No county or municipality shall exercise the community redevelopment authority conferred by this part until after the governing body has adopted a resolution, supported by data and analysis, which makes a legislative finding that the conditions in the area meet the criteria described in s. 163.340(7) or (8). The resolution must state that:

(1) One or more slum or blighted areas, or one or more areas in which there is a shortage of housing affordable to residents of low or moderate income, including the elderly, exist in such county or municipality; and
(2) The rehabilitation, conservation, or redevelopment, or a combination thereof, of such area or areas, including, if appropriate, the development of housing which residents of low or moderate income, including the elderly, can afford, is necessary in the interest of the public health, safety, morals, or welfare of the residents of such county or municipality.