Reasonable objection to a named specialist
In February 2013, a change was introduced to the JCT Standard Building Contract 2011 enabling an employer to identify specialists to be used as domestic sub-contractors (that is specialists subcontracted by the main contractor) for identified parts of the works by appropriate entry in the contract particulars. This provides the opportunity for the employer to select a sub-contractor with particular expertise, whilst leaving responsibility for their performance with the main contractor.
There are two ways in which the specialist provisions operate:
- Pre-named specialist: The specialist may be named in the contract together with the work to be carried out.
- Post-named specialist: A provisional sum may be inserted in the bill of quantities, allowing the contract administrator to issue an instruction to name the specialist and identify the works required.
Upon receiving an instruction from the contract administrator in relation to a post-named specialist or a replacement specialist, the contractor is able to raise reasonable objection within seven days. The contract administrator then has a further seven days to either:
- Name an alternative specialist.
- Instruct the contractor to undertake the work itself or through its own sub-contractor.
- Omit the work altogether.
The grounds for reasonable objection by the contractor could include:
- The specialist has a poor safety record.
- If there are reasonable grounds for believing that the specialist may not be financially secure, solvent, reliable or technically competent.
- If the tender sum is not believed to be financially viable.
- Where the programme is deemed to be unreasonable.
Similar provisions are permitted where the contractor is unable to enter into a contract with the named specialist, or where the contractor terminates the specialist’s employment.
If the contractor proposes their own specialist, the employer has seven days from the point at which the contractor notifies them of the proposed replacement to raise any reasonable objection themselves.
The employer may object to the proposed specialist on the grounds that there will be a sub-standard performance. However, since the contractor remains responsible for the performance under the contract, it is rare that such an objection would be deemed valid. Where the employer has a realistic concern that liquidated damages for any delay that arises due to sub-standard performance is an inadequate remedy, the objection may be judged to be reasonable. Likewise if the employer has concerns about the contractor having the resources to fulfil their obligations in the event of things going wrong.
In the event of an objection raised by the employer being deemed reasonable, the contractor must propose a further replacement for consideration.
Adjudication can be used if necessary to determine what constitutes a reasonable objection.
[edit] Find out more
[edit] Related articles on Designing Buildings Wiki
- Construction contracts.
- Contract conditions.
- Extension of time.
- Joint Contracts Tribunal.
- Named specialist work.
- Named subcontractor.
- Nominated subcontractor.
- Subcontractor.
- Supplier.
External references
- ‘The JCT Major Project Form’, JONES, N. F., Blackwell Publishing, (2004)
Featured articles and news
Preparing safety case reports for HRBs under the BSA
A new practical guide to preparing structural inputs for safety cases and safety case reports published by IStructE.
Male construction workers and prostate cancer
CIOB and Prostate Cancer UK encourage awareness of prostate cancer risks, and what to do about it.
The changed R&D tax landscape for Architects
Specialist gives a recap on tax changes for Research and Development, via the ACA newsletter.
Structured product data as a competitive advantage
NBS explain why accessible product data that works across digital systems is key.
Welsh retrofit workforce assessment
Welsh Government report confirms Wales faces major electrical skills shortage, warns ECA.
A now architectural practice looks back at its concept project for a sustainable oceanic settlement 25 years on.
Copyright and Artificial Intelligence
Government report and back track on copyright opt out for AI training but no clear preferred alternative as yet.
Embedding AI tools into architectural education
Beyond the render: LMU share how student led research is shaping the future of visualisation workflows.
Why document control still fails UK construction projects
A Chartered Quantity Surveyor explains what needs to change and how.
Inspiration for a new 2026 wave of Irish construction professionals.
New planning reforms and Warm Homes Bill
Take centre stage at UK Construction Week London.
A brief run down of changes intentions from April in an onwards.
Reslating an ancient water mill
A rare opportunity to record, study and repair early vernacular roofs.
CIOB Apprentice of the Year 2025/26
Construction apprentice from Lincoln Mia Owen wins this years title.
Insulation solutions with less waste for a circular economy
Rob Firman, Technical and Specification Manager, Polyfoam XPS explains.
Recycled waste plastic in construction
Hierarchy, prevention to disposal, plastic types and approaches.
UK Net Zero Carbon Buildings Standard V1 published
Free-to-access technical standard to enable robust proof of a decarbonising built environment.






















