26/0903/192

1. 10 Mar 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

• 26/0942/HSE Granted

  4 Riverside London NW4 3TX

  Two storey side extension, hip to gable extension to main roof. Changes to fenestration; enlargement of window at front elevation, relocation of the front entrance door

  12 Mar 2026 0m away Householder
• 26/0902/192 Awaiting decision

  4 Riverside London NW4 3TX

  Single storey rear extension. Changes to fenestration: relocation of front entrance door, enlargement of windows to front and new window to rear elevations

  10 Mar 2026 1m away Lawful development
• 26/1906/PNH Awaiting decision

  27 Riverside London NW4 3TU

  Single storey rear extension with a maximum proposed depth of 6.0m, maximum height of 3.95m and an eaves height of 2.59m

  21 May 2026 66m away Prior approval
• 26/2739/PNH Awaiting decision

  11 Layfield Crescent London NW4 3UJ

  Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 3.00 metres and eaves height of 3.00 metres, following demolition of the existing garage.

  24 Jul 2026 66m away Prior approval
• 26/2497/192 Awaiting decision

  27 Riverside London NW4 3TU

  Single storey rear extension with 2no. rooflights

  2 Jul 2026 67m away Lawful development
• 26/2756/192 Awaiting decision

  66 Layfield Road London NW4 3UG

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

  24 Jul 2026 177m away Lawful development

• 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