Costa Mesa, CA Home Business: Signage Rules (2026)
Key Facts
- Governing section
- Municipal Code § 13-168(h)
- Signs allowed
- None
- Address advertising
- Phone directory listing only
- Exterior alterations
- Prohibited, incl. lighting
- Enforcement
- Permit revocation via § 13-169
Summary
Home occupations in Costa Mesa may display no signs at all and cannot advertise using the home address, except in the telephone directory, under Municipal Code Section 13-168(h), one of the evaluation standards every home occupation permit must meet.
No signs shall be displayed in connection with the home occupation, and there shall be no advertising using the home address, with the exception of advertising in the telephone directory.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4894290; v9 updated 2025-11-18).
Full Breakdown
Any residentially-zoned home business in Costa Mesa must first obtain a home occupation permit from the planning division, filed with the finance division alongside the business license application under Sections 13-164 and 13-165. ' That means no yard sign, window sign, door placard, or vehicle-mounted sign identifying the business, and no flyers, business cards, or online listings that print the residential street address, other than a listing in a phone directory. The same section also requires that the exterior of the dwelling not be altered, remodeled, or lit for the home occupation in any way, reinforcing that a permitted home business must be visually indistinguishable from the surrounding houses.
A home occupation permit stays valid only for the original permittee and the designated address, and any violation of the Section 13-168 standards, including posting a sign, is grounds for revocation under Section 13-169 after written notice from the planning division.
Violations & Fines
Displaying a sign or advertising the home address (other than a phone directory listing) violates Section 13-168(h) and is listed grounds for permit revocation under Section 13-169(a)(1). The planning division must notify the permittee in writing of the reasons for revocation, and the permittee may appeal under Title 2, Chapter IX, Appeal, Rehearing and Review Procedure; operating a revoked or unpermitted home occupation also risks denial of the underlying business license.
Frequently Asked Questions
Can I put a small sign in my yard for my home business in Costa Mesa?
Can I advertise my home business's address online?
What happens if I post a sign anyway?
Sources & Official References
Other rules in Costa Mesa
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