Yucaipa, CA Noise Ordinances: Decibel Limits (2026)

Noise in the City of Yucaipa is measured under Development Code Section 87.0905 with a sound level meter meeting ANSI standards, Type 1 or Type 2, using the A-weighted scale in dB(A). The Director of the Community Development Department is the noise control officer. Chapter 9 applies to residential, institutional, commercial and industrial land uses. The table in subsection (b)(1) sets the standard for noise as it affects adjacent properties, by the land use receiving the noise, under the heading Noise Level (Ldn). Residential prints 55 dBA for 7am to 10pm and 55 dBA for 10pm to 7am.

Professional Services prints 55 dBA anytime. Other Commercial Industrial prints 60 dBA anytime and 70 dBA anytime. Subsection (b)(2) then bars anyone from operating a source of sound, or allowing noise on property they own, lease, occupy or control, that exceeds a level measured on any other property, incorporated or unincorporated: the standard for more than 30 cumulative minutes in any hour; the standard plus 5 dBA for more than five cumulative minutes in any hour; the standard plus 10 dBA for more than five cumulative minutes in any hour; the standard plus 15 dBA for more than one cumulative minute in any hour; and the standard plus 20 dBA for any period of time.

If the measured ambient level exceeds any of the first four categories, the allowed exposure rises to that ambient level, and if ambient exceeds the fifth category the maximum rises to the maximum ambient level. If the alleged offense is entirely impact noise or simple tone noise, each level in the table is reduced by 5 dBA. Exempt sources are motor vehicles not under the control of the industrial use, emergency equipment, vehicles and devices, and temporary construction, repair or demolition between 7am and 7pm, except Sundays and Federal holidays.