Some contractors work on time and material others on a firm contract. I would never hire the former and am leary of the latter. A contractor may low-ball a bid to get the job planning to make a killing on change orders. If you say good morning to them, they charge you extra for that. If the contract is not very, very specific and extensively fleshed out or if they display their change order schedule prominently on top, show them the door.
We've heard countless stories of people who have been let down by other house painting services. No one wants to take valuable time off of work to wait for painters who never show up. At Handy, we pride ourselves on connecting our customers with reliable and trustworthy residential house painters. They will arrive on time, fully ready to do your job.