57 Belmont Avenue Barnet EN4 9JS

1. 11 Nov 2025

   Received by Barnet

2. 12 Nov 2025

   Validated

   Checked as complete and ready for consideration.

3. 16 Dec 2025

   Decision issued: Lawful

4. 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

• 57 Belmont Avenue Barnet EN4 9JS

  25/4792/HSE Submitted 1 Dec 2025 0m away

  77% historically approved · decision due ~2 Feb

  Single storey rear extension with pitched roof, 2no. rooflights and alterations to patio area and access steps

  Awaiting decision Householder Extension Loft or dormer 7 docs
  Small domestic

• 65 Belmont Avenue Barnet EN4 9JS

  25/4508/HSE Submitted 12 Nov 2025 40m away

  77% historically approved · decision due ~8 Jan

  Single storey rear extension with new patio area, boundary fence/screen and associated access steps to garden level. New front porch. Roof extension involving rear dormer window and 2no. front facing rooflights (AMENDED DESCRIPTION AND AMENDED PLANS)

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

• 17 Norrys Road Barnet EN4 9JX

  26/0875/192 Submitted 6 Mar 2026 102m away

  Roof extension involving gable end, rear dormer window and 1no. side and 3no. front facing rooflights

  Decided Lawful development Extension Loft or dormer +1 6 docs

• 17 Norrys Road Barnet EN4 9JX

  26/1481/192 Submitted 21 Apr 2026 102m away

  Roof extension involving partial hip to gable, rear dormer window and 4no. front facing rooflights. New side window

  Decided Lawful development Extension Loft or dormer +1 6 docs

• 57 Belmont Avenue Barnet EN4 9JS

  26/3012/192 Submitted 17 Aug 2026 122m away

  79% historically approved · decision due ~12 Oct

  New front porch

  Awaiting decision Extension
  Small domestic

• 59 Belmont Avenue Barnet EN4 9JS

  26/3033/192 Submitted 18 Aug 2026 122m away

  79% historically approved · decision due ~13 Oct

  New front porch

  Awaiting decision Extension
  Small domestic

• 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