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BidSonar is an independent index of public-sector opportunities. We aggregate data from official sources and are not affiliated with any procurement body. Data is licensed under the Open Government Licence v3.0 and the EU TED reuse notice.

    ContractsMain Contractor for Mansion House Major Refurbishment
    Open tender

    Main Contractor for Mansion House Major Refurbishment

    Contract value
    £30m
    Published 26 May 2026

    Main contractor required for major refurbishment of historic Mansion House including mechanical, electrical, structural and external works, to be completed while the building remains operational.

    🇬🇧United Kingdom· EnglandPublished 26 May 2026· 2 months agoviaFind a Tender
    Contract value
    £30m
    Published 26 May 2026

    Decision brief

    4 fields
    • Contract value
      £30,000,000indicative
      Pounds sterling
    • Closing date
      Rolling
      No closing date published
    • Sector
      Construction
      Browse related listings
    • Location
      🇬🇧United Kingdom
      England

    Lifecycle

    Open

    Open tender — no closing date published. Opened 2 months ago.

    26 May 2026
    Open tender · no closing date published

    Brief

    We are seeking a main contractor for the comprehensive refurbishment of Mansion House, a historic operational building. The scope of works includes: mechanical and electrical systems replacement and upgrade, internal area refurbishment, roof replacement and repairs, external facade cleaning, masonry repairs, and window refurbishment. All works must be carried out within a live, operational historic building, requiring careful planning and coordination. This notice is issued for transparency and market awareness only and does not constitute a formal call for competition. The Authority reserves the right not to proceed. Any future procurement will be published separately and must comply with the Procurement Act 2023. All details including values, scope, and timings are indicative and non-binding.

    Track record

    17 awards · 17 winners
    Open field

    No single supplier dominates the field.

    In construction, THE MAYOR AND COMMONALTY AND CITIZENS OF THE CITY OF LONDON has awarded 17 contracts to 17 suppliers.

    Who wins here
    1. Impero Facilities Ltd1× · 6%
    2. Falcon Structural Repairs Ltd1× · 6%
    3. VENTRO LTD1× · 6%
    4. Lph gas limited1× · 6%
    5. Socotec Asbestos Limited1× · 6%
    6. Sykes & Son Limited1× · 6%

    +11 more suppliers

    Across construction, the most active winners are HOLCIM UK LIMITED, LINDUM GROUP LIMITED, TARMAC TRADING LIMITED — the field to beat, or your route in as a partner.

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    Take action
    View tender on sourceFind a Tender

    Full notice and submission process on the publisher's site

    Publisher
    UK Cabinet Office
    Licence
    OGL v3.0
    Source
    find-tender.service.gov.uk
    Record ID
    ocds-h6vhtk-06a345
    MC
    Buyer
    THE MAYOR AND COMMONALTY AND CITIZENS OF THE CITY OF LONDON
    Sector
    Construction