78 Russell Lane London N20 0AP

1. 25 Aug 2026

   Received by Barnet

2. 28 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 20 October 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 42 days over the applications it decided in the last year.

This application is with Barnet for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

Prior approval applications arise where permitted development rights already grant the principle of the work, such as larger home extensions, changes of use to housing or agricultural buildings. The council may only consider the specific matters set out in the rules, for example transport, flooding or appearance, and in many classes the work may proceed if the council does not respond within the deadline, commonly 56 days.

More on prior approval applications in our guide

• 80 Russell Lane London N20 0AP

  25/4596/HSE Submitted 18 Nov 2025 29m 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

• 5 Ashbourne Avenue London N20 0AL

  26/1618/HSE Submitted 29 Apr 2026 43m away

  77% historically approved · decision due ~24 Jun

  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

  Awaiting decision Householder Extension Windows or glazing 5 docs
  Small domestic

• 5 Ashbourne Avenue London N20 0AL

  26/0678/HSE Submitted 20 Feb 2026 46m away

  77% historically approved · decision due ~20 Apr

  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

  Awaiting decision Householder Extension Windows or glazing 3 docs
  Small domestic

• 7 Ashbourne Avenue London N20 0AL

  25/3730/192 Submitted 10 Sep 2025 50m away

  79% 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 50m away

  79% 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

• 111 Russell Lane London N20 0AZ

  25/4810/HSE Submitted 2 Dec 2025 66m away

  77% historically approved · decision due ~27 Jan

  Roof extension including hip to gable, rear dormer window and 4no. rooflights to front roofslope. Changes to rear fenestration

  Awaiting decision Householder Extension Loft or dormer +1 9 docs
  Domestic

• 26/3224/PNH Awaiting decision

  Low Ridge Rowley Lane Barnet EN5 3HS

  Single storey rear extension with a proposed depth of 8.00 metres, maximum height of 3.00 metres and eaves height of 3.00 metres.

  3 Sep 2026 Prior approval
• 26/3218/PNH Awaiting decision

  22 Highcroft Gardens London NW11 0LX

  2no. Single storey rear extensions with a proposed depth of 6.00 metres, maximum height of 3.00 metres and eaves height of 3.00 metres, and depth of 3.05 metres, maximum height of 3.00 metres and eaves height of 3.00 metres respectively, following demolition of existing roofed patio.

  2 Sep 2026 Prior approval
• 26/3212/PNH Awaiting decision

  10 Richmond Road Barnet EN5 1SB

  Single storey rear extension with a proposed depth of 5.54 metres, maximum height of 3.50 metres and eaves height of 3.00 metres.

  2 Sep 2026 Prior approval
• 26/3183/PNH Awaiting decision

  34 Selvage Lane London NW7 3SP

  Single storey rear extension with a proposed depth of 3.80 metres, maximum height of 3.00 metres and eaves height of 2.75 metres, following partial demolition of existing side manifestation.

  1 Sep 2026 Prior approval
• 26/3194/PNH Awaiting decision

  74 Windsor Drive Barnet EN4 8UD

  Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 3.00 metres and eaves height of 2.60 metres, following demolition of the existing rear extension.

  31 Aug 2026 Prior approval