Make sure you know about mechanic’s liens. In disputes between homeowners and contractor, the legal process favors the contractor. Be VERY careful about subcontractors and material suppliers. Be sure to pay for subs and materials DIRECTLY – don’t trust general contractor to pay them! Make sure this is clear in the contract. I’ve known a few people that have been burned by contractors not paying their subs and suppliers. You could end up paying for the job twice (it happens!)
There are also release forms on the website that you should use as the job progresses and when it is complete. Make all subcontractors sign them also.