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Planning application

Lord Mayors Residence The Mansion House Mansion House Street London EC4N 8BH

Granted City of London 25/01205/FULL Full Planning Permission

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

Proposal

Installation of Air Source Heat Pumps and Photovoltaic panels at roof level and associated infrastructure and works.

As published by the council, reference 25/01205/FULL

Application record

Reference
25/01205/FULL
Type
Full Planning Permission
Status
Decided
Decision
Granted As published: Approved
Received
2 Sep 2025
Validated
2 Sep 2025
Decided
13 Apr 2026
Ward
Walbrook
Decision by
Delegated Decision
Postcode
EC4N 8BH

Site history

Applications at this address on the City of London register

This site has had 2 applications since 2025: 2 approved, 0 refused.

  • 25/01206/LBC Granted

    Lord Mayors Residence The Mansion House Mansion House Street London EC4N 8BH

    Installation of Air Source Heat Pumps and Photovoltaic panels at roof level and associated infrastructure and works.

    Decided 13 Apr 2026 Heritage and listed buildings

Timeline

Dates from the published record

  1. 2 Sep 2025

    Received by City of London

  2. 13 Apr 2026

    Decision issued: Approved

  3. 24 Jul 2026

    Added to PlanIndex

Documents

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

36 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

City of London granted permission on 13 April 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

  • Lord Mayors Residence The Mansion House Mansion House Street London EC4N 8BH

    25/01206/LBC Submitted 2 Sep 2025 50 yards away

    Installation of Air Source Heat Pumps and Photovoltaic panels at roof level and associated infrastructure and works.

    Granted Heritage and listed buildings 38 docs
  • The Mansion House Mansion House Street London EC4N 8BH

    24/00947/LBC Submitted 30 Aug 2024 50 yards away

    Proposed installation of Quattro Seal draughtproofing treatment to windows at The Mansion House.

    Granted Heritage and listed buildings Windows or glazing 22 docs
  • 1 Lombard Street London EC3V 9AA

    26/00769/LBC Submitted 27 May 2026 50 yards away

    Internal alterations at basement and ground floor level in association with existing restaurant.

    Granted Heritage and listed buildings 13 docs
  • Scottish Provident Building 1 - 6 Lombard Street London EC3V 9AA

    25/01398/FULL Submitted 10 Oct 2025 50 yards away

    98% historically approved · decision due ~5 Dec

    The installation of external lighting

    Decided Full applications 14 docs
  • Scottish Provident Building 1 - 6 Lombard Street London EC3V 9AA

    25/01399/ADVT Submitted 10 Oct 2025 50 yards away

    99% historically approved · decision due ~5 Dec

    The installation and display of: (i) 1x externally illuminated projecting sign measuring 0.93m in width, 0.415m high and at height of 2.75m above ground level; (ii) 1x non-illuminated fascia sign measuring 1.560m in width, 0.280m high and at a height of 4.080m above ground level; (iii) 1x non-illuminated fascia sign measuring 2.685m in width, 0.6m high and at a height of 3.82m above ground level; (iv) 1x internally illuminated menu box measuring 0.42m in width, 0.64m high and at a height of 1.425m above ground level; (v) 1x non-illuminated Edmondo brass plaque measuring 0.395m in width, 0.23m high, and at a height of 1.27m above ground level; and (vi) 1x non-illuminated No. 6 brass plaque measuring 0.395m in width, 0.23m high and at a height of 1.27m above ground level.

    Decided 13 docs
  • Scottish Provident Building 1 - 6 Lombard Street London EC3V 9AA

    25/01397/LBC Submitted 10 Oct 2025 50 yards away

    100% historically approved · decision due ~5 Dec

    External alterations comprising of (i) the installation of signage; (ii) the installation of lighting; (iii) the installation of plaques; (iv) the removal of existing signage; (v) the removal of existing shutters; and (vi) the painting of existing window frames, planters, railings, and entrance gates.

    Decided Heritage and listed buildings Windows or glazing 12 docs

In City of London

  • 26/00883/FULL Granted

    Pavement Outside 44 Cheapside London EC2V 6AH

    This application relates to the installation of a modern, multifunction Hub unit featuring an integral advertisement display and defibrillator

    Received 19 Jun, published by the council 24 Jul 2026 Full applications
  • 26/00612/FULL Granted

    Barbican Arts And Conference Centre Silk Street London EC2Y 8DS

    New hard and soft landscaping for the sculpture court to include removal and replacement of all paving with new waterproofing below, new ramps and steps, new raised planting beds, seating, and lighting, proposed parameters for temporary structures and artworks to facilitate continued use of the sculpture court for art installations, works to the staff spaces facades to upgrade glazing and frames to level 2 and other associated works.

    Received 27 Apr, published by the council 24 Jul 2026 Full applications
  • 26/00518/FULL Granted

    200 Aldersgate Street London EC1A 4HD

    Works to create provision of a terrace on the second floor and associated development.

    Received 13 Apr, published by the council 24 Jul 2026 Full applications
  • 26/00959/FULL Granted

    3 - 3A Devonshire Square London EC2M 4YA

    Works to roof comprising: (i) installation of insulation, (ii) installation of ventilation provision, (iii) replacement of roofing membrane and battens, (iv) reinstatement and replacement of slate roof coverings, (v) installation of lead-lined box gutters and sheet coverings, and (vi) associated external alterations.

    Received 6 Jul, published by the council 24 Jul 2026 Full applications
  • 26/00466/FULL Granted

    67 Lombard Street London EC3V 9LJ

    Works comprising: (i) partial removal of louvres on levels 6, 7 and 8. (ii) consolidation of rooftop plant and creation of terrace. (iii) removal of BMU system. (iv) other associated works.

    Received 31 Mar, published by the council 24 Jul 2026 Full applications