According to the EPA, professional painters must check for lead -- especially if a home was built before 1978. Many DIY painters forget to test for lead paint. Testing kits are available in home improvement stores for less than $40. You can also hire a lead testing and removal professional to do this work quickly and efficiently on your behalf. Lead paint can be dangerous; it's far better to find it before you put time and effort into painting your home than after the fact.
One of the most popular painting applications in the industry, ColorSnap suggests colors that will work in at your job site. Simply take a picture of the room, entryway or whatever else, and the software will find up to eight colors that will create a beautiful space. In addition, the program will suggest coordinating colors and help you locate the nearest Sherwin-Williams store.
I do not mean to come off with an edge, however, this is an article for people hiring low bid, uninsured, one man band painters out to "hustle" a buck. Hire reputable, established companies or hire someone you know or have a strong referral from. If you are arguing over watered down paint, ticky, tacky deposits, buying your own supplies, you have hired the wrong guy.
I put out a request for bids to several local house painters and quite a few seemed high. One was for over $6000 for painting the exterior of the house with putty fill as necessary, paint included. It was for him and one other guy to do the work. I said, "it's going to take you guys quite a while to get this job done" and he told me that no, they could do it in 2 days. I don't know about you but $1500 a day per painter seems more than just a bit high. I went with someone else and they had several people there for several days working like crazy and did a great job. There are too many scammers.
To win work, contractors generally have to bid against other suppliers. To make an accurate bid, they estimate the time and materials required to complete the job. They measure the area to be painted and discuss the type of finish the customer requires. They assess the quality of the surfaces to work out how much remedial work they must carry out before painting. They might have to remove old paint or wall coverings, or repair cracks and other damage. They also calculate the cost of any essential equipment, such as scaffolding for exterior walls.