17 Colindeep Lane London NW9 6DU

1. 22 Jan 2026

   Received by Barnet

2. 10 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 19 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 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.

• 3 The Loning London NW9 6DR

  26/1797/PNH Submitted 13 May 2026 150m away

  58% historically approved · decision due ~8 Jul

  Single storey rear extension with a proposed depth of 5.50 metres, maximum height of 4.00 metres and eaves height of 3.00 metres

  Awaiting decision Prior approval Extension 7 docs
  Small domestic

• 3 The Loning London NW9 6DR

  26/1498/192 Submitted 22 Apr 2026 152m away

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

  Decided Lawful development Extension Loft or dormer +1 7 docs

• 5 The Loning London NW9 6DR

  26/1415/RCU Submitted 16 Apr 2026 154m away

  Change of use of the property from a single family dwelling (Class C3) to a House in Multiple Occupation (HMO) (Class C4) (Retrospective Application)

  Withdrawn Amendments 6 docs
  Domestic

• 3 The Loning London NW9 6DR

  26/2609/HSE Submitted 13 Jul 2026 175m away

  77% historically approved · decision due ~7 Sep

  Single storey side and rear extension with 1no. roof lantern with access steps to garden following demolition of the existing garage (amended description and drawings)

  Awaiting decision Householder Extension Demolition +1
  Small domestic

• 120 Rushgrove Avenue London NW9 6RD

  25/4948/FUL Submitted 10 Dec 2025 226m away

  60% historically approved · decision due ~10 Feb

  Roof extension involving side and rear dormer window with juliette balcony and 1no. rear and 3no. front facing rooflights. New front porch

  Awaiting decision Full applications Extension Loft or dormer +1 11 docs
  Small domestic

• 60 Sheaveshill Avenue London NW9 6RX

  25/4262/192 Submitted 24 Oct 2025 261m away

  Roof extension involving hip to gable with rear dormer windows, 2no. front facing rooflight and 1no. skylight on main roof

  Decided Lawful development Extension Loft or dormer +1 8 docs

• 26/2679/192 Decided

  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 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