55 ILCS 5/5-1063
For the purpose of promoting and safeguarding the public health, safety, comfort and welfare, a county board may prescribe by resolution or ordinance reasonable rules and regulations (a) governing the construction and alteration of all buildings, structures and camps or parks accommodating persons in house trailers, house cars, cabins or tents and parts and appurtenances thereof and governing the maintenance thereof in a condition reasonably safe from hazards of fire, explosion, collapse, electrocution, flooding, asphyxiation, contagion and the spread of infectious disease, where such buildings, structures and camps or parks are located outside the limits of cities, villages and incorporated towns, but excluding those for agricultural purposes on farms including farm residences, but any such resolution or ordinance shall be subject to any rule or regulation heretofore or hereafter adopted by the State Fire Marshal pursuant to "An Act to regulate the storage, transportation, sale and use of gasoline and volatile oils", approved June 28, 1919, as amended; (b) for prohibiting the use for residential purposes of buildings and structures already erected or moved into position which do not comply with such rules and regulations; and (c) for the restraint, correction and abatement of any violations.
In addition, the county board may by resolution or ordinance require that each occupant of an industrial or commercial building located outside the limits of cities, villages and incorporated towns obtain an occupancy permit issued by the county. The county board may by resolution or ordinance require that an occupancy permit be obtained for each newly constructed residential dwelling located outside the limits of cities, villages, and incorporated towns, but may not require more than one occupancy permit per newly constructed residential dwelling. Such permit may be valid for the duration of the occupancy or for a specified period of time, and shall be valid only with respect to the occupant to which it is issued. A county board may not impose a fee on an occupancy permit for a newly constructed residential dwelling issued pursuant to this Section. If, before the effective date of this amendatory Act of the 96th General Assembly, a county board imposes a fee on an occupancy permit for a newly constructed residential dwelling, then the county board may continue to impose the occupancy permit fee.
Within 30 days after its adoption, such resolution or ordinance shall be printed in book or pamphlet form, published by authority of the County Board; or it shall be published at least once in a newspaper published and having general circulation in the county; or if no newspaper is published therein, copies shall be posted in at least 4 conspicuous places in each township or Road District. No such resolution or ordinance shall take effect until 10 days after it is published or posted. Where such building or camp or park rules and regulations have been published previously in book or pamphlet form, the resolution or ordinance may provide for the adoption of such rules and regulations or portions thereof, by reference thereto without further printing, publication or posting, provided that not less than 3 copies of such rules and regulations in book or pamphlet form shall have been filed, in the office of the County Clerk, for use and examination by the public for at least 30 days prior to the adoption thereof by the County Board.
Beginning on the effective date of this amendatory Act of the 92nd General Assembly, any county adopting a new building code or amending an existing building code under this Section must, at least 30 days before adopting the building code or amendment, provide an identification of the building code, by title and edition, or the amendment for identification under Section 10.18 of the Capital Development Board Act . For the purposes of this Section, "building code" means any ordinance, resolution, law, housing or building code, or zoning ordinance that establishes construction related activities applicable to structures in the county.
The violation of any rule or regulation adopted pursuant to this Section, except for a violation of the provisions of this amendatory Act of the 92nd General Assembly and the rules and regulations adopted under those provisions, shall be a petty offense.
All rules and regulations enacted by resolution or ordinance under the provisions of this Section shall be enforced by such officer of the county as may be designated by resolution of the County Board.
No such resolution or ordinance shall be enforced if it is in conflict with any law of this State or with any rule of the Department of Public Health.
55 ILCS 5/5-1063