Construction hours in Mission Viejo, CA — sometimes called construction noise rules or contractor work-hour ordinances — set when contractors can run power tools, hammers, and heavy equipment.
Mission Viejo limits construction activity to 7 AM to 8 PM Monday through Saturday. No construction is permitted on Sundays or federal holidays. Equipment must include factory-installed muffling devices.
MVMC Section 11.04 restricts construction noise to permitted hours: 7 AM to 8 PM Monday through Friday, and 7 AM to 8 PM on Saturdays. No construction activity is allowed on Sundays or federal holidays. All construction equipment must be equipped with factory-installed muffling devices in proper working order. Idling construction equipment must be turned off when not actively in use. These restrictions apply to all construction, renovation, demolition, and grading activities. The city's Community Development Department issues building permits and may impose additional conditions for projects near residences. Many HOAs impose tighter construction windows (commonly 8 AM to 5 PM weekdays only) through CC&Rs. Construction projects requiring extended hours for concrete pours or other time-sensitive work may request special permission from Community Development at (949) 470-3054. Code Enforcement investigates complaints about off-hours construction.
Construction outside permitted hours violates MVMC Title 11. Violations may result in a stop-work order, administrative citations starting at $100, and potential revocation of building permits for repeated offenses.
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