St. Johns County limits lot coverage by district under Fla. Stat. 125.01(1)(h): RS-1 caps building coverage at 25 percent, RS-2 at 30 percent, and RS-3 at 35 percent, with a 70 percent impervious surface ratio across the residential districts.
The county's Land Development Code caps both building coverage and impervious surface by residential district. Maximum building coverage runs 25 percent in RS-1, 30 percent in RS-2, and 35 percent in RS-3 and Open Rural single-family, while the maximum impervious surface ratio is 70 percent across those districts. The impervious cap controls total hardscape - roof, driveway, and pavement - and feeds the county's stormwater rules and St. Johns River Water Management District permitting on larger projects. Coastal parcels near Vilano Beach and the Atlantic dune line also fall under Coastal Construction Control Line review. Exceeding a coverage or impervious cap requires a variance from the Planning and Zoning Agency.
The county Growth Management Department enforces coverage and impervious limits; over-covering a lot blocks permits and the certificate of occupancy. Relief comes only through a variance from the St. Johns County Planning and Zoning Agency.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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