(1) A board of county commissioners is authorized to adopt ordinances and a building code consistent with the uniform building code, 1988 edition, as promulgated by the international conference of building officials and as revised from time to time, in all or part of the county, and not embraced within the limits of any incorporated city or town. Buildings or structures used for the sole purpose of providing shelter for agricultural implements, farm products, livestock, or poultry may be excepted. The requirements shall be uniform for each class of dwelling, building, or structure. The board of county commissioners may employ qualified technical experts to assist in the preparation of the text of such ordinances and the area building code.

(2) By the date established in section 25-7-407, C.R.S., every board of county commissioners of a county which has enacted a building code, and thereafter every board of county commissioners of a county which enacts a building code, shall enact a building code provision to regulate the construction and installation of fireplaces in order to minimize emission levels. Such building code provision shall contain standards which shall be the same as or stricter than the approved emission performance standards for fireplaces established by the air quality control commission in the department of public health and environment pursuant to section 25-7-407, C.R.S.

(3) By the date established in section 30-28-211, every board of county commissioners of a county that has enacted a building code, and thereafter every board that enacts a building code, shall adopt and enforce a building energy code that meets or exceeds the standards in the 2003 version of the international energy conservation code pursuant to section 30-28-211.