456 Long Lane London N2 8JL

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

• 26/1050/192 Granted

  456 Long Lane London N2 8JL

  Roof extension involving rear dormer window with juliette balcony

  Decided 11 May 2026 Lawful development

1. 10 Jun 2026

   Received by Barnet

2. 19 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 12 Aug 2026

   Decision issued: Refuse

4. 16 Aug 2026

   Added to PlanIndex

Barnet refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 456 Long Lane London N2 8JL

  26/1050/192 Submitted 18 Mar 2026 50 yards away

  Roof extension involving rear dormer window with juliette balcony

  Granted Lawful development Extension Loft or dormer +1 7 docs

• 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

• 12 Elmfield Road London N2 8EB

  23/3571/192 Submitted 17 Aug 2023 150 yards away

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

  Granted Lawful development Extension Loft or dormer +1 17 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

• Kingsbury King Street London N2 8DY

  21/5282/HSE Submitted 5 Oct 2021 150 yards away

  Part single part two storey rear extension. Single storey side extension

  Granted Householder Extension 29 docs
  Small domestic

• 4 - 5 King Street London N2 8DY

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

  93% 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

• 26/3827/HSE Awaiting decision

  43 Hermitage Lane London NW2 2HE

  Single storey rear extension with 3no. rooflights following demolition of the existing conservatory. Replacement front bay window and entrance porch. First floor rear juliette balcony. Changes to fenestration including new window openings and enlarged front rooflight

  22 Oct 2026 Householder
• 26/3833/HSE Awaiting decision

  47 Holne Chase London N2 0QG

  Single storey rear extension. Replacement of single glazed windows with double glazing. Alterations to side/rear fenestration. Alterations and replacement of existing rear dormer window addition of 2no. side dormer windows and 3no. rooflights. Installation of cameras and wall lights. Replacement of the front entrance and garage doors, installation of timber side garden gates

  22 Oct 2026 Householder
• 26/3815/HSE Awaiting decision

  17 Hurstwood Road London NW11 0AS

  Single storey rear extension

  21 Oct 2026 Householder
• 26/3800/HSE Awaiting decision

  29 Monks Avenue Barnet EN5 1BZ

  Single storey side and rear infill extension including new front porch following demolition of the side/rear storage.

  Received 20 Oct, published by the council 21 Oct 2026 Householder
• 26/3791/HSE Awaiting decision

  149 Montrose Avenue Edgware HA8 0DZ

  New front hardstanding and vechicular access to provide off-street parking

  Received 20 Oct, published by the council 21 Oct 2026 Householder