City of San Mateo Law Library
City of San Mateo Municipal Code.

23.06.060 Hours of Work

No work regulated by this code shall be permitted between the hours of 7:00 p.m. and 7:00 a.m., Monday through Friday, nor prior to 9:00 a.m. or after 5:00 p.m. on Saturday, nor prior to 12:00 noon or after 4:00 p.m. on Sundays and holidays. These hours do not apply to construction work that takes place inside a completely enclosed building and does not exceed the exterior ambient noise level as measured ten feet from the exterior property lines.