San Jacinto, CA Noise Ordinances: Decibel Limits (2026)
Key Facts
- Single-family limit
- 65 dBA day, 45 dBA from 10:00 p.m. to 7:00 a.m.
- Multifamily and mobile home parks
- 65 dBA day, 50 dBA night
- Commercial property
- 65 dBA day, 60 dBA night
- Interior limit, residential
- 45 dBA day, 40 dBA night
- Duration test
- Standard exceeded for any fifteen (15) minute period
- Enforcing agency
- San Jacinto police department
- Fine for first violation
- Up to $100
Summary
In the City of San Jacinto, California, stationary noise is capped by land use and time of day. Single-family homes get 65 dBA from 7:00 a.m. to 10:00 p.m. and 45 dBA overnight, multifamily properties 65 and 50, commercial property 65 and 60. Any excess measured on another property is unlawful.
A. The following noise standards for maximum allowable noise level due to stationary noise sources shall apply to all development and infrastructure projects, unless otherwise specifically indicated: Type of Land Use Allowed Equivalent Noise Level, dBA Leq2 7:00 a.m. to 10:00 p.m. 10:00 p.m. to 7:00 a.m. All single-family residential properties 65 45 All multifamily residential properties and mobile home parks 65 50 All commercial property 65 60 ... 3. It is unlawful for any person at any location within the incorporated area of the city to create noise, or to allow the creation of any noise on property owned, leased, occupied, or otherwise controlled by such person, which noise causes the noise level, when measured at any location on any other property, to exceed either of the following: a. The noise standard for the applicable zone for any fifteen (15) minute period; b. A maximum instantaneous (single instance) noise level equal to the value of the noise standard plus twenty (20) dBA for any period of time (measured using A-weighted slow response).
Full Breakdown
San Jacinto Municipal Code § 8.40.050 sets the numeric limits for noise from stationary sources. The exterior table is written in equivalent noise level (Leq) in dBA. All single-family residential properties are held to 65 dBA from 7:00 a.m. to 10:00 p.m. and 45 dBA from 10:00 p.m. to 7:00 a.m. All multifamily residential properties and mobile home parks get 65 by day and 50 at night, and all commercial property gets 65 by day and 60 at night. The residential portion of mixed-use properties and all manufacturing, industrial and other uses are held to 70 in both periods.
The code then says how a violation is measured. Noise is unlawful if, measured at any location on another property, it exceeds the applicable standard for any fifteen (15) minute period, or reaches a maximum instantaneous level equal to the standard plus twenty (20) dBA. Where the ambient noise level already exceeds a standard, the ambient level becomes the standard. A boundary between two land uses takes the lower standard, and the mixed-use residential standard applies to residential property within one hundred (100) feet of a commercial property when the noise originates there.
The interior table in subsection B is stricter: single-family, multifamily, mobile home park, commercial and the residential portion of mixed-use are all limited to 45 dBA by day and 40 dBA overnight. Section 8.40.160 fixes the method: exterior readings in a residential area are taken in a private yard, patio, deck or balcony normally used for human activity, with the microphone five feet above finish elevation, and interior readings are taken at least four feet from a wall, ceiling or floor with windows open. Under § 8.40.170 any noise above the § 8.40.040 or § 8.40.050 standards is prima facie evidence of a violation. Schools, day care centers, hospitals, churches, libraries and museums in use are protected by § 8.40.110. The city manager can grant a temporary waiver under § 8.40.200 while a violation is corrected.
Violations & Fines
A negligent or knowing violation of Chapter 8.40 is an infraction under § 8.40.180, punished by the fine in § 1.24.030: up to $100 for a first violation, up to $200 for a second violation of the same ordinance within one year, and up to $500 for each additional violation within one year. Each day is a separate offense. Equipment that produces sound above the standards is declared a public nuisance and can be stopped by court injunction, and the city can recover enforcement costs as a lien and special assessment on the property.
Frequently Asked Questions
What is the nighttime noise limit for a single-family home in San Jacinto?
Where is noise measured when a neighbor complains in San Jacinto?
Does a loud neighbor have to be loud all night to violate the limit?
How much is the fine for violating San Jacinto's noise limits?
Sources & Official References
Other rules in San Jacinto
California rules heatmap·Compare San Jacinto to another location·View the California noise ordinances overview
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