Martin County, FL Building Setbacks & Zoning: Structure Height Limits (2026)

A as the vertical distance from the lowest permissible finished floor elevation (set by flood maps, the Health Department, or the building code) along the building's front to the highest point of a flat roof's coping, the deck line of a mansard roof, or the mean height between eaves and ridge on gable, hip and gambrel roofs. Along the oceanfront, the oceanside of a building may count as the front for this measurement. 1 sets the district-by-district ceiling: RS-3, RS-4 and RS-5 single-family lots are capped at 30 feet; RS-6, RS-8, RS-10 and every RM multifamily district climb to 40 feet; R-1 and R-1A allow 30 feet across three stories; General Commercial (GC) tops out at 40 feet and Heavy Industrial (HI) at 60 feet.

B lists narrow exceptions: steeples, spires and belfries on houses of worship may reach 60 feet if unoccupied; roof-mounted equipment such as chimneys, parapet walls under four feet, elevator shafts and AC units may exceed the district limit by up to eight feet if they cover no more than ten percent of the roof; utility poles and approved park lighting are exempt; nonhabitable agricultural, industrial or emergency-service structures may exceed the table limit by 50 percent, up to 60 feet, with Growth Management Director approval; and wireless telecommunication facilities are exempt under Article 4, Division 18. c bars BOZA from ever granting a height above four stories or 40 feet.