12 Marlborough Avenue Edgware HA8 8UH

1. 24 Oct 2025

   Received by Barnet

2. 27 Nov 2025

   Decision issued: Prior Approval Not Required

3. 10 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

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

• 12 Marlborough Avenue Edgware HA8 8UH

  26/0630/192 Submitted 18 Feb 2026 5m away

  79% historically approved · decision due ~15 Apr

  Roof extension involving side/rear wraparound dormer

  Awaiting decision Lawful development Extension Loft or dormer 4 docs

• 12 Marlborough Avenue Edgware HA8 8UH

  25/4255/HSE Submitted 24 Oct 2025 5m away

  Front porch extension including the relocation of the front door and new access steps. First floor side extension and alterations to the existing roof

  Granted Householder Extension 6 docs
  Small domestic

• 12 Marlborough Avenue Edgware HA8 8UH

  26/2009/192 Submitted 29 May 2026 5m away

  79% historically approved · decision due ~24 Jul

  Removal and alteration of existing roof above existing two storey side (Phase 1). Roof extension involving wraparound side and rear dormer windows (Phase 2). (Phase 2 to commence when phase 1 completed)

  Awaiting decision Lawful development Extension Loft or dormer +1 5 docs

• 12 Marlborough Avenue Edgware HA8 8UH

  26/3039/HSE Submitted 18 Aug 2026 25m away

  77% historically approved · decision due ~14 Oct

  Part single, part two storey rear extension. First floor side extension. Roof extension involving side and rear wraparound dormer and side gable windows. New front porch with associated steps and railings

  Awaiting decision Householder Extension Loft or dormer +1
  Small domestic

• 47 Warwick Avenue Edgware HA8 8UN

  25/4472/HSE Submitted 10 Nov 2025 43m away

  77% historically approved · decision due ~13 Jan

  Part single part two storey side and rear extensions following demolition of the existing garage. Roof extension involving hip to gable, rear dormer window and 3no. front facing rooflights. New front porch

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

• 41 Warwick Avenue Edgware HA8 8UN

  26/2008/HSE Submitted 29 May 2026 51m away

  Part single, part two storey front, side and rear extensions with new raised rear terrace with access steps following demolition of the existing detached side garage and shed

  Granted Householder Extension Demolition 10 docs
  Small 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