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Planning application

Kelvin House 123 Judd Street London WC1H 9NP

Granted Camden 2025/3810/P Full Planning Permission

Works: Extension

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

Proposal

Partial change of use of building from telephone exchange (Sui Generis) to use as a hotel (Class C1) with retention of existing telephone exchange (Sui Generis) at part of basement and ground floor. Proposed extension with green roofs, PV panels and external alterations to the building. Associated public realm works, including to courtyard. Associated highway and access works RECONSULTATION FOR UPDATED DAYLIGHT/SUNLIGHT REPORT

As published by the council, reference 2025/3810/P

Application record

Reference
2025/3810/P
Type
Full Planning Permission
Status
Final Decision
Decision
Granted As published: Granted Subject to a Section 106 Legal Agreement
Received
1 Sep 2025
Validated
10 Sep 2025
Decided
19 Aug 2026
Ward
Bloomsbury
Decision by
Development Control Committee
Postcode
WC1H 9NP

Site history

Applications at this address on the Camden register

This site has had 4 applications since 2022: 3 approved, 0 refused.

  • 2026/3902/P Awaiting decision

    Kelvin House 123 Judd Street London WC1H 9NP

    Details for condition 10 (Greywater Recycling) and condition 19 (Dust Monitoring) for planning reference 2025/3810/P dated 19/08/2026 for 'Partial change of use of building from telephone exchange (Sui Generis) to use as a hotel (Class C1) with retention of existing telephone exchange (Sui Generis) at part of basement and ground floor. Proposed extension with green roofs, PV panels and external alterations to the building. Associated public realm works, including to courtyard. Associated highway and access works'

    Submitted 9 Sep 2026 Full applications
  • 2024/2702/P Granted

    Kelvin House 123 Judd Street London WC1H 9NP

    Installation of new and replacement doors and alterations to louvres at ground floor to west elevation

    Decided 20 Aug 2024 Full applications
  • 2020/5154/P Granted

    Kelvin House 123 Judd Street London WC1H 9NP

    Installation of 2x louvres to second floor windows on Judd Street and Bidborough Street elevations.

    Decided 3 Feb 2022 Full applications

Timeline

Dates from the published record

  1. 1 Sep 2025

    Received by Camden

  2. 10 Sep 2025

    Validated

    Checked as complete and ready for consideration.

  3. 24 Jul 2026

    Added to PlanIndex

  4. 19 Aug 2026

    Decision issued: Granted Subject to a Section 106 Legal Agreement

Cases linked to this one on the register

1 later application on the register refers to this one:

  • 2026/3902/P Awaiting decision

    Kelvin House 123 Judd Street London WC1H 9NP

    Details for condition 10 (Greywater Recycling) and condition 19 (Dust Monitoring) for planning reference 2025/3810/P dated 19/08/2026 for 'Partial change of use of building from telephone exchange (Sui Generis) to use as a hotel (Class C1) with retention of existing telephone exchange (Sui Generis) at part of basement and ground floor. Proposed extension with green roofs, PV panels and external alterations to the building. Associated public realm works, including to courtyard. Associated highway and access works'

    Submitted 9 Sep 2026 Full applications

Documents

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

157 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 19 August 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

  • Kelvin House 123 Judd Street London WC1H 9NP

    2024/2702/P 50 yards away

    Installation of new and replacement doors and alterations to louvres at ground floor to west elevation

    Granted Full applications
  • Kelvin House 123 Judd Street London WC1H 9NP

    2020/5154/P 50 yards away

    Installation of 2x louvres to second floor windows on Judd Street and Bidborough Street elevations.

    Granted Full applications Windows or glazing
  • Kelvin House 123 Judd Street London WC1H 9NP

    2026/3902/P Submitted 9 Sep 2026 50 yards away

    91% historically approved · decision due ~12 Nov

    Details for condition 10 (Greywater Recycling) and condition 19 (Dust Monitoring) for planning reference 2025/3810/P dated 19/08/2026 for 'Partial change of use of building from telephone exchange (Sui Generis) to use as a hotel (Class C1) with retention of existing telephone exchange (Sui Generis) at part of basement and ground floor. Proposed extension with green roofs, PV panels and external alterations to the building. Associated public realm works, including to courtyard. Associated highway and access works'

    Awaiting decision Full applications Extension 7 docs
  • Kelvin House 123 Judd Street Camden London WC1H 9NP

    25/06526/OBS Submitted 10 Sep 2025 50 yards away

    Partial change of use of building from telephone exchange (Sui Generis) for use as a hotel (Class C1) with retention of existing telephone exchange (Sui Generis) at part of basement and ground floor. Proposed extension with green roofs, PV panels and external alterations to the building. Associated public realm works, including to courtyard. Associated highway and access works.

    Decided Extension 3 docs
  • Kelvin House, 123 Judd Street, London, WC1H 9NP

    P2025/2594/OBS Submitted 10 Sep 2025 50 yards away

    Observations to adjoining borouugh. Partial change of use of building from telephone exchange (Sui Generis) for use 2025/3810/P

    Decided 1 doc
  • St Pancras International Youth Hostel 79-81 Euston Road London NW1 2QE

    2025/0807/P 50 yards away

    Installation of replacement roof plant incl. air conditioning units (5) and associated duct work/ roof-top safety rail and replacement windows and render on elevations.

    Granted Full applications Roofing Windows or glazing

In Camden

  • 2026/0369/P Granted

    Railway embankment and land west of 49 Adelaide Road London NW3 3QB

    Installation of a new DNO (Distribution Network Operator) cabinet and erection secure access gate to Adelaide Road, erection of staircase to railway embankment, associated works.

    Received 17 Jul, published by the council 24 Jul 2026 Full applications
  • 2026/3694/P Granted

    19 Charterhouse Street London EC1N 6RA

    Details pursuant to condition 19 (external lighting) of planning permission 2025/1683/P, granted subject to a legal agreement on 05/06/2026, for remodelling, refurbishment and extensions (including 3 additional storeys) of the existing building to provide Use Class E (commercial, retail/restaurant and jewellery workspace) and associated landscaping and facade works.

    Received 27 Aug, published by the council 5 Sep 2026 Full applications
  • 2026/3904/P Granted

    14 Templewood Avenue London NW3 7XA

    Details pursuant to Condition 5 (Tree protection measures) of planning permission 2026/2315/P dated 10/08/2026 for "Erection of an orangery/outbuilding in the rear garden."

    Received 9 Sep, published by the council 11 Sep 2026 Full applications
  • 2025/2002/P Granted

    11 Doughty Street London WC1N 2PL

    Change of use from office (Class E) to residential to form a single-family dwelling (Class C3); associated internal and external alterations

    Received 9 May, published by the council 22 Jul 2026 Full applications
  • 2026/3551/P Granted

    19 Charterhouse Street London EC1N 6RA

    Details pursuant to condition 21 (Details of gates/barriers onto Charterhouse Street) of planning permission 2025/1683/P, granted subject to a legal agreement on 05/06/2026, for remodelling, refurbishment and extensions (including 3 additional storeys) of the existing building to provide Use Class E (commercial, retail/restaurant and jewellery workspace) and associated landscaping and facade works.

    Received 19 Aug, published by the council 22 Aug 2026 Full applications