Requires landlords to check the state sex offender registry when leasing to a new tenant, subtenant or adult occupant, and to notify tenants with children under age sixteen of any listing of such tenant, subtenant or adult occupant as a level three sex offender; exempts landlord from any civil or criminal liability for damages for any discretionary decision to release relevant information pursuant to this section or for failing to release such information, unless it is shown the landlord acted with gross negligence or in bad faith.