Costa Mesa Sign Limits & A-Frame Rules

Signs and Advertising California 3 Minutes Read · published March 01, 2026 Flag of California

Overview of sign rules

Costa Mesa, California regulates signs through its municipal code and local planning rules. Historic districts and designated commercial corridors often have additional limits on size, placement, illumination and materials for signs; portable A-frame or "sandwich board" signs are commonly treated separately with rules for sidewalks and rights-of-way. For the controlling text, consult the City municipal code and sign-permit guidance noted below municipal code[1].

Check the municipal code text before designing or installing any sign.

A-frame (portable) signs

Portable A-frame signs are usually allowed only in limited locations, with restrictions on maximum height, footprint, anchoring, hours of display, and clear pedestrian passage. Whether a permit is required depends on whether the sign is on private property, within a public right-of-way, or in a historic district; the City Planning Division posts requirements and permit instructions sign permit and planning information[2]. Size limits and exact placement measurements are not specified on the cited page.

A-frame signs may be prohibited in public rights-of-way without express permission.

Applications & Forms

The City typically requires a Sign Permit application for new permanent signs and may require review for portable signs depending on location. The official application and submittal checklist are available from the Planning Division; fees and detailed submittal requirements are not specified on the cited page.

Penalties & Enforcement

Enforcement is carried out by Costa Mesa Code Enforcement and the Community Development / Planning Division. Where a sign violates the municipal code, the City may issue notices, orders to remove or correct, administrative fines, or initiate civil nuisance proceedings. Specific fine amounts and escalation schedules are not specified on the cited municipal pages and should be confirmed with the City Code Enforcement[3].

Respond promptly to a notice of violation to avoid escalation.
  • Common violation: signs in public right-of-way without permit.
  • Common violation: exceedance of size, height, or illumination limits.
  • Common violation: change of a historic sign without approved review.
  • Enforcement actions: correction orders, removal, administrative citations.
  • Fines/penalties: not specified on the cited page.
  • Appeals/review: process and time limits not specified on the cited page; contact Planning or Code Enforcement for appeal steps.

Applications & Forms

How to apply: obtain the City Sign Permit application and checklist from Planning, submit plans showing sign dimensions and mounting, and pay the applicable filing fee; the specific form name and fee schedule are not specified on the cited pages. For enforcement matters, follow the contact and complaint instructions on the Code Enforcement page Code Enforcement[3].

Action steps

  • Confirm whether the sign is in a public right-of-way or private property.
  • Download and complete the Sign Permit application from Planning.
  • Contact Code Enforcement promptly if you receive a notice.
  • Allow time for review; do not install prohibited signs while a permit is pending.

FAQ

Do I need a permit for an A-frame sign?
Maybe — it depends on whether the sign is placed on private property, in a public right-of-way, or within a historic district; contact Planning and consult the municipal code municipal code[1].
What size can an A-frame sign be?
Size limits vary by zone and frontage; specific numeric limits are not specified on the cited planning pages and must be confirmed with the Planning Division.
How do I report an illegal sign?
Report illegal or hazardous signs to Code Enforcement via the City contact page Code Enforcement[3].

How-To

  1. Check the Costa Mesa municipal code for sign regulations and any historic-district rules municipal code[1].
  2. Contact the Planning Division or review the Sign Permit guidance to confirm whether an application is required planning sign permit[2].
  3. Prepare drawings and photos showing proposed sign location, dimensions, materials and mounting; complete the Sign Permit application.
  4. Submit the application and any fee to the Planning Division; respond to any City correction requests.
  5. If cited, follow the Code Enforcement notice, correct the violation, or file an appeal using the City's prescribed route.

Key Takeaways

  • Always verify whether an A-frame sign will sit in the public right-of-way.
  • Obtain and follow the Sign Permit application requirements from Planning.
  • Contact Code Enforcement promptly if you receive a notice or see illegal signs.

Help and Support / Resources

  1. [1] City of Costa Mesa municipal code
  2. [2] City of Costa Mesa Planning Division - sign permit guidance
  3. [3] City of Costa Mesa Code Enforcement

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