2 Derwent Avenue London NW7 3DZ

1. 2 Feb 2026

   Received by Barnet

2. 4 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 10 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 1 April 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

• 19 Downhurst Avenue London NW7 3QA

  26/2146/192 Submitted 9 Jun 2026 30m away

  79% historically approved · decision due ~4 Aug

  Roof extension with rear dormer windows, 2no. front facing roolights. New side gable window

  Awaiting decision Extension Loft or dormer +1

• 2 Downhurst Avenue London NW7 3QA

  26/2581/HSE Submitted 9 Jul 2026 30m away

  77% historically approved · decision due ~3 Sep

  Single storey rear extension

  Awaiting decision Householder Extension
  Small domestic

• 3 Delamere Gardens London NW7 3EA

  26/2813/HSE Submitted 30 Jul 2026 71m away

  77% historically approved · decision due ~24 Sep

  Single storey front extension incorporating a front porch, raising existing side extension floor level to match main house level, new roof with increased height to the side extension and 2no. rooflights, single storey rear extension with 4no. rooflights with new patio area, access steps to garden and hard and soft landscaping. Changes to fenestration: replacement of existing windows

  Awaiting decision Householder Extension Loft or dormer +2
  Small domestic

• 6 The Circle London NW7 3DX

  26/0822/192 Submitted 4 Mar 2026 121m away

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

  Decided Lawful development Extension Loft or dormer +1 7 docs

• 6 The Circle London NW7 3DX

  26/0824/HSE Submitted 4 Mar 2026 122m away

  77% historically approved · decision due ~30 Apr

  Single storey side extension with crown roof and 1no. rooflight

  Awaiting decision Householder Extension Loft or dormer 7 docs
  Small domestic

• 30 Derwent Avenue London NW7 3DZ

  26/0342/HSE Submitted 29 Jan 2026 124m away

  77% historically approved · decision due ~26 Mar

  Single storey rear extension with 2no. rooflights. Conversion and extension of the existing integral store into habitable space, replacement of garage door with window

  Awaiting decision Householder Extension Loft or dormer +1 12 docs
  Small 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