Ahhhh, the art of compensation! Personally, I would not take a commission on new leases for exactly that reason: if you are 100% occupied, how do you make anything extra? My contract would specify a Bonus structure based on occupancy, collections, and delinquency (for example, a 10% Bonus, or more, would get you $4000 annually if your salary is $40K.) I would take a "commission" on all the renewals!