State rules

Rent increases in Illinois

The Rent Control Preemption Act bars local caps statewide. 30 days' notice for a change in a month-to-month tenancy — but Chicago's RLTO sets longer, tenure-based tiers; see the Chicago file.

Check an increase in Illinois

The rules, in one table

Amount cap	No cap on the amount.
Notice for an increase	30 days' written notice for a change in a month-to-month tenancy.
Frequency	No statewide frequency limit beyond the notice and lease rules.
Retaliation window	Retaliation is barred, as everywhere; the presumption window varies — document your dates.
Local rent caps	Barred by state preemption.
Sources	735 ILCS 5/9-207

Manufactured-home lots

The Illinois Manufactured Housing Association and the Mobile Home Landlord and Tenant Rights Act govern parks; no lot-rent cap.

Rules checked October 2026

Sources: 735 ILCS 5/9-207. Information, not legal advice.