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Planning application

15 Belsize Park Mews London NW3 5BL

Granted Camden 2023/3492/P Full applications

Works: Extension Windows or glazing

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

Proposal

Erection of roof extension, new basement level, alterations to fenestration and associated works.

As published by the council, reference 2023/3492/P

Application record

Reference
2023/3492/P
Category
Full applications
Status
Final Decision
Decision
Granted As published: Granted Subject to a Section 106 Legal Agreement
Decided
7 Aug 2024
Postcode
NW3 5BL

Site history

Applications at this address on the Camden register

This site has had 2 applications since 2024: 1 approved, 0 refused.

  • 2026/3909/P Awaiting decision

    15 Belsize Park Mews London NW3 5BL

    Variation of Condition 2 (Approved Plans) of planning reference 2023/3492/P dated 07/08/26 for erection of roof extension, new basement level, alterations to fenestration and associated works. NAMELY: to allow revisions to the external architectural treatment of approved development.

    Submitted 10 Sep 2026 Amendments

Timeline

Dates from the published record

  1. 7 Aug 2024

    Decision issued: Granted Subject to a Section 106 Legal Agreement

  2. 22 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

1 later application on the register refers to this one:

  • 2026/3909/P Awaiting decision

    15 Belsize Park Mews London NW3 5BL

    Variation of Condition 2 (Approved Plans) of planning reference 2023/3492/P dated 07/08/26 for erection of roof extension, new basement level, alterations to fenestration and associated works. NAMELY: to allow revisions to the external architectural treatment of approved development.

    Submitted 10 Sep 2026 Amendments

What this grant of permission means

Camden granted permission on 7 August 2024, 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

  • 15 Belsize Park Mews London NW3 5BL

    2026/3909/P Submitted 10 Sep 2026 50 yards away

    99% historically approved · decision due ~9 Nov

    Variation of Condition 2 (Approved Plans) of planning reference 2023/3492/P dated 07/08/26 for erection of roof extension, new basement level, alterations to fenestration and associated works. NAMELY: to allow revisions to the external architectural treatment of approved development.

    Awaiting decision Amendments Extension Windows or glazing 13 docs

  • 1 Baynes Mews London NW3 5BH

    2026/2015/P Submitted 19 May 2026 50 yards away

    Erection of rear dormers, creation of sunken roof terrace, installation of rooflights and replacement of garage door.

    Granted Householder Loft or dormer 25 docs
    Domestic

  • 2 Baynes Mews London NW3 5BH

    2026/0796/P Submitted 27 Feb 2026 50 yards away

    Erection of rear dormers, creation of sunken roof terrace, installation of rooflights, conversion of garage into habitable room and replacement of garage door.

    Granted Householder Loft or dormer 23 docs
    Domestic

  • 3 Baynes Mews London NW3 5BH

    2023/1043/P 50 yards away

    Garage conversion into habitable space and continued use of the property as a single dwellinghouse, installation and replacement of windows on the front elevation at first floor level and replacement of the front door and garage doors at ground floor level.

    Granted Full applications Windows or glazing
    Small domestic

  • 3 Baynes Mews London NW3 5BH

    2024/0923/P Submitted 7 Mar 2024 50 yards away

    Details of secure and covered cycle storage area required by condition 4 (cycle storage) of planning permission 2023/4925/P dated 04/03/2024 (for the variation of condition 2 (approved plans) of planning permission 2023/1043/P for 'Garage conversion into habitable space and continued use of the property as a single dwellinghouse, installation and replacement of windows on the front elevation at first floor level and replacement of the front door and garage doors at ground floor level', namely to erect a rear dormer and enlarge the timber entrance door.)

    Granted Full applications Loft or dormer Windows or glazing 1 doc
    Small domestic

  • 3 Baynes Mews London NW3 5BH

    2023/4925/P Submitted 17 Nov 2023 50 yards away

    Variation of condition 2 (approved plans) of planning permission 2023/1043/P for 'Garage conversion into habitable space and continued use of the property as a single dwellinghouse, installation and replacement of windows on the front elevation at first floor level and replacement of the front door and garage doors at ground floor level', namely to erect a rear dormer and enlarge the timber entrance door.

    Granted Amendments Loft or dormer Windows or glazing 14 docs
    Small domestic

In Camden

  • 2026/0990/P Refused

    1 Bleeding Heart Yard & 19 Greville Street London EC1N 8SJ

    Change of use from office space and restaurant use (Class E) and members club (Sui Generis) to affordable workspace and restaurant use (Class E) and 1 x residential unit on the third and fourth floors (Class C3). Erection of a two-storey roof extension across 19 Greville Street and 1 Bleeding Heart Yard, including alterations at second-floor level to the interior courtyard elevation, ground-floor fenestration changes, and a roof terrace for the associated residential unit.

    Received 26 Mar, published by the council 24 Jul 2026 Full applications
  • 2026/3044/P Granted

    London Irish Centre 50-52 Camden Square London NW1 9XB

    Details to discharge Condition 25 Part A (Air Quality Monitoring) of planning permission ref. 2020/1481/P dated 17/05/24 for 'Redevelopment of site to provide new and reconfigured community centre and ancillary residential accommodation (Class D1/ D2) involving alterations to retained buildings at No's. 50, 51 and 52 Camden Square including replacement of two storey 'link' building; demolition of Murray Street and Murray Mews buildings and replacement with part-three / part-four storey building (plus basement level) with second and third floor terraces and new entrance; associated landscaping and cycle parking'.

    Received 20 Jul, published by the council 2 Aug 2026 Full applications
  • 2026/4338/P Awaiting decision

    32 Willoughby Road London NW3 1RU

    Details to discharge condition 6 (tree protection methods) of planning permission 2025/4186/P granted 13/11/2025 for 'Demolition of existing two storey outrigger and replacement with part two-storey, part single storey rear extension, loft conversion with dormer and roof light to main roof at rear, new windows to flanking wall, replacement of existing windows and installation of a gate and fence to side'.

    Received 5 Oct, published by the council 9 Oct 2026 Full applications
  • 2026/4141/P Awaiting decision

    24 Endell Street London WC2H 9HQ

    Relocation of three air conditioning condenser units to first floor roof, construction of an acoustic enclosure and other associated works.

    Received 5 Oct, published by the council 9 Oct 2026 Full applications
  • 2026/3907/P Awaiting decision

    Flat 1 16 Lyndhurst Road London NW3 5NL

    External renovations to the front of the property, including works to the entry porch, steps, replacment front door, installation of metal railings to boundary wall and paving to front garden and erection of a glass roof to the side passage to create a bike shelter.

    Received 5 Oct, published by the council 9 Oct 2026 Full applications