average cost of painting an apartment
1 Interior paint itself costs anywhere from $12-$50 or more a gallon, depending on the quality. 2  Painting a 12x12-foot room, both walls and ceiling, can require $25-$100 worth of paint, plus $10-$50 for primer, brushes, rollers, drop clothes and other supplies. Expect to pay $200-$400 to have a 12x12-foot room painted by a licensed contractor with brand-name paints; a 15x20-foot room or larger runs $300-$700 or more; and a 1,200-1,500 square foot home is $1,100-$2,000 or more.