Rialto has no STR-tailored quiet-hours or 'one-strike' permit rule because the city lacks an STR ordinance. All noise complaints — including those at vacation rentals — are enforced under Rialto MC Chapter 9.50 (Noise Control), which prohibits loud, unreasonable, or 'plainly audible' sound (the rhythmic bass component of music alone is sufficient evidence). Chapter 9.50 is administered jointly by Rialto Police and the Department of Development Services Code Enforcement Division. Construction noise has seasonal time windows (Oct 1–Apr 30 vs May 1–Sep 30); residential noise complaints follow the general nuisance standard.
Rialto MC §9.50 defines 'plainly audible' sound to include detection of rhythmic bass vibration, which permits enforcement against amplified music at parties even when broadband decibel readings are inconclusive. Construction is prohibited outside permitted hours, with different windows for fall/winter (Oct 1–Apr 30) and spring/summer (May 1–Sep 30). The chapter does not codify a single decibel limit for all residential noise but instead uses the 'reasonable person' nuisance standard plus the plainly-audible test. STR-permit cities commonly add: (1) 10 p.m.–8 a.m. quiet hours, (2) on-site responsible-party contact requirement, (3) 24/7 hotline, and (4) permit revocation after 2–3 substantiated complaints. None of these STR-tailored controls exist in Rialto; general nuisance + plainly-audible enforcement applies. Cal. Civ. Code §3479 (private nuisance) and §3480 (public nuisance) supplement city authority.
Chapter 9.50 violations are administered by Rialto Police (non-emergency 909-820-2550) and Community Compliance / Code Enforcement (909-820-2689). Repeat or egregious violations can support nuisance abatement under Title 8. No automatic STR-permit revocation exists because no STR permit exists.
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Rialto, CA
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