We are considering hiring a contractor to demo, install kitchen cabinets, do electrical work (possible additional 220 line for separate cooktop), and plumbing for a small kitchen remodel. He subcontracts the elect. and plumbing, and states all are licensed. We are buying the cabinets and countertop/sink, appliances ourselves. He works on a T and M basis, time and materials. Time cost is $115 an hour for 3 men working. He estimates the job at about $6000-7000 total, but his contract provides for no max for the job. His references are good. Small kitchen about 13 feet by 7 feet, galley style. Floors and painting we are doing ourselves also.
What should one consider with signing a T and M contract?