Sec. 20-102(f) sets maximum permissible sound levels by receiving land-use category in Table 1, measured at the property boundary. Residential limits are reported at about 60 dBA by day and 55 dBA at night.
The parish enforces measurable decibel limits under Section 20-102(f), "Maximum permissible sound limits." It is unlawful to operate any noise source in a way that exceeds the Table 1 limits for the receiving land-use category during any measurement period, measured at or beyond the property boundary (for multifamily dwellings, within the adjacent intra-building dwelling). Levels are measured on the A-weighted (dBA) scale under ANSI standards. Reported residential values are about 60 dBA for 7:00 a.m.–9:59 p.m. and 55 dBA for 10:00 p.m.–6:59 a.m., with higher limits for commercial and industrial categories. This governs the unincorporated parish, including Metairie.
Exceeding the Table 1 dBA limits at the property line is a Sec. 20-102 violation enforced by parish code compliance with escalating fines.
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See how Jefferson Parish's decibel limits rules stack up against other locations.
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