variation order

noun
UK /ˌveəriˈeɪʃən ˈɔːdə/
US /ˌveriˈeɪʃən ˈɔːrdər/

A written instruction that changes something already agreed on, like a plan or a job.

The builder received a variation order to add a window to the new house.


OTHER MEANINGS

2. In building projects, an official document that adjusts the scope, cost, or schedule of work.

The variation order raised the project cost by five percent.

3. A formal request to alter the terms of an agreement between two parties.

Both sides signed the variation order before the deadline.

4. A written note that updates a previous instruction or design.

The engineer issued a variation order to fix the pipe layout.