26/1172/192

1. 26 Mar 2026

   Received by Barnet

2. 21 Apr 2026

   Decision issued: Lawful

3. 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

• 26/1084/HSE Awaiting decision

  82 Colin Crescent London NW9 6EY

  Single storey rear infill extension with associated access steps and railing. Single storey front porch extension

  20 Mar 2026 21m away Householder
• 26/0878/HSE Granted

  80 Colin Crescent London NW9 6EY

  Single storey rear extension

  9 Mar 2026 27m away Householder
• 26/1490/HSE Awaiting decision

  110 Colin Crescent London NW9 6EX

  Single storey side/rear extension with 2no. rooflights

  22 Apr 2026 116m away Householder
• 26/1025/PNH Refused

  9 Colin Gardens London NW9 6EL

  Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 3.40 metres and eaves height of 3.00 metres, following demolition of the existing extension and garage.

  17 Mar 2026 151m away Prior approval
• 26/1313/192 Decided

  7 Colin Gardens London NW9 6EL

  2no single storey rear extensions (Amended)

  9 Apr 2026 157m away Lawful development
• 26/1324/RCU Awaiting decision

  20 Colin Crescent London NW9 6EY

  Raised rear patio area and canopy (Retrospective Application) Reduction of the height of the side brickwall and installation of privacy screening

  9 Apr 2026 207m away Amendments

• 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