Torrance Decibel Limits Rules (2026): What You Need to Know

The Torrance noise ordinance establishes region-based decibel standards tailored to the city's unique mix of residential neighborhoods and industrial areas. Region 1 encompasses the areas surrounding Torrance's oil refineries and petroleum operations, where ambient noise levels are inherently higher. In these areas, noise from stationary sources may not exceed 70 dBA during daytime hours or 65 dBA at night. Standard residential zones are held to lower limits, with nighttime levels around 55 dBA.

The 5-decibel rule is central to enforcement: any noise that exceeds the ambient noise level at the property line of any residential land (or within any adjoining apartment in a condominium or apartment complex) by more than 5 decibels is deemed prima facie evidence of a violation. This standard applies to machinery, equipment, pumps, fans, air conditioning, and similar mechanical devices.

For the Torrance Municipal Airport, aircraft may not exceed a single event noise exposure level (SENEL) of 88 dBA or a maximum sound level of 82 dBA measured at ground level outside the extended airport boundaries. The Community Development Director may revoke an exemption for a particular project if noise exceeds 50 dB at the property line of a residential property beyond the 300-foot buffer.