Troy, MI Home Business: Signage Rules (2026)

H states flatly that no signs shall be used to advertise the home occupation business, a standalone rule with no size, placement, or permit carve-out. 10: paragraph B bars any change to the structure's character or appearance and any visible evidence of the business, and paragraph F requires the occupation to be conducted inside the dwelling or an accessory building with no outside display of any kind. Together, those three paragraphs mean a Troy home occupation must be functionally invisible from the street, no sign, no exterior display, and no alteration that would tip off a passerby that a business operates on the property.

This is stricter than Troy's general commercial sign rules, which regulate size and placement for business signage elsewhere in the Zoning Ordinance; for a home occupation, the rule is not a limit but a complete prohibition. 10 is a use standard that must be met for the home occupation to qualify as an accessory use at all.