Smoke Alarm requirments for 1&2 Family Dwellings can be found in R313 of the Florida Building Code - Residential.
Fire Alarm and Detection Systems for other than 1&2 Family Dwellings can be found in Section 907 of the Florida Building Code.
Keep in mind that ALL buildings other than 1&2 Family Dwellings must also comply with the Florida Fire Prevention Code.
Section 13.7 of the FFPC 1 covers requirements for smoke detection along with section 9.6 of the FFPC 101.
The first two references are typcially enforced by the local building department. The second two are typically enforced by the Fire Marshal / Inspectors.
ALL 4 sections reference the NFPA 72 for specific compliance.
Bryan P. Holland, ICC Master Code Professional
CBO, Plans Examiner, Inspector, Instructor
Secretary - IAEI Florida Gulf Coast Division
Vice President - BOAF Gulf Coast Chapter