Montebello, CA Home Business: Signage Rules (2026)

Montebello's home occupation ordinance treats visible commercial signage as a threat to residential character, and Section 17.59.050 backs that up with an outright ban rather than a size limit: on-site signs advertising a home occupation shall not be permitted, under subsection (A)(6). That sits alongside a broader rule in subsection (A)(7) barring any alteration of the residential character of the site, which the planning manager applies to exterior changes such as commercial-style lighting, awnings, or parking modifications made to advertise the business. Subsection (A)(5) adds that equipment producing dust, fumes, noise, or odor that could interfere with neighbors is prohibited, reinforcing the idea that a home occupation must be invisible from the street.

Because a home occupation permit is reviewed and can be revoked, a homeowner who installs a yard sign, a window placard, or vehicle signage advertising the business risks the director of planning and community development voiding the permit under Section 17.59.060. The prohibition applies citywide to every home occupation permit issued under Chapter 17.59, regardless of the residential zone, and there is no waiver process built into the section for a smaller or non-illuminated sign the way the code allows for other categories of signage in Chapter 17.62.