Normally, materials account for 15 percent of the price charged by painters. Several factors affect the price tag: dimensions, place, paint selection, and siding materials. General contractors normally charge a markup of 10 to 25 percent on the full price of a job. With new building jobs, unless you’re acting as your general contractor, painting prices will be slightly higher because of hiring and administration costs to the project supervisor or builder. Does the builder have trained contractors that follow the company’s guidelines? Our painters did need to paper and tape the glass spray walls. Not needing to paper and tape the floor onto this paint job before spray painting the timber produced the occupation economically and productive.