Small Co-op, if we wanted to charge a fee for renting apartments

Hi,
It is a really small, self- managed co-op. We are trying to make everything equal. Usually, one apartment is the super for the month. Some apartments have tenants, instead of being owner occupied. I know a lot of co-ops charge to keep the units owner occupied. We are trying to find an equitable way of doing this. How much do co-ops usually charge for not living there?
Thanks,

By brooklynjennie | 01/23/2008 5:14 PM