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Delayed Construction Payments: Guidance For Contractors and Subcontractors

20 May 2026
Insight
Firm News

Cash flow is one of the central commercial realities of construction. A contractor or subcontractor may have completed the work, submitted the application and followed the agreed process, but still face delayed payment, disputed deductions or silence from the paying party.

Construction projects often involve multiple parties, tight programmes, changing scopes of work and pressure on margins. When payment is delayed, the impact is rarely limited to one invoice. It can affect wages, suppliers, plant hire, materials and the ability to continue performing under the contract.

For contractors and subcontractors, payment disputes should be managed early, carefully and with proper attention to the contract.

Payment is part of project control

Construction payment disputes often arise because payment administration is treated as a back-office process. In reality, payment is part of project control.

Most construction contracts contain a structured payment process. This usually includes payment applications, due dates, payment notices, pay less notices and final dates for payment. If those steps are missed or misunderstood, the legal and commercial consequences can be significant.

Under the Housing Grants, Construction and Regeneration Act 1996, construction contracts are subject to statutory payment and adjudication requirements. The Act also provides a right to suspend performance for non-payment, provided the statutory requirements are met. The unpaid party must usually give at least seven days’ notice before exercising that right.

That does not mean every unpaid invoice should immediately become a formal dispute. It does mean that contractors and subcontractors should understand the payment mechanism before a problem arises.

Where payment disputes commonly arise

Payment disputes are often framed as disagreements about money, but the underlying issue is usually more specific. Common causes include:

  • Disagreement over whether the payment application was valid
  • Failure to issue a payment notice or pay less notice on time
  • Deductions for alleged defects, delay or incomplete work
  • Disputes over variations or additional work
  • Disagreement over the valuation of work completed
  • Withholding of retention
  • Non-payment of certified sums
  • Insolvency risk within the employer, contractor or subcontractor chain.

These issues can become urgent quickly. A subcontractor may be carrying the cost of labour and materials while waiting for payment from a main contractor. A contractor may be under pressure from an employer while also facing demands from its own supply chain.

The challenge is that construction contracts are deadline driven. A party that misses a notice date, serves an unclear notice or waits too long to challenge a position may find that its options have narrowed.

Pay less notices and timing

Pay less notices are often central to construction payment disputes. Where a paying party intends to pay less than the sum claimed or notified, the notice must be served properly and within the required timeframe.

The timing and content of the notice matter. A late, unclear or defective notice may not have the effect the paying party intended. Equally, a contractor or subcontractor relying on an application for payment should ensure that the application is valid, properly submitted and supported by the contract.

The practical lesson is that construction payment disputes are not always decided by broad fairness. They can turn on process, timing and evidence.

Acting before the dispute escalates

Adjudication is often used in construction disputes because it is designed to provide a quicker decision while the project or commercial relationship continues. It can be particularly useful where cash flow is under pressure, and a party needs a binding decision without waiting for lengthy court proceedings.

Adjudication is not the only option. In some cases, targeted correspondence, negotiation, mediation, statutory demands or court proceedings may be more appropriate. The correct route will depend on the contract, the amount in dispute, the evidence, the solvency position of the other party and the urgency of recovery.

Where a debt is due and there is no genuine dispute, a statutory demand may also be considered as part of the recovery strategy. It is a serious step and should not be used casually. However, where a party is refusing to pay sums that are properly due, formal recovery action can shift the commercial position.

This is particularly important for subcontractors. Delayed payment can place severe pressure on smaller businesses that have already funded labour, materials and overheads.

Practical steps for contractors and subcontractors

Contractors and subcontractors can reduce payment risk by treating payment administration as a disciplined part of project delivery.

Businesses should consider the following steps:

  • Check the payment timetable at the start of the project
  • Diarise the due dates, notice dates and final dates for payment
  • Ensure payment applications comply with the contract
  • Keep clear records of work completed and materials supplied
  • Document variations before or as soon as possible after the work is done
  • Respond promptly to disputed deductions
  • Seek advice before suspending work or issuing a statutory demand.

These steps do not guarantee payment, but they place the business in a stronger position if a dispute arises.

Final thoughts

For businesses operating in the Cambridge construction market, payment discipline should be treated as a commercial priority. The contract should be understood before the dispute begins, notices should be managed carefully, and unpaid sums should be addressed before they place the business under avoidable pressure.

How To Get In Contact

For further insight into construction dispute resolution methods, please contact our construction disputes team at info@culbertellis.com or call 0204 600 9907.

Accurate at the time of writing. This information is provided for general information purposes only and should not be relied upon as legal advice.

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