The cost to install crown molding will be anywhere between $645 and $1,561, with prices quoted between $8 and $3 per linear foot for the project. If you choose to install crown molding yourself, you may pay only between $40 and $260 per linear foot, depending on the type of wood you choose. Exact room measurements, material choices and the decision whether to hire a professional or do the job yourself can greatly impact the cost of your crown molding project.