456 Long Lane London N2 8JL

This site has had 2 applications since 2026: 1 approved, 1 refused.

• 26/2154/HSE Refused

  456 Long Lane London N2 8JL

  Single storey rear/side extension

  Decided 12 Aug 2026 Householder

1. 18 Mar 2026

   Received by Barnet

2. 11 May 2026

   Decision issued: Lawful

3. 25 Jul 2026

   Added to PlanIndex

Barnet granted permission on 11 May 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

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.

• 456 Long Lane London N2 8JL

  26/2154/HSE Submitted 10 Jun 2026 50 yards away

  Single storey rear/side extension

  Refused Householder Extension 8 docs
  Small domestic

• 18 Trinity Road London N2 8JJ

  25/4320/NMA Submitted 29 Oct 2025 100 yards away

  Non material amendment to planning permission 23/2747/HSE dated 18/08/2023 for `Part single, part two storey rear extension with 1no. rooflight` Amendments include removal of first floor extension and reduction of ground floor extension footprint

  Granted Amendments Extension Loft or dormer 4 docs

• 391 Long Lane London N2 8JN

  21/5608/192 Submitted 21 Oct 2021 150 yards away

  Roof extension involving L shaped rear dormer window and 2no front facing rooflights

  Granted Lawful development Extension Loft or dormer +1 20 docs

• 4 - 5 King Street London N2 8DY

  26/1887/S73 Submitted 19 May 2026 150 yards away

  95% historically approved · decision due ~22 Jul

  Removal of condition 5 (Parking space) pursuant to planning pemission 21/0953/FUL dated 22/02/2021 for `Construction of a new roof including increase in ridge height with gable roof feature to front and rear elevations together with 2no dormer windows to rear elevation and one velux window to front elevation to facilitate creation of 1no. self-contained flat with associated parking space, bin store and cycle storage. Alteration to existing front fenestration with provision of Juliette balconies and front porch.`

  Awaiting decision Conditions Extension Loft or dormer +2 4 docs
  Small domestic

• 56 Leopold Road London N2 8BG

  26/0764/192 Submitted 27 Feb 2026 150 yards away

  Changes to rear fenestration

  Granted Lawful development Windows or glazing 5 docs

• 17 New Trinity Road London N2 8EE

  26/1851/192 Submitted 18 May 2026 150 yards away

  Roof extension involving rear dormer with juliette balcony and 1no. rooflight, outrigger dormer, and 3no. front facing rooflights. (amended)

  Granted Lawful development Extension Loft or dormer 7 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
• 26/1907/191 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
• 26/2059/192 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
• 26/2066/192 Granted

  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)

  Received 3 Jun, published by the council 16 Aug 2026 Lawful development
• 26/2525/192 Granted

  39 Ridgeway Avenue Barnet EN4 8TN

  Single storey rear extension

  Received 6 Jul, published by the council 9 Aug 2026 Lawful development