26/0875/192

1. 6 Mar 2026

   Received by Barnet

2. 9 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 2 Apr 2026

   Decision issued: Unlawful

4. 25 Jul 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

• 26/1481/192 Decided

  17 Norrys Road Barnet EN4 9JX

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

  21 Apr 2026 1m away Lawful development
• 26/1595/RCU Awaiting decision

  18 Carson Road Barnet EN4 9EX

  Retention of existing building with associated roof alterations including lowering the eaves height adjacent to the boundary with 20 Carson Road (AMENDED DESCRIPTION)

  28 Apr 2026 84m away Amendments
• 26/1573/HSE Awaiting decision

  8 Carson Road Barnet EN4 9EX

  New front porch and access ramps with associated handrails to front and rear gardens

  27 Apr 2026 119m away Householder
• 26/0855/192 Decided

  49 Mount Pleasant Barnet EN4 9ES

  Single storey rear extension with access steps to garden

  6 Mar 2026 168m away Lawful development
• 26/1833/192 Awaiting decision

  6 Hamilton Road Barnet EN4 9EU

  Single storey side extension with pitched roof. Roof extension involving hip to gable, rear dormer window with juliette balcony and 2no. front facing rooflights

  15 May 2026 243m away Lawful development
• 26/1431/HSE Awaiting decision

  49 Heddon Court Avenue Barnet EN4 9NG

  Lower ground and ground floor rear extension including formation of rear balcony with privacy screens and underneath storage and associated access steps to garden level

  17 Apr 2026 294m away Householder

• 26/2836/192 Awaiting decision

  20 Derwent Avenue Barnet EN4 8LX

  Roof extension involving rear dormer window with juliette balcony

  31 Jul 2026 Lawful development
• 26/2815/192 Awaiting decision

  18 Boyne Avenue London NW4 2JN

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

  30 Jul 2026 Lawful development
• 26/2824/192 Awaiting decision

  41 Greenway Close London N20 8ES

  Erection of a rear outbuilding

  30 Jul 2026 Lawful development
• 26/2809/192 Awaiting decision

  43A Clifford Road Barnet EN5 5PD

  Single storey rear extension following the demolition of existing canopy

  29 Jul 2026 Lawful development
• 26/2806/192 Awaiting decision

  14 Lincoln Road London N2 9DL

  Roof extension involving 1no. rear dormer window over main roof with juliette balcony and 1no. rear dormer over outrigger roof and 3no. front facing rooflights. Alterations to existing lean-to to form rear extension with flat roof with parapet walls and 1no. skylight. Alterations to fenestration and doors

  29 Jul 2026 Lawful development