Ing to Boundy (2012), typically, a written contract will include: Date of agreement. Names of parties to the agreement. Preliminary clauses. Defined terms. Main contract clauses. Schedules/appendices and signature provisions (para. 5).
Licensed contractors are required by law to provide a written contract for residential work, signed by both parties. Don't rely on verbal agreements. Get all guarantees, warranties, and promises in writing. Limit your down payment or deposit.