50 Sunbury Avenue London NW7 3SJ

1. 8 Jan 2026

   Received by Barnet

2. 3 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 10 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 31 March 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.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 37 Sunbury Avenue London NW7 3SL

  26/1422/192 Submitted 17 Apr 2026 78m away

  Roof extension involving hip to gable to rear with rear juliette balcony, and 1no. side dormer window on either side. Removal of the existing chimney stack [Amended Description]

  Decided Lawful development Extension Loft or dormer +1 10 docs

• 37 Sunbury Avenue London NW7 3SL

  26/2310/HSE Submitted 18 Jun 2026 155m away

  77% historically approved · decision due ~14 Aug

  Two storey side extension including conversion of the existing garage into habitable room, insertion of window to replace the garage door. Roof extension involving hip to gable to rear with rear juliette balcony, and 1no. side dormer window on either side. Removal of the existing chimney stack

  Awaiting decision Householder Extension Loft or dormer +1 11 docs
  Domestic

• 663A And 665A Watford Way London NW7 3JR

  25/5169/FUL Submitted 24 Dec 2025 162m away

  61% historically approved · decision due ~18 Feb

  Roof extension involving gable end, front and rear dormer window and 1no. rear and front facing rooflight to both properties

  Awaiting decision Full applications Extension Loft or dormer +1 8 docs

• Briardale Edgware Way Edgware HA8 9ST

  25/4722/FUL Submitted 26 Nov 2025 176m away

  61% historically approved · decision due ~21 Jan

  Addtional storeys at third and fourth levels to provide additional 8no. self-contained flats including front and rear extensions, rear balconies, lift shaft and escape stairs. Associated additional refuse/recycling storage

  Awaiting decision Full applications New dwelling Extension 14 docs

• 49 Elmgate Gardens Edgware HA8 9RU

  26/1074/HSE Submitted 20 Mar 2026 176m away

  Roof extension involving hip to gable, rear dormer window with juliette balcony, 3no. front facing rooflights and new side gable window

  Granted Householder Extension Loft or dormer +1 10 docs
  Domestic

• 49 Elmgate Gardens Edgware HA8 9RU

  25/3629/HSE Submitted 3 Sep 2025 176m away

  77% historically approved · decision due ~30 Oct

  First Floor side extensions with 4no. rooflights. Alterations to fenestration to side and rear elevation

  Awaiting decision Householder Extension Loft or dormer +1 7 docs
  Domestic

• 26/1907/191 Decided

  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 Decided

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

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

  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
• 26/1663/192 Decided

  152 Deans Lane Edgware HA8 9NT

  Change of use from single family dwellinghouse (Class C3a) to supported living accommodation Class C3b)

  5 May 2026 Lawful development
• 26/2025/192 Decided

  18 Hale Drive London NW7 3DU

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

  1 Jun 2026 Lawful development