26/0905/192

1. 10 Mar 2026

   Received by Barnet

2. 7 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

• 26/1799/PNH Awaiting decision

  30 Summerlee Avenue London N2 9QP

  Single storey rear extension with a maximum proposed depth of 4.05m, maximum height of 3.33m and an eaves height of 3.33m (height of lowered section 3.08m)

  13 May 2026 5m away Prior approval
• 26/2299/PNH Awaiting decision

  30 Summerlee Avenue London N2 9QP

  Single storey rear extension with a proposed depth of 4.05m, maximum height of 3.00m and an eaves height of 3.00m

  18 Jun 2026 39m away Prior approval
• 26/1404/191 Awaiting decision

  Ground Floor And First Floor Flat 45 Park Hall Road London N2 9PT

  Use as 2no. self-contained flats

  16 Apr 2026 54m away Lawful development
• 26/1048/HSE Granted

  55 Summerlee Avenue London N2 9QJ

  Single storey rear extension with 2no. roof lanterns

  18 Mar 2026 106m away Householder
• 26/1649/HSE Awaiting decision

  55 Summerlee Avenue London N2 9QJ

  Single storey rear extension with 2no. roof lanterns. Alterations to the existing patio area. Replacement of existing side store and insertion of 1no. rooflight

  1 May 2026 106m away Householder
• 26/0817/PNE Awaiting decision

  72 - 74 High Road London N2 9PN

  Change of use of first and second floors from offices (Class E) into 2no. self-contained flats (Class C3) Associated refuse/recycling and cycle storage

  4 Mar 2026 175m away Prior approval

• 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