It is common practice for contractors, sub-contractors and work crews to put a lien on your property until they are paid for materials and labor. Often this will be called a "mechanic’s lien." When any payment is made for materials or services provided by individuals in connection with your remodeling project, be sure to get a written release of the lien. Allowing a lien to remain against your property could result in difficulty selling your home or obtaining financing.

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Have a written contract with whoever will do work at your home
Contract Checklist
Read all contracts carefully to identify and eliminate hidden costs