Section 627.7063 - Building code effectiveness grading schedule(1) As used in this section, the term "sinkhole loss prevention ordinance" means a county ordinance that amends the Florida Building Code and that is intended to reduce the number of sinkhole claims and the severity of sinkhole losses.(2) The commission shall adopt a building code effectiveness grading schedule by rule. The grading schedule shall evaluate the effectiveness of each sinkhole loss prevention ordinance in reducing the number of sinkhole claims and severity of sinkhole losses. Each ordinance shall be evaluated 4 years after the ordinance takes effect. The grading schedule shall be based on the effectiveness of code enforcement in each county and scientific, modeling, and engineering methodologies. The rules shall further mandate insurance premium discounts or surcharges on personal residential property insurance based on a property's compliance with an ordinance and the grade assigned to the applicable sinkhole loss prevention ordinance.