What Do We Mean by ‘Valuation’ in Construction?
Under JCT contracts, contractors are typically paid through interim payments, rather than waiting until the very end of the project. These payments are usually assessed monthly or at agreed stages.
In simple terms, the process looks like this:
• The contractor carries out work on site.
• A valuation is prepared showing the value of work completed to date.
• The contract administrator or employer’s agent assesses that work.
• An interim certificate is issued.
• The client pays the certified amount, less retention or adjustments.
The challenges lies not in the concept, but in the detail – how that value is calculated and when payments become due. Broadly speaking, there are two common valuation approaches under JCT contracts:
1. Stage payments.
2. Monthly (periodic) valuations.
Although both aim to achieve the same outcome, paying the contractor fairly for work completed, they operate quite differently and carry unique risks for each party.
Stage Payments: Simple, Predictable, but Not Always Accurate:
Stage payments (often referred to as Alternative A) are commonly used to design and build projects or smaller schemes where works can be clearly broken into defined phases – for example:
• Foundations.
• Superstructure.
• Watertight shell.
• Fit-out.
Each stage is assigned a value, often as a proportion of the overall contract sum. Once a stage is deemed complete, payment becomes due.
The Client Perspective:
For clients, stage payments offer predictability. You know what you will be paying and when, which is helpful for budgeting and cash flow planning. Each payment is also tied to a visible milestone, making progress easier to understand and monitor. However, stage payments can be inflexible. The values assigned to stages are rarely a true reflection of actual costs incurred at that point in time. Early stages may be underfunded, while later stages might be overvalued, or vice versa.
The Contractor Perspective:
Contractors benefit from knowing when payments are expected, but issues can arise if a stage is poorly defined. For example, what exactly qualifies as ‘superstructure complete’? If elements remain outstanding, disputes can arise over whether payment is due.
There is also a cash flow risk. If a stage isn’t achieved by the valuation date due to delays, perhaps outside the contractor’s control, payment may be pushed into the next valuation period, creating unnecessary financial pressure. For this reason, clear and detailed stage definitions at contract stage are essential. The more precise the wording, the less room there is for disagreement later on.
Monthly Valuations: Fairer, but More Involved:
The alternative, and most common, approach on larger JCT projects is the monthly valuation. Under this method, the contractor submits a valuation each month setting out the value of work completed to date. This valuation is typically based on a cost plan or breakdown that is assessed and updated as the project progresses. The contract administrator or employer’s agent then reviews the application, checking:
• What work has actually been completed.
• Whether it meets the contractual standard.
• What materials are on or off site.
• Whether variations have been properly accounted for.
Once agreed, an interim certificate is issued for payment.
Why Clients Often Prefer Monthly Valuations:
From a client’s perspective, monthly valuations are generally more accurate. You’re paying for genuine progress rather than arbitrary milestones, and you receive a regular snapshot of how the project is performing financially and physically.
That said, this approach requires a greater degree of professional judgement. Valuing work isn’t always straightforward, and consistency is key. The contract administrator must remain impartial and certify only what is legitimately due – even when there’s pressure on site to maintain cash flow.
What Actually Counts as ‘Completed Work’?
One of the most common causes of disputes is misunderstanding what qualifies as completed work.
Under JCT contract, completed work does not mean perfect work. It means work that has been properly executed in accordance with the right contract. This can include:
• Work completed to the required standard.
• Materials properly fixed in place.
• Certain off-stie materials, provided ownership has passed to the client and appropriate vesting certificates are in place.
However, defective work should not be valued, even if it appears complete. Temporary works, preliminaries, and variations can be included, but they must be valued strictly in line with the contract rules and supported by evidence. For clients, consistent application of valuation principles, backup up robust site records, is essential to maintaining fairness and transparency.
For contractors, good documentation is everything. Clear applications supported by progress photos, quantity, take-offs, and up-to-date cost breakdowns can significantly reduce the risk of delayed or challenged payments.
Pros and Cons: A Balanced View:
For Clients:
Pros:
• You only pay for verified progress.
• Better control over cash flow.
• Reduced risk of overpayment.
Cons:
• Valuations can be subjective.
• Heavy reliance on the contract administrator’s judgement.
• Payment lag may impact site morale or progress.
For Contractors:
Pros:
• Predictable income stream.
• Recognition for ongoing work.
• Reduced reliance on final payment.
Cons:
• Payment delays if valuations are disputed.
• Administrative burden of monthly applications.
• Cash flow pressure from retention or assessment errors.
Ultimately, the valuation process should strike a fair balance, rewarding genuine progress while protecting the client’s investment.
Getting Valuations Right: Best Practice:
Smooth valuations are rarely accidental. A few core principles make significant difference:
1. Clarity at contract stage – define how valuations work, when they’re assessed, and what evidence is required.
2. Consistency – apply the same approach every month.
3. Transparency – ensure both parties understand how valuations are calculated.
4. Communication – address disagreements early, before payment deadlines pass.
For clients, appointing a diligent and impartial contract administrator is critical. For contractors, timely, well-supported applications help avoid unnecessary delays.
Final Thoughts:
Valuations sit at the heart of every construction project. When handled correctly, they become a reliable management tool rather than a source of tension. At their core, valuations are about fairness and transparency, ensuring that contractors are paid for what has genuinely been achieved, without exposing clients to unnecessary risk.
Valuations sit at the heart of every successful construction project, yet getting them right requires experience, impartiality and a thorough understanding of JCT contracts. Whether you are a client looking to protect your investment or a contractor managing cash flow, having the right commercial support in your corner makes all the difference. If you have any questions, or would like to know more about how Harrison Clarke can help, get in touch with the team today. You can reach the Southampton office on 023 8155 0051, the London office on 020 8153 1233, or simply get in touch here and we would be happy to help.
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