How much does diy basement finishing cost?

DIY basement finishing costs about 30 percent of an estimate you might receive from a contractor — or about $6 to $10 per square foot, as of 2007. Along with saving labor costs by doing it yourself, use cheaper materials and leave portions unfinished to cut costs.

Source:

ACC Basements-The Cost

ServiceMagic-Where Does Your Money Go for a Basement Remodel?