What is a variation claim in construction?
A variation claim is a written request for extra payment, extra time, or both, because the work changed from what the contract first required. It works only if you can show what changed, who ordered or caused it, and what it cost.
What counts as a variation
A variation is any change to the work in the contract. The change can add work, remove work, or alter how or when the work is done.
- A drawing issued after the contract was signed.
- An instruction from the superintendent or the client.
- Ground conditions that differ from the tender information.
- A change of material, finish or sequence.
- Extra testing, approvals or rework the contract did not allow for.
Many contracts also treat a verbal instruction as a variation. Many then add a rule that the instruction must be confirmed in writing. Read your contract for that rule before you rely on a phone call.
What a variation claim must show
- The event: what changed, and the date it changed.
- The cause: who instructed it, or which document changed.
- The entitlement: the contract clause that lets you claim.
- The cost: labour, plant, materials, subcontractors, overheads and margin.
- The time effect: any delay to the critical path.
A claim with a clear event and a clear number is paid faster than a long story with no figure.
Why variation claims fail
Most fail on process, not on merit. The notice was late. The instruction was verbal. The cost records were thin. The other side says the work was already in scope.
The fix is a daily habit: record each change on the day it happens, with the date, the source and a first cost estimate.
Related answers
Questions
Can I claim a variation without a written instruction?
Sometimes. It depends on the contract and the evidence. A written record made at the time helps a great deal, so confirm every verbal instruction by email the same day.
What is the difference between a variation and a claim?
A variation is the change. A claim is your request for payment or time because of that change.
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