Chicago, Illinois Real Estate Law: what state law controls, what turns local, and where property timeline starts to matter

Chicago real estate runs from Loop office towers being converted to apartments to century-old two-flats in Pilsen and brick bungalows across the Bungalow Belt, and its disputes run through the CIRCUIT COURT OF COOK COUNTY, one of the largest unified court systems in the world. Mortgage foreclosures are filed in the CHANCERY DIVISION at the RICHARD J. DALEY CENTER, 50 W. Washington Street; the city's eviction court — the busiest in the nation — also sits at the Daley Center; and property-tax challenges follow their own administrative track through the COOK COUNTY ASSESSOR and the BOARD OF REVIEW before they ever reach a judge. Land records are maintained by the Cook County Clerk, which absorbed the former Recorder of Deeds. The distinctive feature of buying or selling here is a local legal culture found almost nowhere else in the country: in Chicago, both buyers and sellers of residential property customarily retain attorneys, the standard contract is drafted around that expectation, and an industry of attorneys, tax-appeal firms, title agents, and housing counselors services the market. Layered on top of state law is a thick body of CITY OF CHICAGO ORDINANCES — the RLTO, the Fair Notice Ordinance, transfer taxes, and closing-day certifications — that make city practice materially different from the suburbs a few blocks past the city line.

The state-law core starts at the contract. Chicago-area form agreements — most commonly the Multi-Board Residential Real Estate Contract — contain a customary FIVE-BUSINESS-DAY ATTORNEY REVIEW AND INSPECTION PERIOD during which each side's lawyer may propose modifications to anything except the purchase price, and the home inspection can reopen negotiations over repairs and credits; sellers must deliver the ILLINOIS RESIDENTIAL REAL PROPERTY DISCLOSURE REPORT, the state RADON disclosure, and federal lead-paint disclosures for pre-1978 housing, while a Chicago condominium purchase adds the Section 22.1 disclosure of association finances under the Illinois Condominium Property Act, plus a paid-assessment letter and, for the city, a heating-cost disclosure. When a mortgage fails, Illinois is a JUDICIAL FORECLOSURE state under the ILLINOIS MORTGAGE FORECLOSURE LAW (735 ILCS 5/15): the lender must sue in the Chancery Division, the homeowner holds a right of REINSTATEMENT for 90 days after service and a right of REDEMPTION running seven months from service or three months from judgment, whichever is later, and every sale must survive a court confirmation hearing — with the county's Chancery Division operating a MORTGAGE FORECLOSURE MEDIATION PROGRAM that pairs homeowners with HUD-approved housing counselors before a case races to judgment. One thing Illinois law forbids outright is rent control, banned statewide by the RENT CONTROL PREEMPTION ACT — a recurring flashpoint in Chicago politics, but settled law as of early 2026.

Property taxes are a Chicago homeowner's defining expense obsession, and the county runs a distinctive system. The Assessor revalues one-third of Cook County each year on a TRIENNIAL cycle — the CITY OF CHICAGO, the north suburbs, and the south suburbs each take their turn — so Chicago is reassessed every third year, triggering a ritual appeal season. Homeowners may appeal first to the Assessor's office when their township opens (the city is divided into township-like assessment districts), then to the BOARD OF REVIEW, an independent three-commissioner body whose filing windows are short and unforgiving, and after that to the ILLINOIS PROPERTY TAX APPEAL BOARD or the circuit court. Appeals are free, no lawyer is required for a residential appeal, and the winning evidence is usually simple — comparable assessments, a recent purchase price, or errors in the property's recorded characteristics — which is why appealing has become close to a civic custom. Exemptions do quiet work: the HOMEOWNER EXEMPTION, SENIOR EXEMPTION, and income-qualified SENIOR FREEZE can cut thousands from a bill, and missed exemptions can often be recovered for prior years through a CERTIFICATE OF ERROR. The stakes are heaviest in disinvested South and West Side neighborhoods, where high effective rates collide with modest values, and at the system's bottom edge, where unpaid bills feed the annual TAX SALE; post-TYLER V. HENNEPIN reforms and the county's indemnity fund have softened, but not eliminated, the risk that a modest tax debt consumes a home's entire equity.

Chicago's landlord-tenant law is among the most tenant-protective in the country, and it is CITY-SPECIFIC. The CHICAGO RESIDENTIAL LANDLORD AND TENANT ORDINANCE (RLTO) governs most rentals in the city: security deposits earn interest and must be handled with receipts and strict timelines, violations carry penalties of twice the deposit plus attorney fees, tenants hold repair-and-deduct and lockout protections, and a landlord must attach an RLTO SUMMARY to every lease. Only owner-occupied buildings of six units or fewer escape most of its reach. The CHICAGO FAIR NOTICE ORDINANCE, in force since 2020, then requires escalating advance notice before a rent increase or non-renewal keyed to how long the tenant has lived there — 30 days under six months of tenancy, 60 days between six months and three years, and 120 days after three years — a protection tenants in the suburbs and downstate do not have. The KEEP CHICAGO RENTING ORDINANCE protects tenants living in foreclosed buildings, requiring the new owner to honor leases or pay a relocation fee. Eviction still follows the ILLINOIS EVICTION ACT: a 5-DAY NOTICE for nonpayment, a 10-DAY NOTICE for lease violations, or a 30-DAY NOTICE to end a month-to-month tenancy (subject to Fair Notice), then a lawsuit, a judgment, and enforcement by the COOK COUNTY SHERIFF alone — self-help lockouts are illegal everywhere in Illinois and generate RLTO damages in Chicago. The eviction court has been remade since the pandemic: the EARLY RESOLUTION PROGRAM stations free lawyers at the Daley Center for unrepresented tenants and small landlords, and courts retain sealing authority that can keep a dismissed or settled case off a tenant's screening record.

Free and low-cost help is unusually deep in Chicago. LEGAL AID CHICAGO and the LAWYERS' COMMITTEE FOR BETTER HOUSING defend tenants and fight uninhabitable conditions; CARPLS operates the county's legal-aid hotline and staffs advice desks at the Daley Center; COOK COUNTY LEGAL AID FOR HOUSING AND DEBT (CCLAHD) bundles eviction, foreclosure, and consumer-debt help with mediation; and HUD-approved housing-counseling agencies across the city handle mortgage workouts and pre-purchase counseling at no charge. The practical playbook follows the city's rhythms. Buyers: use the attorney-review window aggressively — it is your one chance to renegotiate after the inspection — and budget for the CITY OF CHICAGO TRANSFER TAX (which is markedly higher than the state and county stamps and includes a CTA portion), a survey, title insurance, and the always-in-arrears property-tax proration before closing, plus the city's zoning and water certifications. Homeowners: check every exemption on the second-installment bill, calendar your assessment district's Assessor and Board of Review windows, and appeal in reassessment years even if you appeal at no other time. Owners in default: answer the foreclosure summons within 30 days, ask about the Chancery mediation program immediately, and treat any stranger offering to "save your home" in exchange for a deed as a presumptive scam — deed theft and rescue fraud track the foreclosure docket, and the Illinois Attorney General takes those complaints. Tenants: put repair demands in writing, photograph everything at move-in and move-out, and show up on the first eviction court date, where the Early Resolution Program can turn a default judgment into a negotiated, sealed resolution. In Chicago real estate, the deadlines are short, the ordinances are hyper-local, and the people who read them first usually win.