20/3873

1. 25 Nov 2020

   Received by Brent

2. 21 Jan 2021

   Decision issued: Certificate of Lawfulness - Refused

3. 25 Jul 2026

   Added to PlanIndex

The council refused this application for the reasons set out on the decision notice, which the council portal holds in full. Only the applicant can appeal a refusal; the time limit runs from the decision date and is shorter for householder schemes.

Refusal does not prevent a fresh attempt. Applicants often address the reasons for refusal and resubmit, so a refused scheme is not necessarily the end of proposals for the site.

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

• 26/1378 Awaiting decision

  63 Leigh Gardens, London, NW10 5HN

  Proposed part single part two storey side to rear extension, rear dormer extension and conversion of garage into habitable space with replacement of door with windows to the dwellinghouse.

  2 Jun 2026 0m away Householder
• 24/1710 Granted

  15 Leigh Gardens, London, NW10 5HN

  Alterations to rear extension with sedum roof, rooflight, cladding and fenestration, alterations to rear dormer window, installation and replacement of rooflights, single storey outbuilding, replacement of windows, external wall insulation to rear elevation, rendering and new air source heat pump to front garden of dwellinghouse

  20 Jun 2024 0m away Householder
• 22/3714 Granted

  82 Whitmore Gardens, London, NW10 5HJ

  Demolition of existing conservatory, proposed erection of a single storey rear extension and alteration of ground floor side window to dwellinghouse

  31 Oct 2022 94m away Householder
• 26/0702 Refused

  14 Whitmore Gardens, London, NW10 5HH

  Certificate of lawfulness for proposed single-storey part rear extension, hip-to-gable roof extension with rear dormer extension, alteration of rear roof of ground floor outrigger to flat roof, and 2x front rooflights to dwellinghouse.

  19 Mar 2026 98m away Lawful development
• 26/1263 Granted

  14 Whitmore Gardens, London, NW10 5HH

  Certificate of lawfulness for proposed hip to gable roof-end, rear dormer extension, juliet balcony and 2x front rooflights to dwellinghouse.

  18 May 2026 98m away Lawful development
• 20/4222 Granted

  40 Whitmore Gardens, London, NW10 5HH

  Certificate of lawfulness for proposed single storey extension to dwellinghouse

  21 Dec 2020 98m away Lawful development

• 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