The national firm, which evaluates municipalities' capabilities for property and casualty insurers, ranks the effectiveness of local building-code enforcement to help determine how well homes and commercial structures in a community will hold up against hurricanes, earthquakes and other natural disasters.
ISO grades on a scale of one to 10, with one being the best. So far, Fremont, Calif., is the only other city to receive the coveted Class 1 distinction for building-code enforcement.
Coral Gables scored 96.86 points out of a possible 100 in ISO's review - the best performance of any of the 8,931 municipalities that ISO has evaluated in 44 states over the past five years. The 14-square-mile city was also awarded top rank for fire protection of homes and businesses.