IL SB3530

Caps security deposits at no more than one month's rent for a tenant's primary residence, with landlords only permitted to collect the deposit upon signing the initial lease agreement.

Prohibits landlords from charging additional security deposits or increasing existing deposit amounts upon lease renewal or rent increases.

Limits rent increases to a maximum of 3.5% within any 12-month period for primary residences.

Requires landlords to provide tenants with at least 30 days' written notice before implementing any rent increase; tenants are not liable for the increase if proper notice is not given.

Allows tenants to bring civil action for violations, with courts authorized to award injunctive relief, monetary damages, attorney's fees, and costs.