HB1427
ALGORITHMICS PROHIBITED-RENT
TL;DR
Illinois HB1427, introduced by Rep. Kevin Olickal, would ban residential landlords from using algorithmic pricing tools (like RealPage or Yardi) that rely on nonpublic competitor rent data to set or adjust tenant rents. Violations would be treated as unlawful practices under the Illinois Consumer Fraud and Deceptive Business Practices Act, opening the door to state enforcement and private lawsuits.
How This Might Impact Your Business
Residential landlords and property management companies in Illinois would be prohibited from using algorithmic rent-setting tools (such as RealPage, Yardi, or similar revenue management software) that incorporate nonpublic competitor data like actual rents, occupancy rates, or lease terms.
The ban covers both initial rent-setting and rent increases at lease renewal, so property managers cannot rely on these tools even for existing tenants under new leases signed after the effective date.
Aggregated, anonymized market reports published monthly or less frequently by trade associations remain permitted, giving landlords a legal alternative for market benchmarking.
Affordable housing pricing tools used to comply with government income/rent limits (LIHTC, Section 8, local affordable housing programs) are exempt.
Violations trigger liability under the Illinois Consumer Fraud and Deceptive Business Practices Act, which allows for civil penalties up to $50,000 per violation, Attorney General enforcement, and private lawsuits with attorney's fees.
PropTech vendors selling algorithmic pricing software to Illinois landlords would effectively lose their Illinois market unless they can demonstrate their models were not trained on nonpublic competitor data.
The bill only applies to leases executed on or after the effective date, giving landlords a transition window but no grandfathering for renewals.
What Should You Do
Inventory every rent-pricing tool your property management operation uses in Illinois and get written confirmation from vendors about whether their algorithms use nonpublic competitor data.
Ask your legal team to review vendor contracts for indemnification clauses covering Consumer Fraud Act exposure, and identify manual or aggregated-data-based pricing alternatives.
If you are a PropTech vendor, prepare a data provenance disclosure for Illinois customers documenting training data sources.
Track HB1427's progress out of the Rules Committee; similar bills have passed in other states (San Francisco, Philadelphia, Minneapolis) and federal antitrust action against RealPage is accelerating momentum.
Brief your revenue management and operations teams now on likely workflow changes so pricing decisions can be documented as landlord-made rather than algorithm-made.
Who It Affects
Sponsors
Status Timeline
introduced
Rule 19(a) / Re-referred to Rules Committee
January 16, 2025