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Construction Contract Leads

Changes to notice

This notice has been edited. The previous version is still available.

End Date has been extended to Monday 10th August 2026 at 12:00 midday.

Scope

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.

Total value (estimated)

• £300,000 excluding VAT
• £360,000 including VAT

Below the relevant threshold

Contract dates (estimated)

• 1 March 2027 to 1 September 2027
• 6 months, 1 day

Main procurement category

Works

CPV classifications

• 42160000 - Boiler installations
• 44621200 - Boilers
• 45259300 - Heating-plant repair and maintenance work
• 45331110 - Boiler installation work

Contract locations

• UKI74 - Harrow and Hillingdon

Participation

Particular suitability

Small and medium-sized enterprises (SME)

Submission

Tender submission deadline

10 August 2026, 12:00pm

Submission address and any special instructions

All tender documents will be made available via the tender portal:

Tenders may be submitted electronically

Yes

Award criteria

Procedure

Procedure type

Below threshold - open competition

Contracting authority

London Borough of Hillingdon

• Public Procurement Organisation Number: PHZZ-4724-NYPH

Civic Centre

Uxbridge

UB8 1UW

United Kingdom

Email: procurement [at] hillingdon.gov.uk

Region: UKI74 - Harrow and Hillingdon

Organisation type: Public authority - sub-central government