Santee, CA Noise Ordinances: Decibel Limits (2026)

Chapter 5.04's general noise standard, defined in Section 5.04.020, is not a fixed decibel number for most sources; it is whether a sound exceeds average conversational level measured 50 feet from its source, the test used in the general nuisance provision at Section 5.04.040(B)(2) and the catch-all quiet-hours rule at Section 5.04.160. The one place the code prints an actual decibel figure is Section 5.04.090(A)(4), inside the construction-equipment chapter: equipment carrying a manufacturer's noise rating of 85 dBA Lmax or greater can operate at a single site for no more than 10 consecutive workdays before triggering a mandatory notice.

If the job will run longer, the contractor must notify every property owner and resident within 300 feet at least 10 days before construction starts, and the City must approve the notice's content, which has to describe the project, its expected duration and a point of contact for resolving noise complaints. This is a public-notice trigger tied to equipment rating, not a blanket cap that shuts the equipment down once it crosses 85 dBA; the equipment can keep running past the 10 days once the notice is served, subject to the standard 7:00 a.m. to 7:00 p.m. weekday window in Section 5.04.090(A)(1).

Section 5.04.030's most-restrictive-limit rule still applies on top of this notice requirement, so a residential-zone curfew elsewhere in the chapter is not displaced by compliance with the 85 dBA notice provision.