Sarasota County, FL Noise Ordinances: Aircraft Noise (2026)

Sarasota County Code § 22-36 adopts by reference the Airport Noise Contour Map prepared by the Sarasota-Manatee Airport Authority ('SRQ Part 150 Implementation') and layers sound-isolation duties onto any new or substantially improved building inside the mapped 65, 70, or 75 day-night average sound level (Ldn) contours. The ordinance sets three classes of required noise reduction: a 35 Ldn reduction limits interior noise to 45 Ldn for buildings inside the 75 Ldn contour; a 30 Ldn reduction caps interior noise at 50 Ldn within the 75 Ldn contour and 45 Ldn between the 70 and 75 Ldn lines; and a 25 Ldn reduction caps interior noise at 50 Ldn between the 70 and 75 Ldn contours and 45 Ldn between the 65 and 70 Ldn contours.

Table 1 of the ordinance assigns those classes by occupancy type; one- and two-family dwellings and other Group R uses need a 35 Ldn reduction inside the 75 Ldn contour, 30 Ldn between 70 and 75 Ldn, and 25 Ldn between 65 and 70 Ldn. Compliance can be shown either by a licensed architect or engineer certifying the interior noise targets will be met, or by using wall, door, and window assemblies that hit the Sound Transmission Class ratings in Table 2, which reach as high as STC 55 for exterior walls with 26 to 70 percent openings at the top reduction class.

The rule applies whenever repair or improvement work costs 50 percent or more of a building's market value, but the Building Official may exempt replacement manufactured homes and park trailers in parks that existed before January 1, 2001, if the owner files a notarized affidavit that the unit cannot practicably be modified to comply.