26/2191/192

1. 12 Jun 2026

   Received by Barnet

2. 25 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

This application is with Barnet for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

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

• 26/0885/HSE Awaiting decision

  73 Derwent Avenue Barnet EN4 8LY

  Single storey side extension

  9 Mar 2026 47m away Householder
• 26/1619/192 Decided

  81 Avondale Avenue Barnet EN4 8NA

  Roof extension involving hip to gable, rear dormer window, 2no. front facing rooflights and new side gable window

  29 Apr 2026 94m away Lawful development
• 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 124m 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 130m 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 130m away Householder
• 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 174m 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