The Florida Statutes reads as follows: (copy and pasted from State website on 09/01/2011) 481.229 Exceptions; exemptions from licensure.—(1) No person shall be required to qualify as an architect in order to make plans and specifications for, or supervise the erection, enlargement, or alteration of: (a) Any building upon any farm for the use of any farmer, regardless of the cost of the building; (b) Any one-family or two-family residence building, townhouse, or domestic outbuilding appurtenant to any one-family or two-family residence, regardless of cost; or (c) Any other type of building costing less than $25,000, except a school, auditorium, or other building intended for public use, provided that the services of a registered architect shall not be required for minor school projects pursuant to s. 1013.45. The above referenced Florida Statute is listed as an exception to licensure as an Architect. Under section (b) above it is legal to provide design services for one and two family residence buildings, regardless of the cost, without being licensed as an Architect. When it comes to structural modifications and the impact they have on one and two family residence buildings, I always have a Florida Licensed Structural Engineer provide consultation services and sealed plans for permitting. Should you have any questions or concerns about the information posted here, please review the Florida Statutes by clicking on this link - CHAPTER 481 FLORIDA STATUTES