Named supplier in construction contracts
Naming suppliers allows the client to influence the main contractor's selection of suppliers, whilst leaving responsibility for their performance with the main contractor.
To name suppliers, the client first identifies a list of potential suppliers. They may invite these potential suppliers to submit tenders. The client then names a short-list of acceptable suppliers in the tender documents for the main construction contract. The tender documents allow for the named suppliers by including a provisional sum.
When tendering for the main contract, the main contractor makes allowances for mark up, attendance and programme in relation to the named suppliers. Once appointed, the successful contractor seeks tenders from the named suppliers (although they may reasonably object to any of them). If the client previously sought tenders form the named suppliers, they may pass these on to the main contractor, although it is the responsibility of the main contractor to negotiate an actual price.
Once the main contractor has selected and appointed a supplier, the provisional sum is replaced with the actual price agreed.
The main contractor pays the named supplier and the main contractor is responsible for their works. However, if the materials or goods supplied turn out not to be fit for purpose, then whoever named them will be responsible, not the contractor, unless the contractor was able to choose from a number of products available from the named supplier and they selected one that was unfit for purpose when others were available.
On public sector projects, a supply contract for which the client intends to provide a named list of possible suppliers may be subject to the requirements of the OJEU procurement rules.
[edit] Related articles on Designing Buildings
Featured articles and news
What they are, how they work and why they are popular in many countries.
Plastic, recycling and its symbol
Student competition winning, M.C.Esher inspired Möbius strip design symbolising continuity within a finite entity.
Do you take the lead in a circular construction economy?
Help us develop and expand this wiki as a resource for academia and industry alike.
Warm Homes Plan Workforce Taskforce
Risks of undermining UK’s energy transition due to lack of electrotechnical industry representation, says ECA.
Cost Optimal Domestic Electrification CODE
Modelling retrofits only on costs that directly impact the consumer: upfront cost of equipment, energy costs and maintenance costs.
The Warm Homes Plan details released
What's new and what is not, with industry reactions.
Could AI and VR cause an increase the value of heritage?
The Orange book: 2026 Amendment 4 to BS 7671:2018
ECA welcomes IET and BSI content sign off.
How neural technologies could transform the design future
Enhancing legacy parametric engines, offering novel ways to explore solutions and generate geometry.
Key AI related terms to be aware of
With explanations from the UK government and other bodies.
From QS to further education teacher
Applying real world skills with the next generation.
A guide on how children can use LEGO to mirror real engineering processes.
Data infrastructure for next-generation materials science
Research Data Express to automate data processing and create AI-ready datasets for materials research.
Wired for the Future with ECA; powering skills and progress
ECA South Wales Business Day 2025, a day to remember.
AI for the conservation professional
A level of sophistication previously reserved for science fiction.
Biomass harvested in cycles of less than ten years.
An interview with the new CIAT President
Usman Yaqub BSc (Hons) PCIAT MFPWS.
Cost benefit model report of building safety regime in Wales
Proposed policy option costs for design and construction stage of the new building safety regime in Wales.
Do you receive our free biweekly newsletter?
If not you can sign up to receive it in your mailbox here.

























