Charge Housing Voucher/Section 8 Tenants More

[Victor Olowu]

Am I allowed to charge more for an apartment if the tenant is a voucher user versus regular tenants?  There is more work involved and a number of additional things you have to do to maintain a voucher tenant including additional inspections.  Can I charge more rent for this extra work, or would that be considered some kind of discrimination?  This is in the Chicago market, if it makes a difference.