Roommates Guests

Can landlords screen new roommates before approval?

Illinois rental guidance and tenant-landlord operational information.
Published April 20, 2026 State-specific rental guidance Update This Question
Reviewed by Tenants & Landlords Editorial Team

This rental guidance was reviewed by the Tenants & Landlords Intelligence Team, specializing in lease agreements, notices, rent disputes, deposits, evictions, and tenant-landlord operational procedures.

Asked 43 days ago · Illinois

Can Landlords Screen New Roommates Before Approval in Illinois?

When renting a unit in Illinois, tenants often consider adding roommates to share living expenses. However, a common question arises: Can landlords screen new roommates before giving their approval? Understanding the rights and responsibilities of both landlords and tenants regarding roommates and guests is essential for maintaining a harmonious rental experience. This guidance explains how roommate screening works under Illinois law and what tenants and landlords should know.

Legal Context in Illinois Regarding Roommate Screening

In Illinois, the relationship between landlords, tenants, and roommates is shaped by lease agreements and state landlord-tenant laws. While the Illinois Residential Tenant Landlord Ordinance (RTLO) governs many aspects of rental housing, specific rules about roommates primarily depend on the lease terms and the involvement of the parties.

Lease Agreement Controls the Process

  • Written Agreements: Most landlords include clauses in leases that address additional occupants or roommates. Such clauses typically require tenants to obtain the landlord’s prior written consent before allowing someone else to move in.
  • Reasonable Approval Required: Illinois courts generally hold that landlords must act reasonably when approving or denying new roommates. A landlord cannot arbitrarily refuse a roommate if the individual otherwise qualifies under the landlord’s standards.

Landlord’s Right to Screen New Roommates

Landlords in Illinois generally have the right to screen new roommates before approval because:

  • They remain responsible for all occupants on the lease.
  • Screening protects landlords from potential risks such as unpaid rent, property damage, or disturbances.
  • Screening typically includes background checks, credit reports, and rental history verifications.
However, screening must comply with federal and Illinois fair housing laws prohibiting discrimination based on race, color, national origin, religion, sex, familial status, disability, marital status, sexual orientation, or other protected classes.

Practical Steps for Landlords When Screening Roommates

If a tenant wishes to add a roommate, landlords typically take these steps:

  1. Require Written Request: Tenants should submit a formal written request naming the prospective roommate.
  2. Provide Application Materials: Landlords often request that the proposed roommate complete a rental application. This allows landlords to collect personal information relevant for screening.
  3. Conduct Background and Credit Checks: Landlords may perform credit, criminal background, and eviction history checks, ensuring the individual meets their screening criteria.
  4. Evaluation and Approval: After reviewing the information, landlords approve or deny the roommate based on pre-established standards.
  5. Addendum to Lease: If approved, landlords typically add the new roommate to the lease via an addendum or new lease, ensuring legal responsibility for rent and compliance with rules.

Tenant Considerations Regarding Roommates and Guests

Difference Between "Roommates" and "Guests"

Illinois law and lease agreements make a distinction between roommates (additional tenants) and guests:

  • Roommates: Individuals who live in the unit long-term and share tenancy responsibilities. They usually require landlord approval and inclusion on the lease.
  • Guests: Visitors who stay temporarily without becoming tenants. Most leases permit guests for limited durations without landlord permission, though extended or frequent stays could violate lease terms.

Requesting Roommate Approval

Tenants planning to add a roommate should:

  • Review their lease carefully for roommate or additional occupant clauses.
  • Obtain landlord approval in writing before the new person moves in.
  • Ensure the prospective roommate completes all necessary applications and screenings as required.

Landlords Cannot Unreasonably Withhold Consent

Under Illinois law, refusal to approve a roommate must be based on legitimate, non-discriminatory reasons:

  • Poor credit history.
  • Criminal background that poses safety concerns.
  • Prior eviction or rental payment delinquencies.
A landlord cannot deny approval based on arbitrary reasons or discriminatory practices. Tenants have recourse to challenge an unreasonable denial through local housing authorities or courts.

Summary: Screening New Roommates in Illinois

  • Landlord Approval Required: Tenants must generally obtain landlord approval before adding a new roommate.
  • Screening Process Allowed: Landlords have the right to screen new roommates using rental applications, credit and background checks.
  • Reasonable and Non-Discriminatory: Landlords must apply their screening standards reasonably and comply with fair housing laws.
  • Formalizing the Arrangement: Approved roommates should be added to the lease to clarify responsibilities.
  • Temporary Guests vs. Roommates: Short-term guests do not usually require approval, but long-term tenants do.
By understanding these guidelines, both tenants and landlords in Illinois can navigate roommate arrangements smoothly while protecting their legal rights and interests. If questions arise, reviewing the lease agreements thoroughly and consulting local tenant resources or legal professionals is recommended.

Ask a Rental Question