18 Redbourne Avenue London N3 2BS

1. 4 Jun 2026

   Received by Barnet

2. 5 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 1 Jul 2026

   Decision issued: Unlawful

4. 16 Aug 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

• 18 Redbourne Avenue London N3 2BS

  26/0832/192 Submitted 5 Mar 2026 4m away

  Erection of a rear outbuilding

  Decided Lawful development 13 docs

• 18 Redbourne Avenue London N3 2BS

  26/2542/192 Submitted 6 Jul 2026 63m away

  79% historically approved · decision due ~1 Sep

  Erection of rear outbuilding

  Awaiting decision

• 25 Redbourne Avenue London N3 2BP

  25/4570/192 Submitted 17 Nov 2025 80m away

  Extension of the existing roof ridge to form rear gable window with new and replacement side facing rooflights. Changes to fenestration to side and rear elevation. Demolition of existing conservatory.

  Decided Lawful development Extension Loft or dormer +2 9 docs

• 3 Redbourne Avenue London N3 2BP

  26/0639/192 Submitted 18 Feb 2026 97m away

  79% historically approved · decision due ~16 Apr

  Roof extension involving rear dormer window, 3no. front facing rooflights and new side gable windows. Erection of a rear outbuilding following demolition of the existing sheds

  Awaiting decision Lawful development Extension Loft or dormer +2 5 docs

• 46A Ballards Lane London N3 2BJ

  26/1505/NMA Submitted 22 Apr 2026 107m away

  Non-material amendments to planning permission reference 25/1684/FUL dated 05.06.25 for 'Single storey front extension. Landscaping and addition of seating to adjacent public realm.' Amendments include change to development description to read "Amalgamation of the existing units to create a new Class E unit, together with single storey front extension, landscaping and addition of seating to adjacent public realm."

  Granted Amendments Extension 4 docs
  Small domestic

• 52A Ballards Lane London N3 2BU

  25/4930/FUL Submitted 9 Dec 2025 109m away

  61% historically approved · decision due ~3 Feb

  Change of first floor use from a single dwellinghouse (Use Class C3) to a 5 bed HMO (House in Multiple Occupation (Use Class C4) for 5 people. Associated refuse/recyling store

  Awaiting decision Full applications 9 docs
  Domestic

• 26/1907/191 Decided

  8 Golders Manor Drive London NW11 9HT

  Use of the property as a self-contained residential unit at ground floor level and the first and second floors as a 4-bedroom, 4-person House in Multiple Occupation (Sui Generis) (AMENDED DESCRIPTION)

  21 May 2026 Lawful development
• 26/2059/192 Decided

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

  3 Jun 2026 Lawful development
• 26/2066/192 Decided

  355 Hendon Way London NW4 3NB

  Roof extension involving rear dormer window and 3no. front facing rooflights. Removal of chimney on rear elevation (AMENDED DESCRIPTION)

  3 Jun 2026 Lawful development
• 26/1663/192 Decided

  152 Deans Lane Edgware HA8 9NT

  Change of use from single family dwellinghouse (Class C3a) to supported living accommodation Class C3b)

  5 May 2026 Lawful development
• 26/2025/192 Decided

  18 Hale Drive London NW7 3DU

  Roof extension involving hip to gable, rear dormer window, 2no. front facing rooflights and new side gable window

  1 Jun 2026 Lawful development