12/03/2026
One Contract, Many Orders: Why House building Procurement Can Turn Adjudication Into a Nightmare
Ever tried chasing retention or additional payments from a house builder, only to feel like you’re running an obstacle course blindfolded? The hurdles aren’t always on site, they often start on paper.
Many large house builders issue separate subcontract orders for additional works, rather than using a single subcontract with clear variation instructions. At first glance, it seems simple. In practice, it can create a series of individual contracts, each with its own payment terms, retention rules, and dispute obligations.
Adjudication is designed to be fast and decisive. But its effectiveness assumes a single construction contract. When multiple subcontract orders exist:
1. Each order can constitute a separate contract
2. Retention may be held per order, not for the project as a whole
3. Contractors may attempt cross-contract set-offs
4. Multiple adjudications may be required instead of one
For subcontractors, what should be a straightforward payment recovery can become complicated, time-consuming, and expensive.
Retention recovery is particularly tricky. With multiple orders:
5. Practical completion may be disputed per order
6. Retention release schedules may vary across contracts
7. Contractors may claim deductions under one order to offset another
Without careful review, subcontractors can be caught in a procedural maze, even when work has been properly executed. Therefore Subcontractors should ask themselves before agreeing to additional works:
8. Is this a variation under an existing subcontract, or a new order?
9. How is retention applied? Individually or collectively?
10. Could this structure complicate adjudication or set-off claims?
Understanding these points early can save time, money, and headaches.
Procurement strategies that fragment work into multiple orders may seem harmless, but they create hidden risks for subcontractors. Recognising multiple contracts early is key to protecting your rights particularly around retention and payment recovery.
At Fyfe Construction Management, we help subcontractors navigate these complexities, ensuring your contractual rights are clear and enforceable.