The contract or receipt must be dated, show the name and address of the seller, and explain your right to cancel. If changes in the plans or the contract occur during the project, put them in writing as amendments to the contract, including any differences in cost. These change orders should be signed by both you and the contractor. Change orders are a major source of misunderstandings and cost overruns. Make changes in writing.
People change their minds during a building project.
If changes are made at the right time, the cost and length of the job may not be affected. Delay, however, can mean costly changes. For remodeling and new homes projects, allow at least 10 percent increase for changes from the contract. Talk to your contractor during the project. If in doubt, talk it out.