Walla Walla County, WA Home Business: Signage Rules (2026)

Section 17.08.260(B) folds the sign ban into the same condition that governs a home occupation's outward appearance generally, stating there shall be no exterior display, no exterior sign, no exterior storage of materials or equipment (excluding one occupation related vehicle), and no variation from the residential character of the principal building. The same subsection bars installing any special equipment different from normal residential equipment on the exterior, and prohibits offensive noise, vibration, smoke, dust, odors, heat, or glare from the operation, tying the sign ban to a broader rule that the property must look like an ordinary residence from the street.

The condition also cross-references Walla Walla County Code Chapter 8.24, Debris and Excessive Vegetation, meaning outdoor clutter tied to the business, signage included, can trigger that chapter's separate enforcement as well as a home-occupation violation. The rule applies identically whether the operator holds a Type I or Type II home occupation permit; Section 17.08.261 does not carve out a larger-business exception to the no-exterior-sign condition. Because the sign ban is written as a mandatory permit condition rather than a discretionary standard, Community Development does not have authority to approve an exterior sign for a home occupation through the ordinary Type I or Type II review process; a business that needs street signage has to relocate to a commercially zoned property instead.