Casper, WY Home Business: Signage Rules (2026)

Casper's zoning code treats a home business as a permitted accessory use in any residential district only if it meets every standard in Municipal Code section 17.12.140. The business use may occupy no more than twenty-five percent of the dwelling unit's floor area, including accessory buildings, and must cause no change in the outside appearance of the building or premises. Signage is the narrowest allowance in the section: subsection A.2 permits identification of the home occupation by a single sign that is attached flush with the dwelling, capped at one square foot in area, and never illuminated.

No other exterior advertising, window display, outside storage, or display of merchandise is permitted regardless of the sign's size. Enforcement is complaint-driven rather than proactive. If a resident files an oral or written complaint with the planning director and the city's zoning enforcement officer substantiates it, section 17.12.140(B) requires a public hearing before the planning and zoning commission to decide whether the home occupation, including any oversized or illuminated sign, may continue. Under subsection C, the commission can order the use discontinued if it violates Title 17 or harms neighborhood health, safety, and welfare; allow it to continue with new conditions; or let it continue unconditionally if it already complies.

A home occupation that has operated in violation for at least five years without city enforcement action may also continue, subject to the procedures in section 17.12.220(H)(1) through (4).