Independent Client Representation on JCT Design-and-Build Contracts
An Employer's Agent (EA) is the client's independent representative on a design-and-build (D&B) construction contract, responsible for protecting the employer's commercial and contractual interests throughout procurement, construction, and handover. Under traditional procurement, the client appoints an architect and a contract administrator to manage the works. Under design-and-build, the contractor takes responsibility for both design and construction — but the client still needs an independent professional to certify payments, review the contractor's design proposals, assess variations, and ensure the finished building meets the Employer's Requirements. Benchmark Lead Consultants provides Employer's Agent services on JCT Design and Build Contract 2016 for local authorities, housing associations, private developers, and education providers across the UK.
That independent professional is the Employer's Agent. The EA role is defined within the JCT Design and Build Contract 2016 (DB 2016) — and its predecessor the JCT Design and Build Contract 2011 — where the Employer's Agent acts on behalf of the employer in administering the contract. The EA issues instructions, certifies interim and final payments, assesses variations, determines extensions of time, and certifies practical completion. Under DB 2016, the Employer's Agent is named in the Contract Particulars and their authority derives directly from the contract conditions — making this a formal contractual appointment, not an informal advisory role.
Under a traditional JCT contract — such as the JCT Standard Building Contract 2016 (SBC 2016) — the Contract Administrator (CA) has a dual duty: they must act fairly and impartially between the employer and the contractor when making certifications and determinations. Under the JCT Design and Build Contract 2016, the Employer's Agent has no such dual duty. The EA acts solely in the employer's interest. This is the critical distinction that every client on a design-and-build contract needs to understand: the Employer's Agent is your advocate, not a neutral arbiter.
“The most common misconception I encounter is clients assuming their Employer's Agent must be fair to the contractor. They don't. On a JCT Design and Build contract, the EA's sole obligation is to protect the employer's interests — and that distinction is exactly where an effective EA earns their fee.”— Mark Evans MBA CRE, FCMI, Director, Benchmark Lead Consultants
This means the Employer's Agent can and should challenge the contractor's proposals where they do not meet the Employer's Requirements, push back on inflated interim valuations, scrutinise claims for extensions of time, and ensure that the contractor delivers exactly what they promised at tender. At Benchmark Lead Consultants, we view the EA role as the employer's first line of defence against contractor overreach — protecting both the quality of the finished building and the commercial terms of the contract.
Benchmark Lead Consultants provides a comprehensive Employer's Agent service covering every stage of the JCT Design and Build Contract 2016 lifecycle — from drafting the Employer's Requirements through construction phase administration to final account settlement. Our approach is built on eight core stages of delivery.
The quality of the Employer's Requirements (ERs) determines the quality of the contractor's proposals and, ultimately, the quality of the finished building. Benchmark Lead Consultants works with you to develop clear, comprehensive ERs that define your expectations for design quality, material specification, programme, performance standards, and compliance obligations. Ambiguity in the Employer's Requirements is the single biggest source of disputes on JCT Design and Build contracts — and we ensure your requirements leave no room for misinterpretation, reducing the risk of costly variations and claims during construction.
When the contractor submits their proposals, Benchmark Lead Consultants conducts a detailed technical and commercial review against the Employer's Requirements. We verify that the proposals comply with the ERs, that the design is fit for purpose, that the specification meets the required standards, and that any deviations, qualifications, or exclusions are identified and addressed before the contract is executed. This review is one of the most critical steps in the Employer's Agent process — under the JCT Design and Build Contract 2016, the Contractor's Proposals form part of the contract documents, and once the contract is signed, they become the benchmark against which everything is measured. Gaps or ambiguities missed at this stage become disputes during construction.
Throughout the construction phase, the contractor submits detailed design packages for review and approval. Benchmark Lead Consultants reviews each submission against the Employer's Requirements and the Contractor's Proposals, checking for compliance, design coordination across disciplines, specification quality, and buildability. We do not rubber-stamp submissions — we interrogate them technically and commercially. Where submissions fall short of the Employer's Requirements, we issue detailed comments with specific references to the non-compliant elements and require resubmission before approval is granted.
Benchmark Lead Consultants assesses the contractor's monthly applications for interim payment under the payment provisions of the JCT Design and Build Contract 2016, verifying that the work claimed has been carried out, that it meets the required quality standards, and that the valuation is accurate. We issue interim certificates in accordance with the contract conditions, ensuring that the employer pays only for work properly completed and materials properly stored. We also manage the retention mechanism — typically 3% reducing to 1.5% at practical completion — and the release of retention at the end of the defects liability period as defined in the Contract Particulars.
Variations are inevitable on construction projects, and their management is one of the most commercially significant aspects of the Employer's Agent role. When a variation arises — whether initiated by the employer, resulting from site conditions, or arising from a discrepancy between the Employer's Requirements and the Contractor's Proposals — Benchmark Lead Consultants assesses the cost and time implications, negotiates with the contractor, and issues the appropriate contract instruction under the JCT Design and Build Contract 2016 variation provisions. We ensure that every variation is properly valued against the contract rates, that the contractor does not inflate costs or claim consequential time extensions without justification, and that the employer understands the full financial and programme impact before committing.
Benchmark Lead Consultants carries out regular site inspections to monitor construction progress, workmanship quality, and compliance with the Employer's Requirements and Contractor's Proposals. Every inspection is documented with dated photographs and a written report, providing a contemporaneous record of the works at each stage — evidence that is essential in the event of any dispute or claim. We identify defects and non-compliances early, issuing contract instructions to the contractor to rectify issues before they become embedded in the finished building.
Benchmark Lead Consultants determines when practical completion has been achieved under the JCT Design and Build Contract 2016, conducting a thorough inspection of the works and compiling a comprehensive snagging list of outstanding items. We issue the Practical Completion Statement only when we are satisfied that the building is fit for its intended purpose, that the works are substantially complete, and that the contractual obligations — including building control sign-off, commissioning certificates, and handover documentation — have been met. We manage the full handover process, ensuring the employer receives all required documentation including Operation and Maintenance (O&M) manuals, warranties, as-built drawings, and test certificates.
During the rectification period — typically 12 months from practical completion as defined in the Contract Particulars — Benchmark Lead Consultants manages the identification and rectification of any defects that emerge. We issue notifications to the contractor specifying each defect and the required remedy, and we monitor rectification to ensure it meets the original specification. At the end of the rectification period, we issue the notice of completion of making good and agree the final account with the contractor. The final account is the definitive financial settlement of the JCT Design and Build Contract 2016, and Benchmark Lead Consultants ensures that every variation, claim, contra-charge, and adjustment is properly accounted for — protecting the employer's position to the last pound.
On a JCT Design and Build Contract 2016, the contractor controls both the design and the construction. Without an Employer's Agent, the employer has limited visibility of what is being designed, limited control over workmanship quality, and limited ability to challenge the contractor's valuations and claims. The Employer's Agent provides the technical expertise and contractual authority to ensure the employer's commercial and quality interests are protected at every stage — from the moment the Employer's Requirements are issued to the final account settlement.
Common problems on design-and-build projects without an Employer's Agent include:
Benchmark Lead Consultants provides Employer's Agent services on JCT Design and Build Contract 2016 across a wide range of UK construction project types:
If you are entering into a JCT Design and Build Contract 2016, the contract itself provides for the appointment of an Employer's Agent to administer its provisions. While it is technically possible for the employer to self-administer the contract, this is rarely advisable — the contract administration requires specialist knowledge of the JCT conditions, valuation procedures, and construction processes. Without an EA, the employer is exposed to contractor overreach, overpayment risk, and potential disputes at final account. Benchmark Lead Consultants recommends appointing an EA on every design-and-build project regardless of scale.
The Employer's Agent is a contractual role defined within the JCT Design and Build Contract 2016 — the EA administers the contract, certifies payments, assesses variations, and protects the employer's contractual position. The Project Manager is a broader role that manages the overall delivery of the project — programme, budget, stakeholder coordination, and risk. On many projects, Benchmark Lead Consultants fulfils both roles, providing integrated contract administration and project management under a single appointment. On others, the EA and PM roles are held by different parties. The key distinction is that the EA's authority comes from the contract; the PM's authority comes from the client's appointment.
There is no legal prohibition, but Benchmark Lead Consultants advises against it. The Employer's Agent must review and approve the contractor's design submissions against the Employer's Requirements. If the EA is also the designer who prepared the ERs, there is an inherent conflict of interest — they are effectively reviewing their own work. An independent EA provides objective scrutiny of both the contractor's proposals and the design submissions, without the risk of self-certification.
Employer's Agent fees depend on the project value, complexity, duration, and scope of service. For a straightforward single-phase D&B contract, fees are typically a percentage of the contract value or a fixed lump sum. For complex multi-phase programmes or projects with significant variation risk, the scope of work increases and fees reflect this. Benchmark Lead Consultants provides fixed-fee proposals based on a clear scope of service, so you know exactly what you are paying for before appointment. Contact us for a project-specific fee indication.
Under the JCT Design and Build Contract 2016, the Employer's Agent acts on behalf of the employer — meaning the employer has the right to instruct the EA on how to act. If you disagree with a certification or determination, Benchmark Lead Consultants will discuss the position with you, review the contractual basis, and if appropriate, issue a revised certificate or instruction. However, certifications must be made in accordance with the contract conditions, and an EA cannot issue certificates that are contractually unsupportable. Our approach is to keep you informed before any certification is issued, so disagreements are resolved before they become problems.
After practical completion, the rectification period begins — typically 12 months as defined in the Contract Particulars. During this period, Benchmark Lead Consultants identifies and notifies defects to the contractor, monitors their rectification, and ensures repairs meet the original specification. At the end of the rectification period, we issue the notice of completion of making good and agree the final account. Defects that emerge after the rectification period may still be recoverable under the contractor's design liability or through collateral warranties and third-party rights, depending on the contract structure.
Under the JCT Design and Build Contract 2016, the Employer's Agent acts on the employer's behalf and their authority derives from the contract and the employer's instructions. At Benchmark Lead Consultants, we do not approve design changes, variations, or any instruction with cost or programme implications without the employer's prior written consent. Our standard practice is to present every proposed change with a clear assessment of cost, time, and quality impact so the employer can make an informed decision.