I know in my case, when renting an apt. with not so good credit the apartments usually ask for a larger down payment! My husband and I rented a place and his credit was spotless, in the high 800, but mine was bad and they still wanted an extra $2,000 deposit because of me. We tried to take me off and just list me as a tenant, but they said since we were married and going to be living there together they had to use both of or credit ratings. Needless to say my husband wasn't happy and I felt bad for being the cause of the increase!