20/4153

1. 16 Dec 2020

   Received by Brent

2. 4 Jan 2021

   Validated

   Checked as complete and ready for consideration.

3. 25 Feb 2021

   Decision issued: Certificate of Lawfulness - Granted

4. 2 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

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

• 20/3382 Refused

  54 Lavender Avenue, London, NW9 8HE

  Prior approval for a single storey rear extension to dwellinghouse, in metres: Extending beyond the rear wall of the original house - 6m Maximum height - 3m Eaves height - 3m

  19 Oct 2020 0m away Prior approval
• 20/3521 Granted

  54 Lavender Avenue, London, NW9 8HE

  Prior approval for a single storey rear extension to dwellinghouse, in metres: Extending beyond the rear wall of the original house - 6m Maximum height - 3m Eaves height - 2.88m

  30 Oct 2020 0m away Prior approval
• 20/3781 Granted

  67 Lavender Avenue, London, NW9 8HG

  Certificate of lawfulness proposed for a single-storey outbuilding to the dwellinghouse.

  19 Nov 2020 58m away Lawful development
• 20/3110 Granted

  3 Alington Crescent, London, NW9 8JL

  Proposed two storey side extension, and part two storey part single rear extension to dwellinghouse

  29 Sep 2020 80m away Householder
• 20/2266 Withdrawn

  3 Alington Crescent, London, NW9 8JL

  Proposed two storey side extension and single storey rear extension with part first floor rear extension to dwellinghouse

  29 Jul 2020 80m away Householder
• 26/0860 Granted

  1 Langdon Drive, London, NW9 8NS

  Proposed demolition of rear conservatory, erection of single storey rear extension and front porch with 1x rooflight to dwellinghouse

  2 Apr 2026 98m away Householder

• 26/1465 Granted

  8 Roe Green, London, NW9 0NY

  Certificate of lawfulness for proposed hip to gable extension and rear dormer window with 3x front rooflights to the dwellinghouse.

  10 Jun 2026 Lawful development
• 26/1370 Granted

  45 Holmstall Avenue, Edgware, HA8 5JQ

  Certificate of lawfulness for proposed use of dwellinghouse as a childrens' residential home

  1 Jun 2026 Lawful development
• 26/1260 Granted

  18 Hartland Road, London, NW6 6BJ

  Certificate of lawfulness for proposed air source heat pump to rear of dwellinghouse

  18 May 2026 Lawful development
• 26/1901 Awaiting decision

  176 Bridgewater Road, Wembley, HA0 1AR

  Certificate of lawfulness for proposed single-storey rear extension, rear dromer extension and 2x front rooflights to dwellinghouse.

  26 Jul 2026 Lawful development
• 26/1353 Granted

  4 Hardinge Road, London, NW10 3PJ

  Certificate of lawfulness for proposed conversion of existing garage into a habitable room with replacement of garage door with window to side elevation and removal of ground floor side window of the dwellinghouse

  29 May 2026 Lawful development