20 Oak Grove London NW2 3LP

1. 16 Dec 2025

   Received by Barnet

2. 10 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 10 February 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. 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

• 20 Oak Grove London NW2 3LP

  26/1540/RCU Submitted 24 Apr 2026 0m away

  71% historically approved · decision due ~22 Jun

  Change of use of the property from a single family dwelling (Class C3) to a 7 bed House in Multiple Occupation (HMO) (Sui Generis). (Retrospective application) Proposed roof extension involving L shaped dormer with juliette balcony

  Awaiting decision Amendments Extension Loft or dormer 20 docs
  Domestic

• 20 Oak Grove London NW2 3LP

  25/4228/192 Submitted 22 Oct 2025 0m away

  Roof extension involving L shaped dormer with juliette balcony

  Decided Lawful development Extension Loft or dormer 14 docs

• 15 Elm Grove London NW2 3AE

  25/4507/FUL Submitted 12 Nov 2025 21m away

  60% historically approved · decision due ~7 Jan

  Change of use from a single dwellinghouse (Use Class C3) to a HMO (House in Multiple Occupation (Use Class C4) for up to 6 people

  Awaiting decision Full applications 15 docs
  Domestic

• 15 Elm Grove London NW2 3AE

  26/3074/RCU Submitted 21 Aug 2026 21m away

  79% historically approved · decision due ~16 Oct

  Change of use from a single dwellinghouse (Use Class C3) to a HMO (House in Multiple Occupation (Use Class C4) for up to 6 people (Retrospective Application)

  Awaiting decision
  Domestic

• 27 Elm Grove London NW2 3AE

  25/5028/RCU Submitted 15 Dec 2025 46m away

  71% historically approved · decision due ~3 Mar

  Change of use from a single dwellinghouse (Use Class C3) to a 6 bed HMO (House in Multiple Occupation (Use Class C4) (Retrospective Application) Associated refuse/recycling and cycle storage

  Awaiting decision Amendments 7 docs
  Domestic

• 5A Oak Grove London NW2 3LS

  25/4940/FUL Submitted 10 Dec 2025 59m away

  60% historically approved · decision due ~4 Feb

  Single storey rear extension with new internal courtyard

  Awaiting decision Full applications Extension 16 docs
  Small domestic

• 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