The General Assembly of Illinois finds: (1) that there is a serious housing shortage in this state; (2) that rising costs in the building construction field has seriously impeded the building of new housing, particularly for moderate and low income citizens; (3) that the existing housing stock is continuously depleted through demolition resulting from aging buildings, urban renewal, highway construction and other necessary public improvements; (4) that advances in the construction of mobile homes has significantly increased the importance of this mode of housing; (5) that through proper regulation and licensing mobile homes can contribute to the quality housing of Illinois citizens.