Building Safety in Costa Mesa, CA (2026)
7 verified building safety rules for Costa Mesa, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Lead Paint
Costa Mesa developers building small lot subdivisions must disclose lead-based paint and other construction hazards to future homebuyers before a sales agreement is signed, under Municipal Code Sec. 13-42.3(c). The rule sits within a broader buyer-disclosure list covering insulation, soils, schools, and resale restrictions.
Costa Mesa Small Lot Subdivision Lead Hazard Disclosure
Light RestrictionsCosta Mesa Municipal Code Sec. 13-42.3(c)(2)
Prior to entering into a sales agreement for any property within a small lot subdivision, the developer shall disclose general information regarding the property to the future homebuyers, including, but not limited to, the following: The type, thickness, and R-value of the insulation that has been installed in the home. Any exposed hazards during and after construction (lead-based paint, asbest...
Door Locking Hardware
When an apartment building converts to a residential common interest development in Costa Mesa, Sec. 13-42(h)(3) forces the property to meet security minimum construction standards before recordation, including deadbolt locks on every unit door and a ban on security grilles that block required bedroom egress windows.
Costa Mesa Deadbolt Lock Requirement in Conversions
Some RestrictionsCosta Mesa Municipal Code Sec. 13-42(h)(3)
Security requirements. The following improvements shall be provided in accordance with the provisions of the California Building Code or any successor statute or regulation. Openings into individual dwelling units shall comply with the security provisions. Doors will be equipped with appropriate deadbolt locks. Required egress windows in sleeping rooms shall not be blocked by a security grill o...
Green Building Code
Costa Mesa mandates compliance with the 2025 California Green Building Standards Code, adopted city-wide under Municipal Code Section 5-1 alongside the rest of the construction codes. The building official enforces the code for new and altered buildings, and, as with every adopted code, permit fees for green building compliance review only take effect once the city council approves them by resolution.
Costa Mesa Green Building Standards Code
Some RestrictionsCosta Mesa, CA, Municipal Code Sec. 5-1
For the purpose of prescribing regulations for erecting, construction, enlargement, alteration, repair, improving, removal, conversion, demolition, occupancy, equipment use, height, and area of buildings and structures, the following construction codes subject to the modifications set forth in this chapter, are hereby adopted. … The 2025 California Green Building Standards Code. … Notwithstandi...
Building Permits
Costa Mesa requires a building permit for most construction under Municipal Code Section 5-10, issued by the development services director once an applicant meets all requirements. Section 5-1.1(d) exempts only specific small projects, such as fences under 6 feet, above-ground pools under 5,000 gallons and 18 inches deep, and decks under 200 square feet that stay below 30 inches and are unattached to the dwelling.
Costa Mesa Building Permit Exemptions and Requirements
Some RestrictionsCosta Mesa, CA, Municipal Code Sec. 5-1.1(d)
Section 105.2 is revised by amending exception 2, 9, and adding 14 as follows: 2. Wood, Steel, Vinyl, or Iron fences not over 6 feet in height. Stucco, concrete, and masonry brick fences not over 3 feet high. 9. Prefabricated swimming pools accessory to a Group R-3 occupancy that are less than 18 inches (457.2 mm) deep, do not exceed 5,000 gallons (18,927.059 L) and are installed entirely above...
Electrical Permits
Costa Mesa enforces the California Electrical Code, 2025 Edition, based on the 2023 National Electrical Code, for all electrical work in the city under Municipal Code Section 5-1. The development services director issues electrical permits and enforces the adopted code, and permit fees only take effect once the city council approves them by resolution under Government Code Sections 66016 and 66020.
Costa Mesa Electrical Permit Code Requirements
Some RestrictionsCosta Mesa, CA, Municipal Code Sec. 5-1
The California Electrical Code, 2025 Edition, based on the 2023 National Electrical Code as published by the National Fire Protection Association. … Notwithstanding the provisions of the above-referenced construction codes, all fees for services provided pursuant to the construction codes shall not take effect until a resolution for such fees is adopted by the city council pursuant to Californi...
Plumbing Permits
Costa Mesa requires plumbing work to comply with the California Plumbing Code, 2025 Edition, based on the 2024 Uniform Plumbing Code, adopted city-wide under Municipal Code Section 5-1. The development services director issues plumbing permits and enforces the code, and permit fees only take effect once the city council adopts them by resolution under Government Code Sections 66016 and 66020.
Costa Mesa Plumbing Permit Code Requirements
Some RestrictionsCosta Mesa, CA, Municipal Code Sec. 5-1
The California Plumbing Code, 2025 Edition, based on the 2024 Uniform Plumbing Code as published by the International Association of Plumbing and Mechanical Officials. … Notwithstanding the provisions of the above-referenced construction codes, all fees for services provided pursuant to the construction codes shall not take effect until a resolution for such fees is adopted by the city council ...
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.
Costa Mesa Residential Building Records Inspection
Some RestrictionsCosta Mesa, CA, Municipal Code Sec. 5-122
If the owner consents, the city shall cause a physical inspection of the residential building and shall include in the report of residential building records evidence of building permit, housing or zoning code violations observed during the inspection, the correction of those violations as determined by any reinspection, and any failure or refusal of owner to permit a re-inspection and/or the c...
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