State law requires that all cities and counties in California enforce the building codes as mandated by the California Building Standards Commission. The County of Riverside has adopted by ordinance the following model codes as modified by the State of California:

• California Building Code, 2025 edition
• California Residential Code, 2025 edition
• California Mechanical Code, 2025 edition
• California Plumbing Code, 2025 edition
• California Electrical Code, 2025 edition
• California Energy Code, 2025 edition
• California Green Code, 2025 edition