26/1619/192

1. 29 Apr 2026

   Received by Barnet

2. 30 Apr 2026

   Validated

   Checked as complete and ready for consideration.

3. 11 May 2026

   Decision issued: Lawful

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

• 26/1780/HSE Awaiting decision

  25 Grange Avenue Barnet EN4 8NJ

  Part single, part two storey side and rear extensions with pitched roof, 2no. rooflights and new access steps to garden level

  12 May 2026 84m away Householder
• 26/2191/192 Awaiting decision

  54 Derwent Avenue Barnet EN4 8LZ

  Roof extension involving rear dormer window with juliette balcony

  12 Jun 2026 94m away Lawful development
• 26/0885/HSE Awaiting decision

  73 Derwent Avenue Barnet EN4 8LY

  Single storey side extension

  9 Mar 2026 111m away Householder
• 26/1532/HSE Awaiting decision

  49 Haslemere Avenue Barnet EN4 8EU

  Single storey rear extension following demolition of the existing lean-to. New front porch

  24 Apr 2026 199m away Householder
• 26/1153/192 Awaiting decision

  46 Haslemere Avenue Barnet EN4 8EZ

  Roof extension involving hip to gable, replacement rear dormer window with juliette balcony and new side gable window

  26 Mar 2026 225m away Lawful development
• 26/1165/HSE Awaiting decision

  46 Haslemere Avenue Barnet EN4 8EZ

  Single storey rear extension with extended raised patio area with glass balustrade and external steps. Part conversion of the existing garage into a habitable room, including alterations to roof

  26 Mar 2026 225m 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