12 Marlborough Avenue Edgware HA8 8UH

This site has had 5 applications since 2025: 2 approved, 1 refused.

• 26/3039/HSE Awaiting decision

  12 Marlborough Avenue Edgware HA8 8UH

  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

  Submitted 18 Aug 2026 Householder
• 26/0630/192 Refused

  12 Marlborough Avenue Edgware HA8 8UH

  Roof extension involving side/rear wraparound dormer

  Decided 15 Apr 2026 Lawful development
• 25/4255/HSE Granted

  12 Marlborough Avenue Edgware HA8 8UH

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

  Decided 13 Jan 2026 Householder
• 25/4254/PNH Granted

  12 Marlborough Avenue Edgware HA8 8UH

  Single storey rear extension with a proposed depth of 6.00m, maximum height of 3.00m and eaves height of 2.70m

  Decided 27 Nov 2025 Prior approval

1. 29 May 2026

   Received by Barnet

2. 25 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 24 July 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 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.

• 12 Marlborough Avenue Edgware HA8 8UH

  26/0630/192 Submitted 18 Feb 2026 0m away

  Roof extension involving side/rear wraparound dormer

  Refused Lawful development Extension Loft or dormer 6 docs

• 12 Marlborough Avenue Edgware HA8 8UH

  25/4255/HSE Submitted 24 Oct 2025 0m 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

  25/4254/PNH Submitted 24 Oct 2025 5m away

  Single storey rear extension with a proposed depth of 6.00m, maximum height of 3.00m and eaves height of 2.70m

  Granted Prior approval Extension 6 docs
  Small domestic

• 12 Marlborough Avenue Edgware HA8 8UH

  26/3039/HSE Submitted 18 Aug 2026 27m 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 38m 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 47m 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

• 26/2679/192 Granted

  21 Myddelton Park London N20 0JH

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

  20 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)

  21 May 2026 Lawful development
• 26/2059/192 Refused

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

  3 Jun 2026 Lawful development
• 26/2066/192 Granted

  355 Hendon Way London NW4 3NB

  Roof extension involving rear dormer window and 3no. front facing rooflights. Removal of chimney on rear elevation (AMENDED DESCRIPTION)

  3 Jun 2026 Lawful development
• 26/2525/192 Granted

  39 Ridgeway Avenue Barnet EN4 8TN

  Single storey rear extension

  6 Jul 2026 Lawful development