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Boiler Plantroom Refurbishment Works at Colley House, Uxbridge

London Borough of Hillingdon

This public procurement record has 2 releases in its history.

TenderUpdate

22 Jul 2026 at 09:53

UK4 - Tender Notice
Tender

08 Jul 2026 at 12:15

UK4 - Tender Notice
Summary of the contracting process

The London Borough of Hillingdon is procuring boiler plantroom refurbishment works at Colley House in Uxbridge. The requirement is to replace the existing communal boiler plant and associated heating infrastructure, creating a fully operational heating and hot water system. The works include new mechanical and electrical services, gas infrastructure and safety systems, Trend building management controls, plantroom ventilation, water treatment and pressurisation equipment, and replacement of 84 heat interface units in occupied homes. The contractor must also remove redundant equipment, carry out associated builders’ works, provide testing, commissioning, certification and documentation, and supply temporary 3kW fan or oil heaters if required during an emergency loss of plantroom equipment. Resident liaison, supervision, labour, materials, equipment and temporary works are included.

The procurement has reached tender: Hillingdon invited offers through a below-threshold open competition, with electronic submission allowed through the council’s tender portal. The submission deadline was 10 August 2026 at 12 noon, following an extension. This is one lot, with an estimated value of £300,000 excluding VAT (£360,000 including VAT). The contract is planned to run from 1 March 2027 to 1 September 2027. Bids are evaluated 50% on price and 50% on quality. The resulting contract will use the JCT 2024 Minor Works Contract with Contractor’s Design. The works must comply with current Building Regulations, British Standards, Gas Safety Regulations, CIBSE guidance, manufacturers’ recommendations and other statutory requirements.

This opportunity suits established boiler and heating contractors able to manage a complete communal plantroom refurbishment rather than a single installation task. Relevant capability includes boiler replacement, commercial gas infrastructure and safety systems, mechanical and electrical services, Trend building management controls, ventilation, water treatment, pressurisation and heat interface unit replacement. Suppliers should be able to coordinate builders’ works, testing, commissioning, certification and technical documentation, while maintaining safe service delivery in occupied dwellings. The requirement also calls for resident liaison and the ability to provide temporary heating equipment during an emergency loss of plantroom capacity. Contractors need sufficient labour, plant, equipment, supervision and temporary works capability, together with experience delivering work to statutory, British Standard, CIBSE and manufacturer requirements. Small and medium-sized enterprises are identified as suitable.

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Notice Information

Notice Title

Boiler Plantroom Refurbishment Works at Colley House, Uxbridge

Notice Description

The London Borough of Hillingdon (the Council) invites tenders from suitably qualified and experienced Boiler Contractors in relation to entering into an agreement for the works of the complete refurbishment of the existing communal boiler plantroom and associated heating infrastructure at Colley House. The works comprise the complete refurbishment of the existing communal boiler plantroom and associated heating infrastructure at Colley House. The Contractor shall provide all labour, materials, plant, equipment, supervision, temporary works, testing, commissioning, certification, documentation, builder's works and resident liaison services necessary to deliver a fully operational heating and hot water system. The works include: * Replacement of the existing boiler plant. * Replacement of associated mechanical and electrical services. * New gas infrastructure and gas safety systems. * New Trend BMS controls. * New plantroom ventilation system. * New water treatment and pressurisation equipment. * Replacement of 84 Heat Interface Units (HIUs) within occupied dwellings. * Removal of redundant equipment and associated builders' works. * Issuing temporary 3kw fan / Oil heaters to residents and Lease Holders if required or total emergency loss of plantroom equipment. All works shall comply with current Building Regulations, British Standards, Gas Safety Regulations, CIBSE Guidance, manufacturers' recommendations and all other statutory requirements. Hillingdon will enter into a contract with the successful Contractor(s) which shall be based on JCT 2024 Minor Works Contract with Contractors Design.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-06c63a
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/068984-2026
Current Stage
Tender
All Stages
Tender

Procurement Classification

Notice Type
UK4 - Tender Notice
Procurement Type
Standard
Procurement Category
Works
Procurement Method
Open
Procurement Method Details
Below threshold - open competition
Tender Suitability
SME
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

42 - Industrial machinery

44 - Construction structures and materials; auxiliary products to construction (except electric apparatus)

45 - Construction work

CPV Codes

42160000 - Boiler installations

44621200 - Boilers

45259300 - Heating-plant repair and maintenance work

45331110 - Boiler installation work

Notice Value(s)

Tender Value
£300,000 £100K-£500K
Lots Value
£300,000 £100K-£500K
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
22 Jul 20261 months ago
Submission Deadline
10 Aug 2026Expired
Future Notice Date
Not specified
Award Date
Not specified
Contract Period
1 Mar 2027 - 1 Sep 2027 6-12 months
Recurrence
Not specified

Notice Status

Tender Status
Active
Lots Status
Active
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
London Borough of Hillingdon
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
UXBRIDGE
Postcode
UB8 1UW
Postcode Area
Southall
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI7 Outer London - West and North West
Small Region (ITL 3)
TLI74 Harrow and Hillingdon
Delivery Location
TLI74 Harrow and Hillingdon
Local Authority
Hillingdon
Electoral Ward
Uxbridge
Westminster Constituency
Uxbridge and South Ruislip

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.

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