Security Deposit for long term tenants 15+ years

[Sara Wnek]

Hi, 

I have a question regarding refunding the security deposit on long term tenants in Chicago. My husband and I have a property we just bought this year and next year in 2019 we are not re-newing one of the leases so that we can get into that unit and do some rehab. My question is do we have any grounds when their lease is up next year to take any of the security deposit for the 15 years worth of wear and tear? Wondering what others do since we technically never saw the initial condition of the unit 15 years ago.....

Thanks!