Mountain View, CA Home Business: Signage Rules (2026)
Key Facts
- Signage allowed
- None, zero exceptions
- Window displays
- Prohibited
- Street visibility
- Use must be invisible
- Applies to
- Every home occupation type
- Enforcement risk
- License revocation
Summary
Mountain View bars any signage for a home-based business. City Code Section 36.28.85(c) states there is "no window display, advertising sign or other identification of the home occupation on the premises," a flat ban that applies to every licensed home occupation citywide.
All home occupations shall comply with all of the following operating standards, unless expressly exempt as stated in this Section: ... b.The use does not require a modification not customarily found in a dwelling, nor shall the use be visible from the street or from neighboring properties;c.There is no window display, advertising sign or other identification of the home occupation on the premises;
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 34 Update 4).
Full Breakdown
85 lists the general operating standards every home occupation must meet to keep its business license, unless expressly exempted. 88's specific standards. This pairs with subsection (b), which independently bars any modification not customarily found in a dwelling and requires that the use not be visible from the street or from neighboring properties, reinforcing that a home occupation must be functionally invisible from outside the residence. 95, which allow limited pricing signage for commercial outdoor sales areas, underscoring that the home occupation sign ban is a residential-specific restriction, not a general city sign limit.
80 only issues after the operator signs a statement of compliance with these standards, meaning a sign or window display placed after licensure is a breach of that signed compliance statement, not merely a technical oversight.
Violations & Fines
Posting a sign, window display or other identification for a home occupation violates Section 36.28.85(c). Section 36.58.80 makes the violation a misdemeanor under City Code Section 1.7, allows the city to treat it as a public nuisance abatable under Chapter 25, and the city may revoke the business license issued on the operator's compliance statement.
Frequently Asked Questions
Can I put a small sign in my window for my home business in Mountain View?
Does the sign ban apply to cottage food or home kitchen businesses?
Why doesn't Mountain View let home businesses post any signage?
What happens if I post a sign for my home business anyway?
Sources & Official References
Other rules in Mountain View
California rules heatmap·Compare Mountain View to another location·View the California home business overview
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Signage Rules in Nearby Cities
How other cities in Santa Clara County handle signage rules.