Want to skip straight to checking your own building? Use the RentCheckMe address checker.
Northbrook is a village in Cook County, Illinois, with a population of approximately 35,000 residents. A notable share of Northbrook households rent rather than own, and renters here — as elsewhere in Illinois — frequently search for answers about security deposit returns, repair obligations, and eviction procedures. Understanding your rights under Illinois law is essential for navigating any dispute with a landlord.
Unlike Chicago, which has its own Residential Landlord and Tenant Ordinance (RLTO), Northbrook has no local tenant-protection ordinances beyond what Illinois state law provides. That means the Illinois Security Deposit Return Act (765 ILCS 710), the Security Deposit Interest Act (765 ILCS 710/0.01 et seq.), and general Illinois landlord-tenant common law are the primary frameworks governing your tenancy. The Village of Northbrook itself does not maintain a rent registry or local housing court; disputes are handled through the Cook County Circuit Court.
This article is intended as general legal information only and does not constitute legal advice. Laws and local interpretations can change, and tenants facing specific disputes should consult a licensed Illinois attorney or contact a local legal aid organization for guidance tailored to their situation.
Northbrook has no rent control, and Illinois state law expressly prohibits it. Under 765 ILCS 720 — the Rent Control Preemption Act — no unit of local government in Illinois may enact, enforce, or maintain any ordinance or resolution that would regulate the amount of rent charged for leasing private residential or commercial property. This preemption applies to every municipality in Illinois, including Northbrook and all other Cook County suburbs outside of Chicago's city limits.
In practical terms, this means your landlord in Northbrook may raise your rent by any amount at the end of a lease term, provided they give you the proper advance written notice. There is no cap on rent increases, no requirement to justify a rent hike, and no local rent board to file a complaint with. Your best protection against steep increases is to negotiate lease terms in writing before signing and to be aware of the required notice periods that apply when your tenancy is changed or terminated.
Implied Warranty of Habitability: Under Illinois common law, every residential lease includes an implied warranty of habitability. Landlords must maintain rental units in a condition fit for human habitation — including functioning heat, plumbing, structural safety, and freedom from pest infestation. If a landlord fails to remedy a serious habitability defect after reasonable notice, Illinois courts have recognized tenant remedies including rent withholding and repair-and-deduct in appropriate circumstances, though tenants should seek legal guidance before exercising these remedies.
Security Deposit Protections (765 ILCS 710; 765 ILCS 710/0.01): The Illinois Security Deposit Return Act requires landlords who hold security deposits on residential properties with five or more units to return the deposit within 30 days of the tenant vacating, along with an itemized statement of any deductions for damages beyond normal wear and tear. The Illinois Security Deposit Interest Act requires landlords of buildings with 25 or more units to pay interest on security deposits held for more than six months.
Anti-Retaliation (765 ILCS 720/1): Illinois law prohibits landlords from retaliating against tenants who complain to government authorities about code violations, request repairs, or exercise any other legal tenant right. Retaliatory acts may include eviction, rent increases, or reduction of services. A tenant subjected to retaliation may raise it as a defense in an eviction proceeding or pursue affirmative remedies in court.
Notice Requirements: For month-to-month tenancies, Illinois law requires at least 30 days written notice from either party to terminate the tenancy. For fixed-term leases, the lease itself governs termination. These notice requirements are grounded in the Illinois Code of Civil Procedure (735 ILCS 5/9-207).
Lockout and Utility Shutoff Prohibition: Self-help eviction — including changing locks, removing doors, or shutting off utilities to force a tenant out — is illegal in Illinois. A landlord who engages in self-help eviction may be liable for damages to the tenant. The lawful eviction process requires a court order.
Illinois does not impose a statewide cap on the amount a landlord may collect as a security deposit. However, the Illinois Security Deposit Return Act (765 ILCS 710) imposes strict requirements on landlords who rent residential units in buildings with five or more units.
Return Deadline: The landlord must return the security deposit — minus any lawful deductions — within 30 days after the tenant vacates the unit. If the landlord intends to make deductions for damages beyond normal wear and tear, the landlord must provide the tenant with an itemized written statement of deductions along with paid receipts or repair estimates within that same 30-day window. A second, final accounting (with receipts) must be provided within 30 days of the repair being completed if work was not yet done at the time of the initial statement.
Penalty for Wrongful Withholding: If a landlord fails to comply with the requirements of 765 ILCS 710 — including failing to return the deposit on time or failing to provide a proper itemized statement — the tenant may be entitled to recover the entire security deposit plus damages. Illinois courts have held that failure to comply forfeits the landlord's right to retain any portion of the deposit. Tenants should document the condition of the unit at move-in and move-out with photographs and written records.
Interest on Deposits (765 ILCS 710/0.01): Landlords of buildings with 25 or more units must pay interest on security deposits held for more than six months, at a rate set annually by the Illinois Department of Financial and Professional Regulation. Failure to pay interest may entitle the tenant to recover the interest amount plus a penalty.
Note for Smaller Buildings: Tenants in buildings with fewer than five units are not covered by the Security Deposit Return Act's statutory penalties, but may still have common law remedies. Consulting a legal aid organization is advisable in those situations.
In Northbrook, a landlord must follow Illinois's formal eviction process — governed by the Illinois Code of Civil Procedure (735 ILCS 5/9-101 et seq.) — and cannot remove a tenant without a court order. Self-help eviction, including changing locks, removing belongings, or shutting off utilities, is illegal.
Step 1 — Written Notice: Before filing for eviction, the landlord must serve the tenant with written notice. The type and length of notice depends on the reason for eviction:
Step 2 — Filing in Court: If the tenant does not comply with the notice, the landlord may file an eviction complaint in the Cook County Circuit Court. Northbrook matters are typically handled through the Rolling Meadows branch of the Cook County Circuit Court (2121 Euclid Ave., Rolling Meadows, IL). The tenant is served with a summons and has the right to appear and contest the eviction at a hearing.
Step 3 — Court Hearing: Both parties may present evidence. Tenants may raise defenses such as improper notice, retaliation, or habitability failures. If the court rules in the landlord's favor, it issues an order of possession.
Step 4 — Enforcement: The Cook County Sheriff enforces the order of possession. The tenant is given a brief period to vacate before the Sheriff may physically remove them. The landlord may not physically remove the tenant or their belongings before the Sheriff executes the order.
No Just Cause Requirement: Northbrook has no just cause eviction ordinance. A landlord may choose not to renew a lease without stating a reason, as long as proper notice is given and the court process is followed.
The information provided in this article is for general informational purposes only and does not constitute legal advice. While we strive to keep this content accurate and up to date as of April 2026, Illinois landlord-tenant laws, local ordinances, and court interpretations may change. The specific facts of your situation can significantly affect your rights and remedies. Tenants facing housing disputes in Northbrook, Illinois should consult a licensed Illinois attorney or contact a qualified legal aid organization for advice tailored to their individual circumstances. RentCheckMe is not a law firm and does not establish an attorney-client relationship with readers.
Find out if your home is covered by rent control or tenant protections.
Use the Address Checker →We'll email you if the rent cap, coverage rules, or tenant protections change — no spam, unsubscribe any time.