Scope
Reference
PRJ_178
Description
The City of London Corporation (the City) invites Tenders for the provision of surface refurbishment, replacement of waterproofing membrane and remedial works to drainage infrastructure, and landscaping works to Barbican Podium Phase 2, 1st Priority Zone.
The Barbican Estate is grade 2 listed with a multitude of uses including an arts centre, 2014 dwellings, exhibition halls, cinemas, restaurants theatres, gallery space and a large conservatory. Designed and constructed in the 1960s and 1970s by architects Chamberlin, Powell and Bon the Barbican Estate represents a prominent example of brutalist architecture.
The publicly accessible podium provides a pedestrian only elevated walkway connecting the residential towers, terraces and the Barbican Centre. The existing podium is predominantly made up of brick tiles with areas of defined planting set within the podium. The existing podium deck and waterproofing membrane has become damaged and is leaking into the buildings below including the Exhibition Halls.
The City of London, as the owner and manager of the estate, is currently undertaking a largescale refurbishment of the podium deck. Phase 1 of this refurbishment was completed in 2015, this project will focus on Phase 2; a 18,344sqm area along the northern portion of the estate. Several more phases are expected to be required in order to repair other parts of the podium. An initial feasibility study was undertaken that demonstrated several reasons for this including:
• the drainage system;
• damage to the waterproofing;
• shallow crossfalls;
• detailing of the expansion joints.
The podium deck needs be taken up to replace and repair the damaged waterproofing membrane. Works were completed on phase 1 in 2015. This project builds on the lessons learned from phase 1 for the area identified as phase 2. Surface refurbishment, replacement of waterproofing membrane, remedial works to drainage infrastructure, and landscaping works to Barbican Podium Phase 2, 1st Priority Zone.
The estimated contract value given at sections 31 and 32 is for the full duration of the contract including the maximum possible extensions. The estimated annual contract value is therefore £12,500,000.00.
Total value (estimated)
- £25,000,000 excluding VAT
- £30,000,000 including VAT
Above the relevant threshold
Contract dates (estimated)
- 30 June 2026 to 30 June 2028
- 2 years, 1 day
Main procurement category
Works
CPV classifications
- 45261420 - Waterproofing work
Contract locations
- UKI - London
Participation
Legal and financial capacity conditions of participation
Please refer to the procurement documenation
Technical ability conditions of participation
Please refer to the procurement documenation
Particular suitability
Small and medium-sized enterprises (SME)
Submission
Enquiry deadline
6 August 2025, 12:00pm
Tender submission deadline
13 August 2025, 12:00pm
Submission address and any special instructions
This tendering exercise is being undertaken using the electronic tendering system 'City of London Corporation Sourcing & Contracts Portal' (https://cityoflondon.ukp.app.jaggaer.com/). Suppliers will need to register an interest on the system in order to participate and registration is free
Tenders may be submitted electronically
Yes
Languages that may be used for submission
English
Award decision date (estimated)
15 September 2025
Award criteria
| Name | Description | Type | Weighting |
|---|---|---|---|
| Technical | Suppliers will be required to submit responses to a number of sub-weighted questions relating to: - Relevant Experience & Contract Examples - Method Statement - Programme - Communication & Engagement -... |
Quality | 45% |
| Commercial | Suppliers commercial responses will assessed against a bill of quantities. The commercial assessment methodology is set out in the tender documents. |
Price | 40% |
| Responsible procurement | Suppliers will be required to submit responses to a number of sub-weighted questions relating to: - Minimising Waste - Climate Action - Equality, Diversity & Inclusion - Social Value |
Quality | 15% |
Other information
Payment terms
Please refer to the procurement documentation
Description of risks to contract performance
The contract may require modification in the event of project overrun to ensure continuation of service and technical expertise is retained from the work contractor (for example to provide additional goods, services or works)..
Applicable trade agreements
- Government Procurement Agreement (GPA)
Conflicts assessment prepared/revised
Yes
Procedure
Procedure type
Open procedure
Contracting authority
The Mayor and Commonalty and Citizens of the City of London
- Public Procurement Organisation Number: PYQD-1693-MYXR
PO Box 270
City of London
EC2P 2EJ
United Kingdom
Contact name: andrew stirland
Telephone: 020 7606 3030
Email: andrew.stirland@cityoflondon.gov.uk
Website: https://www.cityoflondon.gov.uk
Region: UKI43 - Haringey and Islington
Organisation type: Public authority - sub-central government