Quiet hours in Bostonia, CA — also called the noise ordinance, nighttime noise rules, or residential quiet time — define the hours during which excessive noise is prohibited.
Bostonia is an unincorporated community, so its noise rules are San Diego County's. In most residential zones the one-hour average sound limit at your property line is 50 dBA daytime (7 a.m.-10 p.m.) and 45 dBA at night (10 p.m.-7 a.m.), so nighttime is the effective quiet period.
Bostonia has no city government; the County of San Diego regulates noise here under the Code of Regulatory Ordinances, Title 3, Division 6, Chapter 4. Section 36.404 sets one-hour average sound-level limits measured at the property line. Low-density residential zones (RS, RD, RR, RMH, and similar) are capped at 50 dBA from 7 a.m. to 10 p.m. and 45 dBA from 10 p.m. to 7 a.m. Denser residential zones allow 55 dBA day / 50 dBA night. Separately, Section 36.414 makes any 'disturbing, excessive or offensive noise' unlawful at any hour, considering time of day, duration, and proximity to sleeping areas. Call the Sheriff for after-hours disturbances.
Noise-ordinance violations are enforced by the Sheriff and County code officers and are generally prosecuted as misdemeanors; officers weigh level, duration, time of day, and proximity to where people sleep under Section 36.414.
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Side-by-side rule comparisons with other cities in San Diego County.
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