What is Variation in construction?

A variation in a construction contract is a change from what is currently contracted to be built, supplied or fitted to a different build, supply or fit.

Variations are written instructions from the client to a contractor or from a main contractor to a sub contractor. The instruction will set out the details of the change so that all parties are agreed on the new construction details.

Typically, a variation is used to clarify a detail that could not be fully defined at the start of the contract - Paints, wall coverings, carpets are examples of such details that are often left to the end of the contract to decide. They can be used when unexpected issues arise during the contract. They are often used simply because the client changes his mind during a contract.

The final contract is often modified by hundreds or even thousands of variations that each reflect a change in the way the building contract is to run.