The county board of every county which issues building permits for the construction of buildings may discontinue the issuing of such permits within a prescribed area if it determines the issuing of further building permits would be a danger to health or welfare.
     A county board making such a determination must, however, give public notice by one publication in a newspaper having general circulation in its county of its decision to discontinue issuance of building permits in the prescribed area, designating that area and stating the condition or hazard constituting the danger to health or welfare.