Glossary

Variation

A variation is a change to the scope of work set out in the contract, whether an addition, an omission or a change in how something is to be done, usually with an adjustment to the price and the programme.

CONSTRUCTION DEFECT GLOSSARY·UPDATED OCTOBER 2026
Where the word is used

Australian and British contract language. In the United States the same thing is a change order. Either way it has to be instructed or agreed in writing to be paid.

On site

Variations and defects get confused on the register when a change made on site produces something that looks wrong. A door swing changed at the client’s request that now catches on the carpet is not a defect, and counting it as one puts the cost on the wrong party.

On the record

How IssuesId holds it

IssuesId records a variation as a Type on the record, Variation or Contract Variation, with a cost category of variation, so it drops out of the defect counts and reads correctly in the cost reports. The trade can dispute a defect that is really a variation, and the ruling stays on the file.

Asked alongside

Two questions people ask

What is a variation in construction?
A change to the contracted scope of work: an addition, an omission, or a change in method or material, instructed or agreed under the contract, usually with a price and programme adjustment. In the United States it is a change order.
Is a variation a defect?
No. A defect is work that does not meet the contract; a variation is a change to what the contract requires. The confusion happens when a change made on site produces a result that looks wrong. It should be recorded as a variation so the cost sits with whoever asked for the change.
Related terms

Definitions describe common usage and the usual shape of standard-form contracts. Your contract and your jurisdiction’s building law set the terms that apply to your job. The whole list is at the glossary.

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