Martin County, FL Noise Ordinances: Decibel Limits (2026)
Key Facts
- Residential daytime cap
- 60 dB(A), 7 a.m.–9 p.m.
- Residential nighttime cap
- 55 dB(A), 9 p.m.–7 a.m.
- Institutional nighttime cap
- 50 dB(A)
- Industrial/agricultural daytime cap
- 70 dB(A)
- Measured at
- receiving property's boundary line
Summary
Martin County caps sound at a property line by land use and time of day, from 50 dB(A) at night near institutions up to 70 dB(A) daytime in industrial and agricultural areas.
Maximum permissible sound levels by receiving land use are set forth in table 1. It shall be unlawful to operate or cause to be operated any source of sound or to project a sound or noise across a real property boundary in such a manner as to create a sound level which exceeds the limits set forth for the receiving land use designation in table 1... Residential ... 7:00 a.m.—9:00 p.m. ... 60 dB(A) ... 9:00 p.m.—7:00 a.m. ... 55 dB(A)
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 62 | Land Development Regulations: Supplement 62).
Full Breakdown
Under Sec. 67.306, it's unlawful to project sound across a property line above the limit set for the receiving land use. Institutional land (schools, parks, public conservation) caps at 55 dB(A) from 7:00 a.m. to 9:00 p.m. and 50 dB(A) overnight. Residential caps at 60/55 dB(A) day/night. Commercial allows 65/60 dB(A), while industrial and agricultural allow 70/65 dB(A). Residential developments inside an agricultural designation still get the residential thresholds, and at a boundary between two use districts, the stricter limit controls.
Violations & Fines
Exceeding the table 1 limit for the receiving land use, measured at or within its property line, violates Sec. 67.306; short or intermittent sources get corrections under table 2 (up to +15 dB(A) for under a minute, or -5 dB(A) for pure-tone/impulsive sources).
Frequently Asked Questions
Where is the limit measured?
Does a boundary between two zones get the higher limit?
Sources & Official References
Other rules in Martin County
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