89 Avondale Avenue Barnet EN4 8NA

1. 22 Dec 2025

   Received by Barnet

2. 10 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 16 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 45 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.

• 81 Avondale Avenue Barnet EN4 8NA

  26/1619/192 Submitted 29 Apr 2026 50 yards away

  Roof extension involving hip to gable, rear dormer window, 2no. front facing rooflights and new side gable window

  Granted Lawful development Extension Loft or dormer +1 7 docs

• 54 Derwent Avenue Barnet EN4 8LZ

  26/2191/192 Submitted 12 Jun 2026 100 yards away

  78% historically approved · decision due ~7 Aug

  Roof extension involving rear dormer window with juliette balcony

  Awaiting decision Extension Loft or dormer +1

• 73 Derwent Avenue Barnet EN4 8LY

  26/0885/HSE Submitted 9 Mar 2026 100 yards away

  Single storey side extension and alterations to existing rear extension including raising of the roof height (AMENDED DESCRIPTION)

  Granted Householder Extension 6 docs
  Small domestic

• 25 Grange Avenue Barnet EN4 8NJ

  26/1780/HSE Submitted 12 May 2026 150 yards away

  Part single, part two storey side and rear extensions with pitched roof, 2no. rooflights and new access steps to garden level

  Refused Householder Extension Loft or dormer 8 docs
  Domestic

• 42 Gallants Farm Road Barnet EN4 8ES

  25/4163/S73 Submitted 17 Oct 2025 150 yards away

  Variation of condition 1 (Approved Plans) of planning permission reference 24/2138/HSE dated 30/08/24 for 'Single storey side and rear extension with 4no rooflights, following demolition of the existing outrigger and shed.' Variation to include increasing the side extension by 1.2 metres to the front

  Granted Conditions Extension Loft or dormer +1 10 docs
  Small domestic

• 25 Grange Avenue Barnet EN4 8NJ

  26/3309/HSE Submitted 10 Sep 2026 150 yards away

  77% historically approved · decision due ~5 Nov

  Part lower ground, part single storey and part two storey side and rear extensions incorporating a pitched roof and two rooflights, together with the formation of a raised patio and access steps to the lower garden level

  Awaiting decision Householder Extension Loft or dormer
  Small domestic

• 26/3953/HSE Awaiting decision

  51 Bedford Avenue Barnet EN5 2ER

  Single storey rear extension with flat roof, 1no. rooflight and new access steps following demolition of the existing conservatory. Removal of the rear chimney stack. Changes to ground floor north side fenestration

  2 Nov 2026 Householder
• 26/3947/HSE Awaiting decision

  20 Fallow Court Avenue London N12 0EB

  Single storey side and rear extension

  30 Oct 2026 Householder
• 26/3941/HSE Awaiting decision

  29 Flower Lane London NW7 2JG

  Part single, part two storey rear extension with enlargement of the patio area following demolition of the conservatory

  Received 29 Oct, published by the council 2 Nov 2026 Householder
• 26/3933/HSE Awaiting decision

  11 Talbot Avenue London N2 0LS

  Single storey rear infill extension

  29 Oct 2026 Householder
• 26/3932/HSE Awaiting decision

  45 Summerlee Avenue London N2 9QP

  Erection of a rear outbuilding with 4no. rooflights following demolition of the existing garage

  29 Oct 2026 Householder