26/0919/192

1. 11 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

• 26/2816/PNH Awaiting decision

  18 Boyne Avenue London NW4 2JN

  2no. Single storey rear extensions with a maximum depth of 6.00m, maximum height of 3.90m and an eaves height 3.00m

  30 Jul 2026 55m away Prior approval
• 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 55m away Lawful development
• 26/1671/192 Awaiting decision

  37 Hillview Gardens London NW4 2JJ

  Roof extension involving rear dormer window and 1no. front facing rooflight

  5 May 2026 88m away Lawful development
• 26/1601/HSE Awaiting decision

  Three Gables Bungalow Boyne Avenue London NW4 2JL

  Single storey front extension including new porch. Single storey rear extensions with new patio area. Alterations to ground levels. Formation of first floor with new pitched gable roof with 2no. front and 2no. rear dormers and 2no. front facing, 2no side rooflights with associated hard and soft landscaping

  28 Apr 2026 91m away Householder
• 26/1639/HSE Awaiting decision

  49 Southbourne Crescent London NW4 2JX

  Lower ground floor storage area, part single, part two-storey, front side and rear extension with associated patio steps following the demolition of the existing garage. Roof extension involving side dormer window, 2no. front and 1no. rear facing rooflight and new side gable window

  30 Apr 2026 145m away Householder
• 26/1133/FUL Awaiting decision

  114 Finchley Lane London NW4 1DG

  Single storey side and rear extension. Two storey side extension. New front bay window extension following removal of existing bay window. Alterations to front entrance

  25 Mar 2026 184m away Full applications

• 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