Fla. Stat. § 553.906

Thermal designs and operations for renovated buildings for which building permits are obtained after March 15, 1979, must take into account insulation; windows; infiltration; and HVAC, service water heating, energy distribution, lighting, energy managing, and auxiliary systems design and equipment selection and performance. Such buildings are not required to meet standards more stringent than the provisions of the Florida Building Code-Energy Conservation. These standards apply only to those portions of the structure which are actually renovated.