26/0947/192

1. 12 Mar 2026

   Received by Barnet

2. 6 May 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

• 26/0948/192 Decided

  18 Sydney Grove London NW4 2EH

  Roof extension involving hip to gable with 1no. rear dormer window over main roof and 1no. rear dormer over outrigger roof and 3no. front facing rooflights

  12 Mar 2026 10m away Lawful development
• 26/1984/FUL Awaiting decision

  24 Sydney Grove London NW4 2EH

  Amalgamation of existing 2no. flats into 1no. single family dwellinghouse

  28 May 2026 15m away Full applications
• 26/2605/HSE Awaiting decision

  11 West View London NW4 2SY

  Two storey rear extension with pitched roof. Roof extension involving hip to gable, rear dormer window and 2no. front facing rooflights

  10 Jul 2026 150m away Householder
• 26/1262/HSE Granted

  25 Wykeham Road London NW4 2TB

  Single storey rear extension following demolition of the existing conservatory

  2 Apr 2026 182m away Householder
• 26/1085/NMA Granted

  39 Brent Street London NW4 2ED

  Non material amendment to planning permission 24/4115/S73 dated 15/01/2025 for 'Variation of condition 1 (Approved Plans) of planning permission reference 22/5168/FUL dated 26/04/2023 for 'Demolition of the existing building and the erection of a 4no. storey building with a basement to provide commercial space (Class E) at part ground and basement levels and 5no. residential dwellings (Class C3) above with associated refuse storage and cycle parking.' Variation to include the addition of a phasing condition to allow the development to be implemented in two phases: Phase 1 - Demolition of existing building and Phase 2 - Construction of development

  20 Mar 2026 225m away Amendments
• 26/2791/192 Awaiting decision

  37 Wykeham Road London NW4 2SS

  Roof extension involving box dormer infill to second floor balcony area and 1no. side facing window to both elevations (amended description)

  29 Jul 2026 243m away Lawful development

• 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