Costa Mesa, CA Local Ordinances Guide

Costa Mesa is a mid-sized city in Orange County, California, with about 112000 residents. Like most cities its size, it has a set of local rules that may differ significantly from neighboring municipalities. Here is an overview of 134 ordinances across 40 categories that affect daily life in Costa Mesa.

Outdoor Cooking

Smoker Rules: Costa Mesa bans open fires and barbecues in city parks except at spots designated or permitted by the public services or administrative services director. Grilling at an undesignated spot counts as disorderly conduct, drawing ejection from the park and possible loss of park access after repeat violations..

Also covered: BBQ & Propane Rules (limited). See the full outdoor cooking guide for Costa Mesa for details.

Public Conduct

Public Urination: Costa Mesa Municipal Code section 11-4 makes it unlawful to urinate, defecate or dispose of human waste on private property visible to the public, or on any public street, sidewalk, alley, park, parkway or parking lot, unless it happens inside a proper toilet in a restroom or enclosure. A genuine illness or physical infirmity is a defense; being drunk or high is explicitly not..

Also covered: Skateboarding Rules (moderate), Jaywalking (limited), Loud Party Ordinance (moderate). See the full public conduct guide for Costa Mesa for details.

Animal Ordinances

Exotic Pets: Costa Mesa follows California Department of Fish and Wildlife regulations prohibiting most exotic animals as pets. Ferrets, hedgehogs, and certain reptiles are restricted or banned under state law.

Also covered: Pet Limits (moderate), Dog Leash Laws (moderate), Beekeeping (restrictive). See the full animal ordinances guide for Costa Mesa for details.

Mobility & Curb Rules

Bike Lane Rules: Costa Mesa bars motor vehicles from driving in marked bicycle lanes except to park, enter or exit the roadway, or turn within 200 feet of an intersection. Cyclists moving slower than surrounding traffic must ride within the bike lane, leaving it only to pass, turn left, or dodge hazards..

Also covered: E-Bike Classes (limited). See the full mobility & curb rules guide for Costa Mesa for details.

Parking Rules

RV & Boat Parking: Costa Mesa treats outdoor RV, boat and trailer storage in residential zones as unlawful by default under Municipal Code Section 20-8 and Table 20-8(c), unless the vehicle sits fully enclosed inside a building, on a driveway connecting to a garage, on an alley-accessible parking pad, or on a paved area screened by a 6-foot solid fence outside the street setback..

Also covered: Curb Color Rules (moderate), Commercial & Oversized Vehicles (moderate), Overnight Parking (restrictive). See the full parking rules guide for Costa Mesa for details.

Filming & Production

Street Closures: Filming that blocks or slows Costa Mesa traffic triggers mandatory traffic-control conditions under Section 9-478(d): the permittee must hire city-designated law enforcement, from the Orange County Sheriff, CHP or city police, post Caltrans-standard warning signs, and follow city-set lane restrictions, with at least five working days' advance notice required for review..

Also covered: Student Filming (limited), Location Permits (moderate). See the full filming & production guide for Costa Mesa for details.

Cannabis Regulations

Dispensary Zoning: Costa Mesa bans cannabis manufacturing, distribution, testing and research citywide except in a narrow 'Green Zone' of Manufacturing Park and Planned Development Industrial land north of South Coast Drive and west of Harbor Boulevard, and confines cannabis retail, storefront or delivery-only, to commercial zones, all under a conditional use permit and capped at 35 storefront permits citywide..

Also covered: Buffer Zones (restrictive). See the full cannabis regulations guide for Costa Mesa for details.

Business Licensing & Operations

Auto Repair on Residential Property: Costa Mesa bars auto repair as a home occupation outright: no garage may be used for the business and no mechanized equipment beyond normal household tools is allowed, so a residential mechanic operation cannot get a home occupation permit under Municipal Code Article 6..

Also covered: Tobacco Retail License (moderate), Tattoo & Body Modification (moderate), Towing Companies (restrictive). See the full business licensing & operations guide for Costa Mesa for details.

Homelessness & Encampment Rules

Encampment Sanitation: Costa Mesa bans camping on any street, alley, public parking lot, public area or park under section 11-304, and separately bans storing personal property in any public area under section 11-306 unless the public services director approves it in writing. Unauthorized property left in public areas is impounded and, if unclaimed for 90 days, sold at auction or given to the finder..

Trash & Recycling

Illegal Dumping: Dumping solid, hazardous or infectious waste on private or public property in Costa Mesa without the owner's consent, or on any street, alley or sidewalk, is unlawful under Municipal Code § 8-83(a). The ordinance separately bars dumping within 1,000 feet of a public highway or 500 feet of any home without a zoning use permit, and forbids burning, scavenging or burying waste anywhere in the city..

Also covered: Collection Schedule (moderate), Recycling Rules (moderate), Recycling Requirements (moderate). See the full trash & recycling guide for Costa Mesa for details.

Public Health Rules

Syringe Disposal: Costa Mesa bans every clean needle and syringe exchange program citywide. Municipal Code Article 23 (§§ 13-200.200 to 13-200.202) prohibits operating any such program on public or private property, including streets, alleys, sidewalks and rights-of-way, in every zoning district, with violations treated as a public nuisance..

Also covered: Rodent Control (moderate). See the full public health rules guide for Costa Mesa for details.

Food Trucks & Mobile Vendors

Sidewalk & Mobile Vending: Costa Mesa requires anyone selling food or merchandise from a pushcart or other non-motorized sidewalk vending receptacle to get a permit from the director of finance under Section 9-191.2. Receptacles are capped at four feet in every dimension, vendors must stay off residential sidewalks between sunset and 8 a.m., and stationary vendors can't operate on residential sidewalks at all..

Also covered: Food Truck Permits (moderate), Vending Zones (moderate). See the full food trucks & mobile vendors guide for Costa Mesa for details.

Fire Regulations

Fireworks: Costa Mesa allows 'safe and sane' fireworks sales only by nonprofit youth organizations and schools holding a Section 9-180 permit from the director of finance, and only between June 30 and 9:00 p.m. on July 4.

Also covered: Outdoor Burning (restrictive), Fire Pits & Backyard Fires (moderate), Smoke Detectors (moderate). See the full fire regulations guide for Costa Mesa for details.

Soliciting & Door-to-Door

Solicitor Permits: Anyone going house-to-house in Costa Mesa to sell goods or take orders for future delivery must first get an identification card from the police chief under Section 9-132. The chief can issue it without a council hearing unless neighbors object, and established local route vendors and charitable or religious solicitors are exempt from the requirement..

Local Taxes & Fees

Business Tax Classification: Every Costa Mesa business license must state the business's tax classification and the code section that sets its tax, per Section 9-35. Most businesses pay on a sliding gross-receipts scale under Section 9-25, while contractors, vehicle-for-hire operators and show promoters fall into separate flat-rate classes set out in Sections 9-26 through 9-28..

Special Events & Permits

Parklets: Parklets and other outdoor dining set up in Costa Mesa's public right-of-way trace back to Urgency Ordinance 2020-15's Temporary Use Permits, which Table 13-47(b) Note 1 allows to keep operating only with staff approval, applicable fees, and compliance with Building, Fire, and aesthetic standards..

Also covered: Parade Permits (moderate), Street Fair Rules (moderate), Sidewalk Dining & Cafés (moderate). See the full special events & permits guide for Costa Mesa for details.

Noise Ordinances

Amplified Music & Outdoor Sound: Costa Mesa limits amplified sound equipment mounted on advertising sound trucks under Section 9-140: the truck must be moving at least 10 mph while the amplifier runs, sound is banned within 100 yards of hospitals, schools, churches and city hall, and no permit can authorize operation between 1:00 p.m. and 3:00 p.m.

Also covered: Leaf Blower Rules (moderate), Barking Dogs (moderate), Construction Hours (moderate). See the full noise ordinances guide for Costa Mesa for details.

Building Setbacks & Zoning

Lot Coverage Limits: Costa Mesa's residential development table caps rear yard building coverage and sets a citywide open space floor under Municipal Code § 13-32. Every residential lot must keep 40% of its total area as open space, and in the rear yard, main buildings may cover no more than 25% and accessory buildings no more than 50% of the calculated rear yard area..

Also covered: Structure Height Limits (moderate), Setback Rules (moderate). See the full building setbacks & zoning guide for Costa Mesa for details.

Accessory Structures

ADU Rental Restrictions: Costa Mesa bars renting an accessory dwelling unit for less than 31 days under Municipal Code § 13-35(b)(8), and the same 31-day floor applies to Junior ADUs under § 13-35(c)(4). The rule closes off short-term vacation rental use of both ADU types citywide, regardless of zone..

Also covered: Shed & Carport Rules (moderate), Garage Conversions (moderate), ADU Rules (moderate). See the full accessory structures guide for Costa Mesa for details.

Outdoor Lighting

Light Trespass & Shielding: A Costa Mesa restaurant or bar within 200 feet of a residential zone must shield or aim all exterior lighting away from homes under Municipal Code Sec. 13-49(a), one of several buffer standards that also cover noise, trash screening, and seating orientation for that 200-foot band..

Sidewalk & Pedestrian Rules

Encroachment Permits: Any private improvement placed in, over or under a Costa Mesa public right-of-way without a current encroachment permit is a declared public nuisance subject to summary abatement. The public services director reviews applications, can grant, deny or condition them, and can order removal within 30 days when the city needs the right-of-way back..

Also covered: Obstruction Rules (moderate). See the full sidewalk & pedestrian rules guide for Costa Mesa for details.

Noise from Specific Sources

Bar & Nightclub Noise: Costa Mesa treats late-night alcohol sales and live entertainment within 200 feet of a residential zone as a conditional use, and any bar or nightclub in that buffer zone must screen outdoor PA systems, seating and trash areas, and shut down customer service between 11:00 p.m. and 6:00 a.m.

Tree Protection

Parkway Planting: No one may plant, replace or remove a tree in a Costa Mesa median, parkway or tree easement without a public services department permit. New street trees must follow the city's street tree master plan, and plantings must clear set distances from hydrants, stop signs and driveways..

Also covered: Heritage & Protected Trees (limited). See the full tree protection guide for Costa Mesa for details.

Landscaping Rules

Tree Removal & Heritage Trees: Costa Mesa bans removing or destroying any tree in a required landscaped area without prior city approval. Property owners must submit site plans showing existing and replacement trees, plus a written request and justification, to the planning division.

Also covered: Water Restrictions (moderate), Native Plants (limited), Artificial Turf (moderate). See the full landscaping rules guide for Costa Mesa for details.

Zoning Overlays & Bonuses

Density Bonus Law: Costa Mesa implements California's density bonus law through sections 13-152 through 13-154, letting developers of affordable, senior, or child-care housing projects request extra units and incentives. A qualifying project needs at least five units and must provide income-restricted housing, donated land, or a child care facility under State Government Code section 65915..

Home Business

Signage Rules: 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..

Also covered: Zoning & Home Occupation Permits (restrictive), Home Daycare (moderate), Customer Traffic Restrictions (moderate). See the full home business guide for Costa Mesa for details.

Fence Regulations

Material Restrictions: Costa Mesa bans barbed wire, razor wire and electrified fencing in setbacks facing a street or near residential property, and bans electrified fencing citywide in every zone. Chain link fencing visible from a public street is prohibited in residential zones, and owners must remove it once qualifying permits reach $30,000..

Also covered: Fence Permit Requirements (moderate), Height Limits (moderate), Neighbor Fence Rules (moderate). See the full fence regulations guide for Costa Mesa for details.

Rental Property Rules

Repairs & Habitability: When Costa Mesa's development services department declares a rented dwelling a public nuisance and abates it for unsafe, hazardous, or illegal habitable-use conditions, Municipal Code Section 20-29 requires the property owner to pay the displaced tenant relocation assistance. A tenant current on rent who did not cause the condition receives two months' rent plus a refund of the security deposit, or another arrangement both sides agree to in writing..

Building Safety

Building Inspections: Before selling a residential building with four or more units, Costa Mesa owners must obtain a Report of Residential Building Records under Municipal Code Section 5-118, and if the owner consents, Section 5-122 requires the city to physically inspect the building and record any building, housing, or zoning code violations found in that report..

Also covered: Plumbing Permits (moderate), Electrical Permits (moderate), Building Permits (moderate). See the full building safety guide for Costa Mesa for details.

Property Maintenance

Property Blight: Costa Mesa declares a broad list of property conditions a public nuisance under Municipal Code Section 20-12, from unsafe or fire-hazard structures and structural defects to abandoned, boarded-up, or partially built structures. The director can order abatement, and Section 20-13 authorizes a civil penalty of up to $1,000 imposed daily after the notice-to-abate deadline passes until the violation is corrected..

Also covered: Vacant Lot Maintenance (moderate). See the full property maintenance guide for Costa Mesa for details.

Code Violation Reporting

Common Violations: Costa Mesa's Section 20-12 lists dozens of conditions the city treats as a public nuisance, from litter and weeds visible from the street to inoperative vehicles, RVs used as housing, unpermitted canopies, rooftop storage and bed bug or rodent infestations. Any one finding can trigger a notice to abate and civil fines..

Also covered: How to Report (moderate). See the full code violation reporting guide for Costa Mesa for details.

Swimming Pools & Spas

Pool Permits: Costa Mesa applies California's Swimming Pool Safety Act (Health & Safety Code 115920-115929) and the 2022 California Residential Code through CMMC Title 5. Any above-ground pool capable of holding more than 18 inches of water requires a building permit, an isolation barrier at least 60 inches tall, and at least two of seven approved drowning-prevention features..

Also covered: Fencing & Safety Requirements (moderate). See the full swimming pools & spas guide for Costa Mesa for details.

Solar Energy

Expedited Solar Permitting: Costa Mesa must issue a small residential rooftop solar permit within three business days once an application matches the city's approved checklist and standard plan, under Municipal Code § 5-143. Only one inspection is required, and it must be scheduled within two business days of the homeowner's request..

Also covered: Panel Permits (moderate), HOA Restrictions (moderate). See the full solar energy guide for Costa Mesa for details.

Gambling & Gaming

Card Room Licensing: Costa Mesa Municipal Code section 11-31 bans operating any gaming table, gaming establishment or room for playing cards, dice or other games of chance for money, with the only carve-out running through Title 9, Chapter II, Article 21, which the code itself limits to charity bingo. No ordinance authorizes a card room in Costa Mesa..

Environmental Rules

Stormwater Management: Costa Mesa bans any illicit connection to the storm drain system and any prohibited discharge of pollutants into it, gutters, or the Pacific Ocean under Municipal Code § 8-31. New development and significant redevelopment must also follow the county's Drainage Area Management Plan before the city will issue a grading, building, or plumbing permit..

Also covered: Flood Zones (restrictive), Flood Elevation Requirements (moderate), Erosion Control (moderate). See the full environmental rules guide for Costa Mesa for details.

Sign Regulations

Digital Billboards: Costa Mesa prohibits electronic changeable copy signs, the digital-display technology used for LED billboards and reader boards, in every zone in the city. Section 13-112(l) carves out only two exceptions: theater marquees and electronic time/temperature displays.

Also covered: Window Signs (moderate), Political Signs (moderate). See the full sign regulations guide for Costa Mesa for details.

Hotels & Lodging

Transient Occupancy Tax: Costa Mesa charges an 8% transient occupancy tax on every hotel, motel and rental-unit stay of 30 consecutive days or less, collected by the operator and remitted to the finance department under Municipal Code Chapter IV. Operators must register within 30 days of opening and file quarterly returns..

Curfew Laws

Juvenile Curfew: Costa Mesa's juvenile curfew runs from 10:00 p.m. to 6:00 a.m.

Also covered: Park Curfew (moderate). See the full curfew laws guide for Costa Mesa for details.

Data Centers & Crypto Mining

Data Center Zoning & Siting: Costa Mesa has no data-center use in its Land Use Matrix. Server facilities locate in the MG and MP industrial zones, permitted by right when the development services director finds similarity to a listed industrial use, and otherwise by conditional use permit..

Also covered: Data Center Noise Limits (moderate). See the full data centers & crypto mining guide for Costa Mesa for details.

Historic Preservation

Historic-Cultural Monuments: Costa Mesa designates local landmarks and historic districts on its Register of Historic Places, and once listed, a cultural resource cannot be altered, restored, relocated, or demolished without a certificate of appropriateness from the planning commission under Municipal Code Section 13-200.10..

What to Do With This Information

If you are moving to Costa Mesa, buying a home, or starting a project, use this as a starting point. Each category links to detailed pages with the full text, penalties, and FAQs. Verify anything time-sensitive with Costa Mesa's city hall or code enforcement office.