How much per square feet to install drop ceiling?

There are alot of variables to consider when bidding a job like this. Material costs can vary greatly, depending on the style of the tiles. A good labor price for me per square foot is $1.25 for 2X2 $.85 for 2X4 and $.75 for 4X4 tiles but you also have to consider joist height compared to drop height and how cut up it is for extra rooms $15 set up per additional room.