Santa Rosa, CA Home Business: Signage Rules (2026)
Key Facts
- Home Occ. Signs
- No exterior signs except limited nameplate (Section 20-42.070)
- Single-Family Residential Cap
- 6 sq ft area, 6 ft height
- Setback
- At least 5 ft inside property line (residential)
- Non-SFR Lot up to 20,000 sq ft
- Max 12 sq ft per sign
- Non-SFR Lot over 20,000 sq ft
- Max 24 sq ft per sign
- Sign Permit
- Required for new and modified signs (Ch. 20-38)
- Prohibited
- Billboards, windblown signs, A-frames, signs on public property
Summary
Per Santa Rosa Zoning Code Section 20-42.070, a home occupation must have no exterior signs except limited name identification allowed by Code. Citywide Chapter 20-38 (Signs) caps single-family residential signs at six square feet of area and six feet of height, and signs must sit at least five feet inside the property line.
A Home Occupation in Santa Rosa must... have no exterior signs, except limited name identification allowed by Code. Most signs require a Sign Permit. A Sign Permit is needed when installing a new sign or replacing or modifying an existing sign. Prohibited signs include off-site signs (billboards), moving, flashing, or windblown signs, and signs that create safety hazards or obstruct visibility. Some signs may be allowed without a permit, such as interior signs, temporary signs in certain zoning districts, and small directional or informational signs. The full sign standards are in Zoning Code Sections 20-38.040 (Signs allowed without a Sign Permit), 20-38.060 (Zoning District Sign Standards), and 20-38.080 (Prohibited Signs). Prohibited signage includes un-permitted billboards, wind-blown signs and A-frames, and anything taped or posted on public property.
Full Breakdown
Sign regulation for home-based businesses sits at the intersection of two Santa Rosa Zoning Code chapters. 070 - requires that a home occupation have 'no exterior signs, except limited name identification allowed by Code,' per the City's published Home Business Permits page. ' For non-single-family residential lots, a maximum of 12 square feet per freestanding or wall sign applies on lots of 20,000 square feet or less and up to 24 square feet on larger lots, with no wall sign exceeding 20 feet in height.
org/582) confirms that most signs require a Sign Permit, including installing a new sign or replacing or modifying an existing sign, with limited exemptions for interior signs, certain temporary signs, and small directional or informational signs. Prohibited sign categories explicitly include off-site signs (billboards), moving, flashing, or windblown signs, and signs that create safety hazards or obstruct visibility; the City's Common Codes Enforced page also lists un-permitted billboards, wind-blown signs and A-frames, and anything taped or posted on public property as prohibited. 080 (Prohibited Signs).
For cottage food operations, Cal. Gov. Code Section 51035(a)(2)-(3) permits Santa Rosa to apply reasonable signage standards, but only consistent with the local sign and noise rules - it does not authorize a higher restriction on cottage food than on other home occupations.
Violations & Fines
Posting an exterior commercial sign at a home occupation in excess of the limited nameplate allowed by Section 20-42.070, or installing any sign without a required Sign Permit under Chapter 20-38, is a Zoning Code violation. The Code Compliance Division may issue a notice of violation, require removal of the sign, and impose administrative citations. Windblown signs, A-frames, and billboards posted off-site or on public property are subject to immediate removal under the City's prohibited-sign rules.
Frequently Asked Questions
Can I put a sign on my house advertising my home business?
Are sandwich-board (A-frame) signs allowed at a home business?
Do I need a Sign Permit even for a small business sign at my house?
Sources & Official References
Other rules in Santa Rosa
California rules heatmap·Compare Santa Rosa to another location·View the California home business overview
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