Room 325 Building 3 North London Business Park Oakleigh Road South London N11 1GN

1. 23 Dec 2025

   Received by Barnet

2. 6 Jan 2026

   Validated

   Checked as complete and ready for consideration.

3. 10 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 3 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

• Building 5 North London Business Park Oakleigh Road South London N11 1BF

  23/0129/S73 Submitted 12 Jan 2023 124m away

  Variation of conditions 2 (Time Limit for Use) and 3 (Use Class) of planning permission reference 16/5027/S73 dated 04/09/2017 for 'Variation of planning permission B/01615/13 dated 25/07/2013 for "Change of use of Building 5 North London Business Park, from Business (B1) to Educational (D1) use for a temporary period (3 years), including external alterations to provide car parking and fencing" Variation include to increase the capacity of the school up to 500 pupils and to enable the school to operate until 31st August 2019.' Variation to include extension of temporary time limit until 31 August 2025 and to amend the use class to F.1

  Granted Conditions Extension 9 docs

• 15 Fernwood Crescent London N20 0RP

  26/0436/HSE Submitted 5 Feb 2026 176m away

  77% historically approved · decision due ~2 Apr

  Single storey rear extension

  Awaiting decision Householder Extension 10 docs
  Small domestic

• 395 Oakleigh Road North London N20 0RS

  26/1986/HSE Submitted 28 May 2026 240m away

  77% historically approved · decision due ~23 Jul

  Single storey rear extension with 1no. roof lantern and new access steps following removal of the existing patio area

  Awaiting decision Householder Extension Windows or glazing 5 docs
  Small domestic

• 45 Brunswick Crescent London N11 1EE

  25/3990/HSE Submitted 1 Oct 2025 246m away

  77% historically approved · decision due ~27 Nov

  Single storey rear extension with 1no. rooflight and alterations to the existing patio area

  Awaiting decision Householder Extension Loft or dormer 5 docs
  Small domestic

• 45 Brunswick Crescent London N11 1EE

  26/0100/CON Submitted 12 Jan 2026 246m away

  95% historically approved · decision due ~9 Mar

  Submission of details of condition 5 (Privacy Screens) pursuant to planning permission 25/3990/HSE dated 27/11/25

  Awaiting decision Conditions 2 docs

• 401 Oakleigh Road North London N20 0RS

  26/2834/192 Submitted 31 Jul 2026 251m away

  79% historically approved · decision due ~30 Sep

  Roof extension involving rear dormer window

  Awaiting decision Extension Loft or dormer +1

• 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