When hiring a contractor it is always best to hire one who is personally referred to you by someone you trust. Hiring through ads or phone book is hit and miss. Check with your local paints stores, they know the good guys from the bottom feeders. Go to the stores that sell the high quality paints like Benjamin Moore(nonpareil), Pittsburg, Sherwin Williams or Glidden. Don't go the the big box stores for referrals, the people there don't know squat!
Painting the exterior of your home is a very important aspect of owning your own home. Maintaining the exterior and interior paint protects your most prized investment from deterioration and also gives it that “wow factor” when friends and family see your paint job. Trust the Arizona Painting Company in Phoenix or Tucson to treat your home like it was our own.
Receive for your contractor’s license. Once you’ve passed your licensing exam, registered your business through the proper channels and shown proof of liability insurance, you can submit an official application to receive your contractor’s license. This can be done online or by mail. Following a short review process, you’ll be issued your license, after which you can get to work securing jobs and building your business’s reputation.
We had a bad experience with an interior painter years ago, with the crux of the problem being him overcharging us at the end for "extra work" he didn't anticipate. One thing I'd strongly recommend is making sure it's in the contract that any additional work or growth work is estimated and communicated to the owner as soon as it is identified, otherwise the owner is not liable to pay it at the end.
If you are going to hire a contractor (professional painter) give a room by room punch list of the fixing of holes small or big, have it identified for the painter to tell you if you need a drywall finisher or if he does this type of work good. Wall repairs can be 3-5 steps to do repairs ( one per day for good drying of patching material and a good sanding) this is what gives you a good paint job only using high quality paint.