Miami-Dade County, FL Noise Ordinances: Aircraft Noise (2026)
Key Facts
- 75 DNL Zone
- New homes and schools banned
- 65-74 DNL Zone
- 25 dB noise reduction required
- Coverage
- Unincorporated county plus 34 municipalities
- Enforcement
- RER Dept and Miami-Dade Aviation Dept
- Ordinance
- Ord. No. 19-112, adopted Nov. 2019
Summary
Property near Miami-Dade's airports falls into DNL noise contour zones: the 75 DNL zone bars new homes and schools outright, while the 65-74 DNL zone requires new construction to cut indoor noise by at least 25 decibels.
(2)Noise compatibility restriction zones:(a)75 DNL Zone...New residential construction and educational facilities, excluding aviation-related schools, are prohibited within this zone.(b)65-to-74 DNL Zone...All new uses shall incorporate at least a 25 decibel outdoor-to-indoor Noise Level Reduction (NLR) into design and construction.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 135).
Full Breakdown
Miami-Dade's Airport Zoning article (Ch. 33, Art. XXXVII) maps noise compatibility restriction zones around Miami International, Miami Executive, Opa-locka Executive and Homestead General Aviation airports. In the 75 DNL zone, the loudest contour, new residential construction and educational facilities (other than aviation schools) are prohibited outright. In the 65-to-74 DNL zone, new development must build in at least 25 decibels of outdoor-to-indoor noise reduction. The rules apply as minimum standards in both unincorporated Miami-Dade and the 34 municipalities; the County's Regulatory and Economic Resources Department and Miami-Dade Aviation Department enforce in unincorporated areas, municipalities enforce within their own boundaries, and either the County or municipal officials review development permits under Section 33-334.
Violations & Fines
Building homes or schools in the 75 DNL zone without an approved variance, or skipping the required 25-decibel sound insulation in the 65-74 DNL zone, voids the development permit and can trigger enforcement under Chapter 8CC.
Frequently Asked Questions
Can I build a house inside Miami-Dade's 75 DNL airport noise zone?
Does this noise rule apply inside cities like Miami or Hialeah?
Sources & Official References
Other rules in Miami-Dade County
Florida rules heatmap·Compare Miami-Dade County to another location·View the Florida noise ordinances overview
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