barnet EN4 9QN

  Single storey side / rear extension including garage with 1no. roof lantern following the demolition of existing garage and front porch. Roof extension involving hip to gable on both sides with rear dormer window and 3no. front facing rooflights

  15 Sep 2026 Householder