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Planning application

15 Belsize Avenue London NW3 4BL

Granted Camden 2025/5602/P Full Planning Permission

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

Proposal

Installation of new air source heat pumps and installation of new twin wall flue

As published by the council, reference 2025/5602/P

Application record

Reference
2025/5602/P
Type
Full Planning Permission
Status
Final Decision
Decision
Granted
Received
12 Dec 2025
Validated
16 Dec 2025
Decided
11 Mar 2026
Ward
Belsize
Decision by
Delegated
Postcode
NW3 4BL

Site history

Applications at this address on the Camden register

This site has had 3 applications since 2012: 3 approved, 0 refused.

  • 2013/4643/P Granted

    15 Belsize Avenue London NW3 4BL

    Installation of four velux rooflights to the top of four roof accesses (one rooflight on each access) of flats (Class C3).

    Decided 16 Sep 2013 Full applications
  • 2012/4049/P Granted

    15 Belsize Avenue London NW3 4BL

    Replacement of existing aluminium and timber windows of flats 1-28 to front and rear elevations with double glazed windows.

    Decided 11 Oct 2012 Full applications

Timeline

Dates from the published record

  1. 12 Dec 2025

    Received by Camden

  2. 16 Dec 2025

    Validated

    Checked as complete and ready for consideration.

  3. 11 Mar 2026

    Decision issued: Granted

  4. 9 Aug 2026

    Added to PlanIndex

Documents

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

13 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.

Watch members (£5 a month) open the document list from here.

Open the documents

What this grant of permission means

Camden granted permission on 11 March 2026, 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

  • Flats 1-28 15 Belsize Avenue London NW3 4BL

    2012/0978/P 50 yards away

    Installation of communal digital TV reception equipment including 2 satellite dishes, an aerial and associated equipment including an external cabinet and cable runs to each residential flat (Class C3).

    Granted Full applications
  • 15 Belsize Avenue London NW3 4BL

    2013/4643/P 50 yards away

    Installation of four velux rooflights to the top of four roof accesses (one rooflight on each access) of flats (Class C3).

    Granted Full applications New dwelling Loft or dormer
  • 15 Belsize Avenue London NW3 4BL

    2012/4049/P 50 yards away

    Replacement of existing aluminium and timber windows of flats 1-28 to front and rear elevations with double glazed windows.

    Granted Full applications New dwelling Windows or glazing
  • 1 Belsize Avenue London NW3 4BL

    2010/5623/T 50 yards away

    (TPO - 23H-T95) FRONT GARDEN - 1 x Mulberry - Reduce by 20% to previous pruning points.

    Refused Trees
  • 1 Belsize Avenue London NW3 4BL

    2011/0145/T 50 yards away

    (TPO Ref: 23H) FRONT GARDEN - 1 x Mulberry - Lift lower hanging branches. Trim back small branches overhanging the road to the line of the curb. Trim back light sprouting growth on lower trunk.

    Granted Trees
  • 23 Belsize Avenue London NW3 4BL

    2018/3921/T Submitted 13 Aug 2018 50 yards away

    REAR GARDEN: 1 x Multi-Stemmed Ash (T1) - Fell to ground level and treat stump

    Granted Trees 4 docs

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