Flat 1 102 - 104 Long Lane London N3 2HX

1. 21 Jan 2026

   Received by Barnet

2. 22 Jan 2026

   Validated

   Checked as complete and ready for consideration.

3. 10 Aug 2026

   Added to PlanIndex

4. 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. 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

• 16 Oakfield Road London N3 2HT

  25/4019/PNH Submitted 3 Oct 2025 128m away

  58% historically approved · decision due ~28 Nov

  Proposed single storey rear extension with a maximum depth of 5.00m, a maximum height of 3.15m and a maximum eaves height of 3.15m

  Awaiting decision Prior approval Extension 4 docs
  Small domestic

• 16 Park Avenue London N3 2EJ

  26/0900/HSE Submitted 10 Mar 2026 157m away

  77% historically approved · decision due ~5 May

  Single storey rear extension with 1no. roof lantern and new patio area

  Awaiting decision Householder Extension Windows or glazing 5 docs
  Small domestic

• First Floor Flat 172 Squires Lane London N3 2QT

  26/2438/FUL Submitted 26 Jun 2026 215m away

  60% historically approved · decision due ~24 Aug

  Roof extension involving rear dormer window and 3no. front facing rooflights

  Awaiting decision Full applications Extension Loft or dormer +1

• Ground Floor Flat 62 Long Lane London N3 2PX

  25/5063/FUL Submitted 17 Dec 2025 219m away

  60% historically approved · decision due ~12 Feb

  Single storey rear extension

  Awaiting decision Full applications Extension 13 docs
  Small domestic

• 9 Cadogan Gardens London N3 2HN

  26/1925/NMA Submitted 21 May 2026 222m away

  71% historically approved · decision due ~16 Jul

  Non material amendment to planning permission 25/3848/HSE dated 04/11/2025 for 'Single storey rear extension with 2no. rooflights. Front porch fenestration and facade alterations'. Amendments includes changes to the design of the rear-facing fenestration including increasing the height of the proposed doors to go up to the underside of the gable roof, increasing the height of the oriel window

  Awaiting decision Amendments Extension Loft or dormer +1 5 docs
  Small domestic

• Ground Floor Flat 121 Etchingham Park Road London N3 2EE

  26/3072/FUL Submitted 20 Aug 2026 237m away

  60% historically approved · decision due ~16 Oct

  Two single storey rear extensions with new patio area

  Awaiting decision Full applications Extension
  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