Your remodeling contract should establish a series of payments to be made when certain aspects of the job are completed. For example, your contract could stipulate that you’ll pay in three equal installments, with the last payment to be made after the project is complete, and after you and your contractor agree the work is satisfactory.

Never put down more than 10% upfront; any more than that is too much cash to hand over before any work is complete. Your contractor should be able to get any necessary supplies on credit.

Avoid Allowances
Establish Good Communication
Keep a Project Journal
Track All Changes in Writing
Check the Work
Be a Good Customer