12 West Hill Way London N20 8QP

1. 10 Nov 2025

   Received by Barnet

2. 17 Dec 2025

   Decision issued: Lawful

3. 10 Aug 2026

   Added to PlanIndex

The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.

If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.

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

• 14 West Hill Way London N20 8QP

  26/0126/HSE Submitted 14 Jan 2026 9m away

  77% historically approved · decision due ~17 Mar

  Single storey rear extension with 1no. roof lantern and new terrace area with associated access steps and privacy screening

  Awaiting decision Householder Extension Windows or glazing 14 docs
  Small domestic

• Side Of 2 West Hill Way London N20 8QP

  25/3898/LIC Submitted 22 Sep 2025 67m away

  Installation of 1no. 9m wooden pole

  Decided

• Corner Of Totteridge Lane/side Of 2 West Hill Way London N20 8JH

  25/3637/LIC Submitted 2 Sep 2025 68m away

  Installation of 1no. 9m wooden pole

  Decided 1 doc

• 5 West Hill Way London N20 8QX

  26/0316/192 Submitted 28 Jan 2026 74m away

  79% historically approved · decision due ~25 Mar

  Roof extension involving hip to gable, rear dormer window with juliette balcony and 1no. front and rear facing rooflights

  Awaiting decision Lawful development Extension Loft or dormer +1 4 docs

• 5 West Hill Way London N20 8QX

  26/1053/HSE Submitted 19 Mar 2026 77m away

  77% historically approved · decision due ~15 May

  Roof extension involving hip to gable, rear dormer window, 1no. rooflight on dormer roof with juliette balcony, 1no. front and 1no. replacement side facing rooflight

  Awaiting decision Householder Extension Loft or dormer +1 5 docs
  Domestic

• 33 West Hill Way London N20 8QX

  26/2240/HSE Submitted 16 Jun 2026 152m away

  77% historically approved · decision due ~11 Aug

  Demolition of existing garage and rear extension. Erection of part single, part two-storey side and rear extensions with pitched roofs, entrance canopy, sedum roof and 1no. rooflight. Reinstatement of side entrance door, removal of existing porch enclosure, infilling of side window, and associated alterations to rear hard landscaping to facilitate the proposed layout and access to the garden

  Awaiting decision Householder Extension Loft or dormer +2
  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