Piscataway, NJ Home Business: Zoning & Home Occupation Permits (2026)

The Township Council defines HOME OCCUPATION in Section 21-3 of the Zoning Chapter as occupations such as dressmaking, millinery and home cooking, conducted only by the resident occupants of the dwelling. The floor-area cap is explicit: no more than one-third of the area of a single floor may be devoted to the occupation, and equipment not ordinarily found in a residence is barred outright. Piscataway also prohibits any display of products or advertising visible from the street, so a sign, sample table or storefront window is not permitted for a home-based business.

The code separately bars any architectural or structural change to a dwelling to accommodate the use, meaning an owner cannot add a separate entrance, expand a room or build an addition to run the occupation. A related classification, HOME PROFESSIONAL USE, covers a resident physician, dentist, lawyer, architect, engineer, accountant or teacher, restricts the office to the ground floor at no more than half its area, caps non-family employees at two, and likewise bars structural changes. Under Section 21-601, no land or building may be used for a purpose other than the principal and accessory uses listed for its zone in the Schedule of General Requirements, so a home occupation must be a permitted accessory use in the applicant's zone before it can operate; the Zoning Officer administers permits and certificates of occupancy under that section.

Because it is treated as an accessory use rather than a licensed business category, exceeding the one-third floor limit, adding street-visible advertising, or altering the structure converts the property to a zoning violation, and Section 21-17 extends liability to any agent, contractor or other person who assists in it.