Tucson, AZ Noise from Specific Sources: Generator Noise (2026)

The City doesn't single out generators in a standalone section, but Tucson City Code Sec. 16-31, Excessive Noise, reaches them through two overlapping rules. ) for property receiving sound in a residential area, 72/65 dB(A) for commercial, and 85/70 dB(A) for industrial. A generator running loud enough to push noise past those limits onto a neighbor's property is a straight violation regardless of intent. Second, subsection (g), Mufflers required on mechanical devices; cutouts prohibited, makes it unlawful to "operate any mechanical device operated by gasoline, or otherwise, without having a muffler, in good working order and in constant operation, to prevent excessive or unusual noise and smoke," and bars any muffler cutout or bypass device.

A portable or standby generator is exactly this kind of gasoline-operated mechanical device, so an unmuffled or modified unit is independently unlawful even if it stays under the dB(A) table. Separately, Tucson's peddler licensing chapter (Sec. 7-29(a)(7)) bars a licensed peddler from operating a generator that violates federal noise or exhaust-muffler regulations, and the Unified Development Code's commercial design standards require delivery/loading equipment including refrigeration generators to be set back at least 300 feet from residential property, or screened by the building, to control truck and generator noise near housing (UDC Sec.

13). Complaints on a residential property go to Tucson Police or code enforcement under Chapter 16; the city manager can grant a written temporary exemption under subsection (d) for up to 30 days where there's no feasible alternative, but this is not automatic and must specify the exact dB(A) level and dates authorized.