Your team may encounter unforeseen structural issues, or you may decide to include additional work as the project evolves. Any good contractor can handle these changes — just make sure that he bids them in writing first.

Specify in your remodeling contract that you want change orders in writing for anything that’s going to add to the bottom line of the job. That means the contractor must give you a description of the change and a fixed price for what it’ll cost. You both must sign the change order before the work is done.

Avoid Allowances
Establish Good Communication
Keep a Project Journal
Check the Work
Pay Only for Completed Work
Be a Good Customer