What are SF Noise Ordinance construction hours?
Answered by AskBaily Editorial · Updated
Short answer
SF Police Code Article 29 limits construction noise above 80 dBA at the property line to 7am-8pm Monday-Saturday and prohibits most construction on Sundays and holidays. A variance from DBI's Noise Complaint and Construction Management staff is possible for extended hours but requires advance filing and mitigation (typically $500-$2,500 and 2-4 weeks). Interior work behind closed windows that does not exceed the decibel threshold can sometimes run longer hours.
In detail
San Francisco regulates construction noise under SF Police Code Article 29 (Sections 2900-2918), administered jointly by the Department of Public Health for measurement standards and the Department of Building Inspection for permit-tied enforcement. The headline rule is straightforward: construction equipment that produces more than 80 dBA at 100 feet may operate only between 7:00 AM and 8:00 PM Monday through Friday, with Saturday treated similarly, and is prohibited on Sundays and legal holidays absent a variance.
Section 2907 sets the 80 dBA threshold for powered construction equipment and lists the specific tools subject to it — pile drivers, jackhammers, impact wrenches, pneumatic tools, and similar equipment. Section 2908 covers stationary equipment, including generators and compressors, with a separate decibel cap measured at the property line of the affected use rather than at distance from source. Interior work conducted behind closed windows that does not exceed the property-line decibel threshold can sometimes operate outside the standard hours, but the burden of demonstrating compliance falls on the contractor.
Variances are available under Section 2909. The application is filed with DBI Noise Complaint and Construction Management division and must include: a statement of necessity (typically continuous-pour concrete, transit-line work, or commercial occupancy that requires after-hours work to avoid disrupting business), a noise-mitigation plan, neighborhood notification within a defined radius (commonly 300 feet), and the variance fee (currently 500-2,500 dollars depending on duration and scope). Variance review takes 2-4 weeks in normal queue; expedited review is available at higher cost.
Violations are enforced through citations starting at 500 dollars for a first offense and escalating with each repeat. Three or more verified complaints on a project can trigger a stop-work order under SF Building Code Section 104. Enforcement is complaint-driven, so projects in dense residential zoning (RH-1, RH-2, RH-3, and the eastern neighborhoods plans) draw scrutiny faster than projects in mixed-use commercial corridors.
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