Construction hours in Rialto, CA — sometimes called construction noise rules or contractor work-hour ordinances — set when contractors can run power tools, hammers, and heavy equipment.
Rialto Municipal Code Section 9.50.070 sets seasonal construction hours: October-April weekdays 7:00 a.m.-5:30 p.m., May-September weekdays 6:00 a.m.-7:00 p.m., Saturdays 8:00 a.m.-5:00 p.m. year-round, and no construction at all on Sundays or state holidays.
Section 9.50.070 prohibits any work of construction, erection, alteration, repair, addition, movement, demolition, or improvement to a building or structure outside the permitted hours. From October 1 through April 30, work is allowed Monday-Friday 7:00 a.m. to 5:30 p.m.; from May 1 through September 30, Monday-Friday 6:00 a.m. to 7:00 p.m. Saturday hours are 8:00 a.m. to 5:00 p.m. in both seasons, with no permissible hours on Sundays or state holidays. Exceptions cover emergency repairs and work under a written early work permit issued by the city manager for hot or inclement weather or other compelling circumstances (Section 9.50.070(D)). The city's 2017 noise assessment notes the code sets no construction decibel limits.
Working outside permitted hours is an infraction under Section 9.50.110, with fines from $250 for a first conviction to $1,000 for a fourth within twelve months (Section 9.50.130), and may be abated as a public nuisance under Section 9.50.100.
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