26/0866/192

1. 6 Mar 2026

   Received by Barnet

2. 28 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

• 26/0865/HSE Granted

  63 Church Crescent London N3 1BL

  Single storey side and rear extension following demolition of the existing garage

  6 Mar 2026 0m away Householder
• 26/2011/NMA Awaiting decision

  63 Church Crescent London N3 1BL

  Non material amendment to planning permission 26/0865/HSE dated 28/04/2026 for `Single storey side and rear extension following demolition of the existing garage.` Amendments include removal of the proposed window and door and addition of a side rooflight

  29 May 2026 0m away Amendments
• 26/1942/HSE Awaiting decision

  17A Dollis Avenue London N3 1UD

  Single storey side and rear extension and side infill extension with 5no. rooflights and new levelled patio area with associated access steps. Conversion of the existing into habitable room, insertion of window to replace the garage door. Changes to fenestration

  26 May 2026 104m away Householder
• 26/2688/192 Awaiting decision

  20 Clifton Avenue London N3 1BN

  Roof extension involving hip to gable with rear dormer windows and 4no. front facing rooflights

  20 Jul 2026 133m away Lawful development
• 26/1543/S73 Awaiting decision

  22 Dollis Park London N3 1HN

  Variation of condition 1 (Approved plans) of planning permission 26/0274/FUL dated 14.04.2026 for Conversion of existing single family dwellinghouse into 2no. self-contained flats including single storey side infill extension. Associated amenity space, refuse and cycle storage. Variation to include alterations to proposed layout of Flat B, the kitchen/living room to be located on first floor and bedroom on the second floor

  24 Apr 2026 200m away Conditions
• 26/0946/HSE Awaiting decision

  54 Dollis Park London N3 1BS

  Erection of a rear annexe

  12 Mar 2026 216m away Householder

• 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