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Planning application

25/01206/LBC

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

Granted City of London Listed Building Consent

Proposal

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

As published by the council, reference 25/01206/LBC

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

What a grant of permission means

The process from here

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

About heritage and listed buildings applications

How this application type works

Heritage applications concern listed buildings and conservation areas. Listed building consent is needed for works, inside or out, that affect the special interest of a listed building, and carrying out such works without consent is a criminal offence. The council weighs harm to the heritage asset against any public benefit of the proposal.

More on heritage and listed buildings applications in our guide

Nearby applications

Within 500 metres

  • 25/01205/FULL 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.

    2 Sep 2025 0m away Full applications
  • 24/00947/LBC Granted

    The Mansion House Mansion House Street London EC4N 8BH

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

    30 Aug 2024 0m away Heritage and listed buildings
  • 25/01301/5REG Decided

    3 Lombard Street London EC3V 9AA

    Notification in accordance with The Electronic Communications Code, The Electronic Communications Code (Conditions and restrictions) Regulations 2003 (as amended) Regulation 7 & 7A (listed buildings and ancient monuments) and the relevant Planning Act to install fixed line broadband electronic communications apparatus, detailed as install 25 meters of internal cable at the above location, which is a building identified in the statutory list of buildings.

    19 Sep 2025 50m away
  • 26/00769/LBC Awaiting decision

    1 Lombard Street London EC3V 9AA

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

    27 May 2026 50m away Heritage and listed buildings
  • 25/01398/FULL Awaiting decision

    Scottish Provident Building 1 - 6 Lombard Street London EC3V 9AA

    External alterations comprising of: (i) the installation of signage; (ii) the installation of lighting; (iii) the installation of plaques; and (iv) the installation of planters.

    10 Oct 2025 50m away Full applications
  • 25/01399/ADVT Awaiting decision

    Scottish Provident Building 1 - 6 Lombard Street London EC3V 9AA

    The installation and display of: (i) 1x internally illuminated projecting sign measuring 1.17m in width, 0.58m high and at a height of 2.73m above ground level; (ii) 1x internally illuminated fascia sign measuring 3.26m in width, 0.61m high and at a height of 3.82m above ground level; (iii) 1x internally illuminated fascia sign measuring 3.05m 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 internally illuminated Edmondo brass plaque measuring 0.395m in width, 0.23m high, at a height of 1.27m above ground level; (vi) 1x internally illuminated No. 6 brass plaque measuring 0.395m in width, 0.23m high and at a height of 1.27m above ground level.

    10 Oct 2025 50m away Advertising

In City of London

  • 26/00746/LBC Granted

    Offices 4 Moorgate London EC2R 6DA

    Internal refurbishment works to communal areas of existing office building at basement and ground levels and stair and lift cores, including removal and replacement of existing glazed secondary entrance door on Moorgate; refurbishment of existing external entrances on Moorgate and King Arms Yard Entrance; installation of a condenser unit in the basement lightwell; and retrospective consent for replacement of two passenger lifts.

    21 May 2026 Heritage and listed buildings
  • 26/00490/LBC Granted

    312 Cromwell Tower Barbican London EC2Y 8NB

    Refurbishment of the existing bathroom and separate shower/WC, including replacement sanitary ware, finishes, and fittings, together with the installation of new full-height internal doors to both rooms.

    2 Apr 2026 Heritage and listed buildings
  • 26/00785/LBC Granted

    5 St Michael's Alley London EC3V 9DS

    Internal alterations at basement level of Jamaica Wine House associated with refurbishment of customer bar areas and toilets.

    29 May 2026 Heritage and listed buildings
  • 26/00621/LBC Granted

    89 Speed House Barbican London EC2Y 8AU

    Internal alterations to a fifth-floor flat within Speed House, including the partial removal of the existing non-structural outer kitchen partition wall to create open-plan between the kitchen and living room.

    28 Apr 2026 Heritage and listed buildings
  • 26/00522/LBC Granted

    The Irish Chamber 1 Guildhall Yard London EC2V 5AE

    Alterations to a Listed Building including: (i) upgrades to mechanical heating systems, (ii) upgrade to and provision of new ground floor W/C's, (iii) upgrades to electrical wiring, lighting, alarm systems, (iv) installation of L.E.D lighting to replace existing on all floor levels, (v) installation of floor boxes on Ground and First floor levels, (vi) sustainability improvements including sealant to windows (viii) installation of a replacement kitchen alongside retained existing cupboards, (ix) installation of carpet, and; (x) associated minor repairs, redecorating and removal of redundant wiring.

    13 Apr 2026 Heritage and listed buildings