Environmental

In Illinois, smoke detector requirements for residential properties include:

AOne smoke detector per building, placed at the main entrance
BSmoke detectors on each level of a dwelling and near sleeping areas, with specific requirements for rental properties✓ Correct
CSmoke detectors are optional for single-family homes but required for multi-family
DOnly buildings with more than 4 units require smoke detectors

Explanation

Illinois law (425 ILCS 60, Smoke Detector Act) requires smoke detectors on each level of a residential dwelling and within 15 feet of each sleeping room. Rental properties have specific requirements that landlords must meet. Chicago and other municipalities may have additional requirements. Sellers of residential property must certify that smoke detectors are installed and working—this is often a required disclosure at closing in Illinois.

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