The average cost to hire someone to paint a medium-sized house ranges from $3,000 to $4,500, according to Home Advisor. Certain factors, such as the geographic location of the home and the type of siding on the home, can make the cost higher or lower.
The average exterior paint job requires 15 gallons of paint. Depending on the type of paint selected, the cost of paint can range from $375 to over $1,000. There are also other materials, such as brushes, a pressure washer, scaffolding, ladders and drop cloths, that further increase the materials cost associated with painting a house. In addition to materials, a homeowner must pay for labor if he hires someone to do the work.