It is a local call , , this jurisdiction assumes that if the home occupancy use is approved under our zoning regs (which limit the size and impact to the neighborhood), then it is still considered a SFD for code purposes. HOWEVER, this is all assuming that the home business isn't something like FIREWORKS SALES. If it were (and, nope, haven't had one yet), the building would be required meet more stringent code requirements. Keep in mind this would be a home BUSINESS, not just someone keeping a bunch of personal fireworks in their garage, which we couldn't do anything about.