Broomfield, CO Home Business: Signage Rules (2026)

Section 17-32-020(C) lists nine conditions a home occupation must meet to keep its status as a permitted accessory use, and clause (C)(4) is unqualified: there shall be no exterior signs or advertising. Unlike commercial businesses, which get sign allowances under the city's separate sign chapter, or even temporary retail sales stands, which section 17-31-030(H) allows to post a single freestanding sign of up to ten square feet per face, a home occupation gets no sign carve-out whatsoever. The ban sits next to the section's other visibility-limiting conditions: clause (C)(5) bars exterior storage of materials or equipment used in the business, and clause (C)(6) bars offensive vibration, smoke, dust, odors, heat, or glare noticeable at or beyond the property line.

Read together, the intent is that a home occupation should be invisible from the street: no yard sign, no window advertisement treated as exterior signage, no sandwich board, and no vehicle-mounted advertising left parked in view under the same subsection's vehicle limits. Because the prohibition is a condition of the accessory-use status itself rather than a separately licensed activity, there is no sign permit application to file for a home business, since none is allowed; a homeowner wanting to advertise has to rely on off-site advertising, a business listing, or word of mouth instead of any on-property sign.