Not Renewing Lease in Illinois

[Marvin Anaya]

Hi BPers!

I have a property in unincorporated Cook County (Chicago address) and I wish to NOT-renew a lease with a tenant which is expiring April 30th.  1. For Illinois/Cook County, do I have to provide a reason why I won't renew. 2. How much notice must I give? 3. Do I have to follow Chicago RLTO since it's a Chicago address or Cook County/Illinois since it's unincorporated.

Thanks! 

Marvin