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Planning application

70 Castellain Road London W9 1EX

Granted Westminster 25/05836/FULL Full Planning Permission Application

Works: Extension Loft or dormer

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Erection of new front dormer; erection of extension to rear roof slope; removal of chimney to rear; installation of raised parapet wall along west elevation with associated railings above parapet wall along the side and rear to form terrace on rear roof.

As published by the council, reference 25/05836/FULL

Application record

Reference
25/05836/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
18 Aug 2025
Validated
28 Aug 2025
Decided
21 Oct 2025
Ward
Maida Vale
Decision by
Complex Delegated Decision
Postcode
W9 1EX

Site history

Applications at this address on the Westminster register

This site has had 2 applications since 2008: 2 approved, 0 refused.

  • 08/06159/FULL Granted

    70 Castellain Road London W9 1EX

    Erection of new dormer window to front roofslope.

    Decided 26 Sep 2008 Full applications

Timeline

Dates from the published record

  1. 18 Aug 2025

    Received by Westminster

  2. 28 Aug 2025

    Validated

    Checked as complete and ready for consideration.

  3. 21 Oct 2025

    Decision issued: Application Permitted

  4. 21 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

KRN Design Studio Agent, a design practice registered in Watford

Active · incorporated 2021 · Watford

48 applications on PlanIndex · across 12 councils · 77% granted

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Documents

Plans, drawings, consultee responses and the officer's report

15 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

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What this grant of permission means

Westminster granted permission on 21 October 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

About full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 66 Castellain Road London W9 1EX

    26/01168/TCA Submitted 24 Feb 2026 50 yards away

    100% historically approved · decision due ~21 Apr

    1 x Eucalyptus gunnii: crown reduce height by 2-3m, not exceeding 30% of crown volume, including selective shortening of extended upper and lateral branches to appropriate growth points in order to retain a balanced, natural crown form suitable to the species. Remove dead, dying, damaged and crossing branches throughout the crown. Light crown lift to achieve a clearance of approximately 2.5-3 metres above ground level, removing only secondary growth where necessary.

    Awaiting decision Trees 6 docs

  • 76 Castellain Road London W9 1EX

    05/03818/FULL Submitted 16 May 2005 50 yards away

    Use of 1st, 2nd and 3rd floors as 3 self contained flats (1x 2 bed, 1x 1 bed and one self-contained studio flat).

    Refused Full applications New dwelling 7 docs

  • 80 Castellain Road London W9 1EX

    06/03070/CLOPUD Submitted 21 Apr 2006 50 yards away

    Modification to internal layout at second and third floor levels to covert 2 x one bedroom flats into 1 x two bedroom maisonette.

    Granted Lawful development New dwelling 6 docs

  • 66 Castellain Road London W9 1EX

    04/07406/TCA Submitted 20 Sep 2004 50 yards away

    1 x Eucalyptus: Reduce crown by 30-40 per cent

    Granted Trees 1 doc

  • 64 Castellain Road London W9 1EX

    10/02770/TCA Submitted 24 Mar 2010 50 yards away

    1x Eucalyptus - removal 1 x cherry - removal

    Granted Trees 2 docs

  • 62 Castellain Road London W9 1EX

    03/03872/FULL Submitted 15 May 2003 50 yards away

    Erection of three storey side extension at first to third floors to provide one residential flat on top of the existing cafe at 12a Lauderdale Parade.

    Refused Full applications Extension 7 docs

In Westminster

  • 26/06295/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Installation of a new shopfront.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06297/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Alterations to rear elevation at basement level comprising repolacement window and installation of double opening door.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06287/FULL Awaiting decision

    Barness Court 6 - 8 Westbourne Terrace London W2 3UW

    Installation of a new riser as per GW10 design comprising a single riser with 7 entries and 9 Taylor valves to be installed. (Linked with 26/06288/LBC)

    Received 14 Sep, published by the council 21 Sep 2026 Full applications
  • 26/06278/FULL Awaiting decision

    40 Wellington Road London NW8 9TJ

    Installation of a new external access ramp/slope to provide accessibility to the Barclays bank ATM.

    Received 14 Sep, published by the council 21 Sep 2026 Full applications
  • 26/06269/FULL Awaiting decision

    Maisonette Basement And Ground Floor 101 Hereford Road London W2 5BB

    Amalgamation of existing lower ground and ground floor maisonette to with the first floor flat to create a single dwelling and associated internal works including creation of a staircase. (Linked with 26/06270/LBC)

    Received 14 Sep, published by the council 21 Sep 2026 Full applications