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Proposed basement extension, conversion of dwellinghouse into 5x self contained flats, alteration to existing side-to-rear extension, rear dormer with juliet balcony, dormer to rear outrigger with side juliet balcony, replacement of existing timber sash windows with double glazed timber sash windows to front elevation, first-floor rear juliet balcony and installation of 4x side rooflights to dwellinghouse

138 Walm Lane, London, NW2 4RU

DecidedReference: 26/0541London Borough of Brent

Last published check: 12 Oct 2026, 04:45. Check the council record for more recent changes.

Application timeline

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  1. Application Received Date

    Published milestoneCouncil source

  2. Application Validated Date

    Published milestoneCouncil source

  3. Neighbour Consultation Expiry Date

    Past published deadline

    A published target or deadline. It does not confirm an outcome.

    Council source

  4. Decision Issued Date

    Published milestoneCouncil source

Application summary

Status
Decided
Application type
Full Planning Permission
Received
3 Mar 2026
Validated
20 May 2026
Determination deadline
Not published
Local authority
London Borough of Brent

Application overview

Proposed basement extension, conversion of dwellinghouse into 5x self contained flats, alteration to existing side-to-rear extension, rear dormer with juliet balcony, dormer to rear outrigger with side juliet balcony, replacement of existing timber sash windows with double glazed timber sash windows to front elevation, first-floor rear juliet balcony and installation of 4x side rooflights to dwellinghouse

Proposal details

Reference
26/0541
Alternative references
PP-13886998
Ward
Willesden Green
Agent
CAN ARCHITECTURE ASSOCIATES

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Application location

138 Walm Lane, London, NW2 4RU

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Documents 9 of 9

DocumentPublishedAction
Location planRefused Drawing Plans · PDF15 Jul 2026View
Window detailsRefused Drawing Plans · PDF15 Jul 2026View
Existing & proposed drawingsRefused Drawing Plans · PDF15 Jul 2026View
Final delegated reportReport · PDF15 Jul 2026View
Final decision noticeDecision (Public) · PDF15 Jul 2026View
Comment from transportConsultee Comments (Public) · PDF13 May 2026View
Design & access, heritage & basement impact assessmentRefused Documents · PDF30 Mar 2026View
Sustainability statementRefused Documents · PDF10 Mar 2026View
Application formApplication Form (Public) · PDF3 Mar 2026View

Documents open on the council website. Browse council documents if a link has changed.

Decision & conditions

Permission Refused
Final decision notice
Planning conditions

Conditions aren’t listed here. Read the council decision notice for the full decision and conditions.

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