Planning application
25/01205/FULL
Lord Mayors Residence The Mansion House Mansion House Street London EC4N 8BH
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
Timeline
Dates from the published record
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2 Sep 2025
Received by City of London
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13 Apr 2026
Decision issued: Approved
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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 full applications applications
How this application type works
A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.
Nearby applications
Within 500 metres
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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.
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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.
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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.
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26/00769/LBC Awaiting decision
1 Lombard Street London EC3V 9AA
Internal alterations at basement and ground floor level in association with existing restaurant.
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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.
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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.
Other full applications applications
In City of London
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26/01052/FULL Awaiting decision
55 Mark Lane London EC3R 7NE
Installation of new air condenser units and new railing at the south east part of the flat roof and associated works.
-
26/00826/FULL Granted
88 Wood Street London EC2V 7DA
Installation of a double set of doors to be formed within the existing glazed curtain wall at Level 12 roof terrace.
-
26/00797/FULL Granted
1 London Wall Place London EC2Y 5AU
Installation of three metal mechanical louvred ventilation panels at upper ground level in the Fore Street elevation of 1 London Wall Place.
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26/00113/FULL Granted
Salters Hall Gardens St Alphage Garden London EC2
Landscaping comprising (i) replacing of soft landscaping (12sqm of lawn and 26sqm of planting bed) with 38sqm of paving; (ii) Replacement of 41sqm of gravel surface with soft landscaped area comprising high quality diverse pollinator friendly planting; (iii) Provision of 48m linear of new hedgerow.
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26/00573/FULL Granted
International Financial Centre 25 Old Broad Street London EC2N 1HQ
Installation of a canopy to the eastern elevation of the building.