Using this type of method to determine drywall install and finish costs is pretty common in the new construction industry, but does have a place within large remodeling projects as well. Installing and finishing drywall will cost around 85¢ to $1.15 per sq.ft. for drywall prices, with an average of about $1 per sq.ft.You should expect to pay, however, about $30/sheet for a decent quality hanging and finishing job.ou can pay for anywhere from $25 a sheet ($12.50 to hang, and $12.50 to finish) on the cheaper side, on up the scale to as much as $60 a sheet to finish drywall for the pricier projects such as wide arches, vaulted ceilings, etc. Anything that involves high elevation will require extra cost for lift equipment rentals.