Illinois has no statewide statute requiring advance notice before a landlord enters a rental unit. Entry is governed by the lease and the common-law covenant of quiet enjoyment, under which courts expect reasonable notice. Chicago and Cook County are separate, stricter regimes that require at least 2 days' notice.
No provision of 765 ILCS or any other Illinois statute sets a statewide landlord-entry notice period. A landlord's right to enter therefore depends on the lease terms and the implied covenant of quiet enjoyment, which Illinois courts read to require reasonable notice (commonly treated as 24 to 48 hours) and entry at reasonable times, with exceptions for genuine emergencies. The Chicago Residential Landlord and Tenant Ordinance is a separate, stricter regime: it requires at least 2 days' notice before entry for inspections, repairs, or showings, with limited emergency exceptions. Cook County's Residential Tenant and Landlord Ordinance imposes a comparable 2-day notice rule in covered suburban areas. Tenants outside those jurisdictions rely on lease language and common law.
No specific statutory penalty statewide. A tenant subjected to repeated unreasonable or harassing entry may claim breach of the covenant of quiet enjoyment and seek damages or lease termination; under the Chicago RLTO, unlawful entry can trigger ordinance remedies including damages and attorney's fees.
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