26/1389/192

1. 16 Apr 2026

   Received by Barnet

2. 5 May 2026

   Decision issued: Unlawful

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

• 26/2186/192 Awaiting decision

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  Erection of a rear outbuilding

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• TPP/0273/26 Awaiting decision

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  3 x Pine - Reduce the overhang to the drive by 2.0m back to growth points. Reduce the overhang to the neigbours drive by 2.0m back to growth points. Standing in Group G49 of Tree Preservation Order.

  13 May 2026 78m away Trees
• 26/1297/HSE Awaiting decision

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  Roof extension involving hip to gable, 3no. rear box dormers with juliette balcony to middle dormer, 3no. front facing rooflights and new side gable window

  7 Apr 2026 109m away Householder
• TPP/0151/26 Split decision

  4 Applewood Close London N20 9JW

  1 x Horse Chestnut (applicants ref. T1) - Fell to fence height. Standing in Area A2 of Tree Preservation Order. 1 x Prunus (applicants ref. T2) - Fell. Standing in Area A2 of Tree Preservation Order. 1 x Ash (applicants ref. T3) - Fell. Standing in Area A2 of Tree Preservation Order. 1 x Buxas (applicants ref. T4) - Reduce by 10% and trimmed to a nice shape. Standing in Area A2 of Tree Preservation Order. Conifer Group (applicants ref. G1) - Reduce height by 30% to maintain a healthy size. Standing in Area A2 of Tree Preservation Order.

  16 Mar 2026 131m away Trees
• 26/2417/NMA Awaiting decision

  3 Oakleigh Park South London N20 9JS

  Non material amendment to planning permission 26/1023/HSE dated 11/05/2026 for 'Single storey rear extension. Changes to fenestration including new side door and installation of double width garage door to return garage to original use' Amendments includes adding a window to the right hand elevation of the rear extension

  25 Jun 2026 223m away Amendments
• 26/1442/CON Granted

  65 - 67 Oakleigh Park South London N20 9JL

  Submission of details of condition 7 (Hard and Soft Landscaping) and 9 (Capital Asset Value for Amenity Trees (CAVAT)) pursuant to planning permission 23/5241/FUL dated 20/02/2024

  20 Apr 2026 239m away Conditions

• 26/2836/192 Awaiting decision

  20 Derwent Avenue Barnet EN4 8LX

  Roof extension involving rear dormer window with juliette balcony

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• 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

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  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