20/3549

1. 2 Nov 2020

   Received by Brent

2. 11 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

• 26/1210 Refused

  220 High Street, London, NW10 4SY

  Proposed conversion of existing office into 1x ground floor self-contained flat with alterations to fenestration.

  13 May 2026 0m away Full applications
• 26/1554 Awaiting decision

  Flat 1-4, 203 High Street, London, NW10 4TE

  Variation of condition 2 (drawings and drawing numbers), to allow: Internal reconfiguration of the flats of Full Planning Permission reference 24/0801 dated 28/10/2024 for Construction of mansard roof extension to second floor front elevation to facilitate the enlargement of existing four self-contained flats, with associated balconies and obscure glazed partition screens.

  18 Jun 2026 38m away Amendments
• 20/2532 Granted

  Flat 1-4 inc, 203 High Street, London, NW10 4TE

  Construction of a mansard roof extension to the second floor front elevation to facilitate the enlargement of existing four self-contained flats, with associated balconies and obscure glazed partition screens.

  18 Aug 2020 38m away Full applications
• 20/4141 Granted

  99 Rucklidge Avenue, London, NW10 4QB

  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 - 2.9m

  15 Dec 2020 56m away Prior approval
• 20/3096 Granted

  101 Rucklidge Avenue, London, NW10 4QB

  Proposed first floor rear extension to dwellinghouse

  29 Sep 2020 56m away Householder
• 20/4139 Granted

  99 Rucklidge Avenue, London, NW10 4QB

  Certificate of lawfulness for proposed demolition of existing rear extension and erection of a new single storey rear extension, rear dormer with juliet balcony, 3 front rooflights and first floor rear elevation changes to include insertion of a new window and relocation of an existing window to dwellinghouse

  15 Dec 2020 56m 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