Scope
Description
Parliament Buildings requires essential conservation cleaning works to address biological growth, carbon soiling, and harmful pollutants that have accumulated on the Portland limestone façades and associated external elements.
The need for intervention is driven by:
•preservation of the building fabric and prevention of long-term decay
•removal of biological growth and harmful pollutants;
•ensuring the building remains safe, structurally sound, and aesthetically appropriate; and
•compliance with heritage management duties for a Grade A listed asset.
The project includes cleaning the front elevation of Parliament Buildings, portico, tower, kerbs, steps, dwarf walls and architectural detailing, excluding areas expressly omitted in the specification. Repointing to approximately 10% of joints is anticipated following cleaning.
A specialist contractor is required due to the conservation sensitivity, the need for controlled methodologies, and the requirement for careful liaison with the Conservation Architect.
To view this notice, please click here:
https://niassembly.delta-esourcing.com/delta/viewNotice.html?noticeId=1014231393
Contract 1
Supplier
Contract value
- £113,200 excluding VAT
- £135,840 including VAT
Above the relevant threshold
Award decision date
13 February 2026
Date assessment summaries were sent to tenderers
13 February 2026
Standstill period
- End: 24 February 2026
- 8 working days
Earliest date the contract will be signed
26 February 2026
Contract dates (estimated)
- 27 February 2026 to 22 May 2026
- 2 months, 24 days
Main procurement category
Services
CPV classifications
- 45216114 - Parliament and public assembly buildings
- 45452000 - Exterior cleaning work for buildings
- 71315000 - Building services
- 90910000 - Cleaning services
- 90911200 - Building-cleaning services
Contract locations
- UKN06 - Belfast
Information about tenders
- 3 tenders received
- 1 tender assessed in the final stage:
- 1 submitted by small and medium-sized enterprises (SME)
- 0 submitted by voluntary, community and social enterprises (VCSE)
- 1 supplier awarded contracts
- 0 suppliers unsuccessful (details included for contracts over £5 million)
Procedure
Procedure type
Open procedure
Supplier
P.G Clarke & Son Ltd.
- Companies House: NI616983
156 Eshnadarragh Road, Rosslea
Enniskillen
BT92 7LB
United Kingdom
Contact name: Jonathan Clarke
Region: UKN0G - Fermanagh and Omagh
Small or medium-sized enterprise (SME): Yes
Voluntary, community or social enterprise (VCSE): No
Supported employment provider: No
Public service mutual: No
Contract 1
Contracting authority
Northern Ireland Assembly
- Public Procurement Organisation Number: PYCW-9139-GQXZ
Northern Ireland Assembly, Parliament Buildings, Stormont
Belfast
BT4 3XX
United Kingdom
Region: UKN06 - Belfast
Organisation type: Public authority - central government