The city of Sarasota and the county of Sarasota each have their own regulations regarding home based businesses, which are similar.
Here is the information from the city of Sarasota regarding a home based business:
General Use Limitations. Home occupations shall be subject to all use limitations applicable in the zone district in which they are located, the following additional limitations, and such limitations which may be imposed by the Director of Building, Zoning & Code Compliance.
i. The principal person or persons conducting the home occupation shall reside in the dwelling and all employees of the home occupation shall be inhabitants of the dwelling.
ii. The home occupation shall be located within the dwelling or an accessory building thereto, and does not exceed twenty-five (25) percent of the total gross combined floor area of the buildings or five hundred (500) square feet, whichever is less.
iii. The occupation shall not alter the outside appearance of the dwelling unit.
iv. There shall be no displays, or sale of merchandise on the premises.
v. There shall be no signs other than the address and name of the resident.
vi. There shall be no use or storage of material or mechanical equipment not recognized as being part of a normal household use.
vii. Activities conducted and equipment or material shall not change the fire safety or occupancy classifications of the premises.
viii. No traffic is generated by such home occupation on greater volume than would normally be generated by the dwelling unit without such home occupation.
ix. No traffic is generated by such home occupation so as to require any additional on-site parking spaces other than those spaces normally utilized by the dwelling unit without the home occupation.
If in doubt, contact the city or county (depending on location of the property) building department's zoning office for clarification.