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 46 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.

• 19 Downhurst Avenue London NW7 3QA

  26/2146/192 Submitted 9 Jun 2026 50 yards 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

• 3 Delamere Gardens London NW7 3EA

  26/2813/HSE Submitted 30 Jul 2026 100 yards 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

  Decided Householder Extension Loft or dormer +2
  Small domestic

• 6 The Circle London NW7 3DX

  26/0822/192 Submitted 4 Mar 2026 150 yards away

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

  Granted Lawful development Extension Loft or dormer +1 7 docs

• 6 The Circle London NW7 3DX

  26/0824/HSE Submitted 4 Mar 2026 150 yards away

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

  Granted Householder Extension Loft or dormer 10 docs
  Small domestic

• 30 Derwent Avenue London NW7 3DZ

  26/0342/HSE Submitted 29 Jan 2026 150 yards 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

• 5 Downhurst Avenue London NW7 3QA

  25/3771/192 Submitted 15 Sep 2025 150 yards away

  80% historically approved · decision due ~11 Nov

  Conversion of the existing garage to habitable room including the partial raising of the roof to provide a flat roof, insertion of window to replace the garage door

  Awaiting decision Lawful development Windows or glazing 17 docs

• 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).

  Received 20 Jul, published by the council 7 Aug 2026 Lawful development
• 26/1362/191 Refused

  145 Cotswold Gardens London NW2 1PL

  Use as a House in Multiple Occupation (HMO) for 6 people

  Received 14 Apr, published by the council 25 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)

  Received 21 May, published by the council 16 Aug 2026 Lawful development
• 26/2392/192 Refused

  6 Mostyn Road Edgware HA8 0JD

  New front hardstanding and vehicular access to provide off-street parking

  Received 23 Jun, published by the council 9 Aug 2026 Lawful development
• 26/2059/192 Refused

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

  Received 3 Jun, published by the council 16 Aug 2026 Lawful development