7 Ashbourne Avenue London N20 0AL

This site has had 2 applications since 2025.

• 25/3862/192 Awaiting decision

  7 Ashbourne Avenue London N20 0AL

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

  Submitted 19 Sep 2025 Lawful development

1. 10 Sep 2025

   Received by Barnet

2. 10 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 5 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 lawful development applications in a median of 28 days. More in our guide to how long planning decisions take.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 7 Ashbourne Avenue London N20 0AL

  25/3862/192 Submitted 19 Sep 2025 50 yards 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

• 5 Ashbourne Avenue London N20 0AL

  26/0678/HSE Submitted 20 Feb 2026 50 yards 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

• 5 Ashbourne Avenue London N20 0AL

  26/1618/HSE Submitted 29 Apr 2026 50 yards 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

  Granted Householder Extension Windows or glazing 6 docs
  Small domestic

• 78 Russell Lane London N20 0AP

  26/3819/PNH Submitted 20 Oct 2026 50 yards away

  56% historically approved · decision due ~17 Dec

  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.

  Awaiting decision Prior approval Extension Demolition
  Small domestic

• 78 Russell Lane London N20 0AP

  26/3133/PNH Submitted 25 Aug 2026 50 yards away

  56% 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)

  Decided Prior approval Extension Demolition
  Small domestic

• 80 Russell Lane London N20 0AP

  25/4596/HSE Submitted 18 Nov 2025 50 yards 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

• 26/2679/192 Granted

  21 Myddelton Park London N20 0JH

  Single storey rear extension and increase in ridge height of existing rear outrigger (Amended description).

  Received 20 Jul, published by the council 7 Aug 2026 Lawful development
• 26/1362/191 Refused

  145 Cotswold Gardens London NW2 1PL

  Use as a House in Multiple Occupation (HMO) for 6 people

  Received 14 Apr, published by the council 25 Jul 2026 Lawful development
• 26/1907/191 Granted

  8 Golders Manor Drive London NW11 9HT

  Use of the property as a self-contained residential unit at ground floor level and the first and second floors as a 4-bedroom, 4-person House in Multiple Occupation (Sui Generis) (AMENDED DESCRIPTION)

  Received 21 May, published by the council 16 Aug 2026 Lawful development
• 26/2392/192 Refused

  6 Mostyn Road Edgware HA8 0JD

  New front hardstanding and vehicular access to provide off-street parking

  Received 23 Jun, published by the council 9 Aug 2026 Lawful development
• 26/2059/192 Refused

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

  Received 3 Jun, published by the council 16 Aug 2026 Lawful development