Variations (or Change Orders) in construction projects are common and there is not likely that a project completes without any variation. However, variations are a nightmare for the owners, generally, although there are negative variations which lower the total cost of a project.

Variations are caused due to few reasons which are;

Lack of consistent contract documents

Change of regulations,

Additional requirements by the owner

Cancellation of items

Failure to address discrepancies in a timely manner

Late changes

Variations are governed by the relevant clauses in Conditions of Contract.