As used in this Act, unless the context requires otherwise:
(a) "Single dwelling unit" means any apartment, efficiency apartment, kitchenette apartment, sleeping room, dwelling room or any other portion of any building or structure that is occupied or resided in by a family unit.(b) "Family unit" means any person maintaining a household, or 2 or more persons maintaining a common household. A person is deemed to be maintaining a household even though the room or rooms being occupied are only sleeping rooms.(c) "Dwelling structure" means any private home or residence, or any building or structure containing one or more single dwelling units for one or more family units, living independently of each other. A family unit is deemed to live independently of another family unit even though the family units may be required to share cooking facilities, laundry facilities or bathroom facilities. Dwelling structure units do not include public or private hospitals, public or private school dormitories, fraternity houses, convents, monasteries, mental institutions, penal institutions, seminaries, State licensed nursing homes or shelter care homes, or any federal, State, county or municipal institution or home.(d) "Contract seller" means the owner of a dwelling structure, or the owner's agent who executes a contract to sell a dwelling structure for the owner.(e) "Contract" means any contract or agreement whereby a contract seller agrees to sell and a buyer agrees to buy a dwelling structure and the contract seller continues to have an interest, as security for the purchase price or otherwise, in that property. The term "contract" includes contracts for deeds, bonds for deeds or any other sale or legal device whereby a dwelling structure is sold, conveyed or transferred for a consideration.