Osprey

Sarasota County regulates accessory dwelling units on parcels in the unincorporated county through the Sarasota County Unified Development Code (UDC), which addresses 'Accessory Dwelling Units' explicitly. Sarasota is one of the more sophisticated Florida counties on land-use regulation, reflecting its affluent coastal character, its environmentally-sensitive position between Tampa Bay and Charlotte Harbor, and its substantial environmental-overlay footprint. Florida has no mandatory statewide ADU preemption — § 163.31771 Fla. Stat. is permissive only. As of 2026-04-20, Sarasota County permits one ADU per single-family parcel in most residential zoning districts (RSF-1, RSF-2, RSF-3, RSF-4, RSF-5, RSF-6 plus OUE/OUR Open Use rural districts) subject to size caps (typically 900 sqft or 50% of primary, whichever is less), setback conformance, one-story / 15 ft maximum height in most districts, and owner-occupancy. Internal, attached, and detached ADUs are permitted. The county's Coastal Florida Coastal Management Act-equivalent regulations (Florida Coastal Zone Management Program implementation) are heavier here than in most Florida counties because of the extensive barrier-island and mainland-coastal frontage. Hurricane Ian (Sept 2022, Category 4 at landfall just south of Sarasota) delivered substantial wind and minor surge damage; Hurricane Milton (Oct 2024) delivered direct wind and severe surge damage to Siesta Key, Venice, and Nokomis unincorporated fringes. Pending 2026 state legislation (SB 48 / HB 313) would preempt sub-1,000-sqft caps — Sarasota's 900-sqft cap requires upward adjustment.

• Sarasota County Unified Development Code (UDC) — Accessory Dwelling Unit provisions
• Sarasota 2050 Comprehensive Plan — Future Land Use and Environment Elements
• Sarasota County Board of County Commissioners — agenda archive

State-floor overlay: Florida has no mandatory statewide ADU preemption. § 163.31771 Fla. Stat. is permissive only. Pending 2026-session SB 48 / HB 313 would preempt sub-1,000-sqft caps and single-family-zone ADU bans effective December 1, 2026 if enacted. Sarasota's 900-sqft cap requires upward adjustment. Live Local Act applies to commercial / industrial / mixed-use. Florida HOA, condominium, and cooperative statutes (Ch. 720, 718, 719) do NOT preempt association-level restrictions — Sarasota has extensive HOA / condominium jurisdiction on barrier islands (Siesta Key, Longboat Key, Casey Key, Manasota Key) and in master-planned communities (The Meadows, Palmer Ranch, Nokomis's Laurel Oak, Lakewood Ranch southern segment, Wellen Park) where covenants commonly bar ADUs.

Sarasota County administers or co-administers several overlay regimes that materially affect ADU siting on unincorporated parcels: (1) FEMA Special Flood Hazard Areas (SFHA) covering all barrier islands (Siesta Key, Casey Key unincorporated, Manasota Key partial, Longboat Key unincorporated segment), Gulf frontage (Nokomis Beach unincorporated), bayfront (Little Sarasota Bay, Dona Bay, Roberts Bay, Little Sarasota Bay), and extensive riverine floodplain (Myakka River protection zone, Cow Pen Slough, Phillippi Creek, Celery Fields); Sarasota is a CRS Class 5 community giving 25% NFIP discount; post-Ian / Milton FIRM revisions raised BFEs substantially on coastal segments; (2) Florida Building Code Wind Borne Debris Region — all of Sarasota at 150 mph inland / 160-170 mph barrier-island and immediate coastal; (3) Coastal High Hazard Area (CHHA) under Sarasota 2050 Comp Plan, materially tightened post-storms; (4) Florida DEP Coastal Construction Control Line (CCCL) along entire Gulf shoreline; (5) Florida Aquatic Preserves — Lemon Bay Aquatic Preserve, Boca Ciega Bay extension, and multiple smaller preserves; (6) Myakka River Protection Zone — a state-designated Wild and Scenic River with county-administered buffer protections (UDC); (7) Environmental Systems (ES) overlay under Sarasota 2050 Comp Plan protecting Pinelands, Wetlands, Wildlife, and Aquatic resources; (8) Sarasota-Bradenton International Airport (SRQ) AIA affecting specific unincorporated parcels north of the city of Sarasota; (9) Southwest Florida Water Management District (SWFWMD) consumptive-use and stormwater.

• FEMA Special Flood Hazard Areas (SFHA) — NFIP (Sarasota CRS Class 5, post-storm FIRM) — Sarasota administers FEMA NFIP for unincorporated parcels. SFHA extends across all barrier islands, Gulf frontage, bayfront, and inland river / creek corridors. CRS Class 5 gives 25% NFIP premium discount (among best in Florida). Post-Ian / Milton FIRM revisions raised BFEs by 2-5 ft on coastal segments. Requires lowest-floor elevation to BFE + 1 ft freeboard.
• Florida Building Code Wind Borne Debris Region (WBDR) — 150 mph inland / 160-170 mph barrier-island and immediate coastal. Impact-rated glazing or shutters required on all openings. Post-Milton insurer scrutiny further tightened.
• Coastal High Hazard Area (CHHA) — Sarasota 2050 Comp Plan (post-storm tightened) — CHHA covers all barrier islands, Gulf frontage, and bayfront. Post-Ian / Milton, intensification restraint substantially tightened. Many barrier-island parcels at density caps; ADU additions face substantial denial risk.
• Florida Coastal Construction Control Line (CCCL) — FDEP — CCCL along entire Gulf shoreline. Seaward of CCCL requires FDEP permit adding 60-120 days and imposing structural / elevation standards beyond FBC.
• Myakka River Protection Zone — The Myakka River is Florida's only designated Wild and Scenic River. The Myakka River Protection Zone is a county-administered buffer providing water-quality, habitat, and scenic protections. ADUs in the Protection Zone face tightened review including minimum setbacks from the river's mean annual high water, stormwater enhancements, and septic-system alternatives (performance-based treatment). The Protection Zone covers a substantial portion of eastern Sarasota County.
• Environmental Systems (ES) Overlay — Sarasota 2050 Comp Plan — The ES overlay identifies Pinelands, Wetlands, Wildlife, and Aquatic resource zones in the unincorporated county. Construction in ES overlay areas faces biological review, minimum buffer requirements, and possible mitigation obligations. ADUs in ES overlays may require a reduced footprint or relocation within the parcel.
• Florida Aquatic Preserves — Lemon Bay and others — Lemon Bay Aquatic Preserve and multiple smaller preserves cover Sarasota County waters. Waterfront accessory structures require additional FDEP / SWFWMD permitting for any in-water work.
• Sarasota-Bradenton International Airport (SRQ) Airport Influence Area — SRQ AIA covers parcels north and northwest of the city of Sarasota. ADUs within AIA face Part 77 obstruction review and Part 150 noise-attenuation construction expectations in 65+ dB DNL.
• SWFWMD consumptive-use and stormwater — SWFWMD is Sarasota's sole water management district. Standard residential exemption for consumptive-use below ~6,000 gpd. ERP review for additions beyond minor footprint.

Sarasota County Planning & Development Services (PDS) Department is the combined planning / zoning / building / floodplain / environmental permit authority for parcels in the unincorporated county. Unincorporated Sarasota covers approximately 560 square miles (about 80% of the 725 sqmi total land area). Incorporated municipalities are four: Sarasota (county seat), Venice, North Port (largest by population, inland-coastal), and Longboat Key (town, straddles Manatee line). Unincorporated communities include Osprey, Nokomis, Laurel, Siesta Key (mostly unincorporated), Casey Key (unincorporated), Manasota Key (partly in Charlotte County), Vamo, Englewood (mostly in Charlotte, some in Sarasota unincorporated), Fruitville, Bee Ridge, Southside Village unincorporated fringe, and the sprawling east-county Myakka, Old Miakka, and Palmer Ranch unincorporated areas. Sarasota County is a CRS Class 5 community for NFIP — one of the highest ratings in Florida giving 25% premium discount. All of Sarasota County is WBDR at 150-mph-ultimate inland / 160-170-mph-ultimate on barrier islands and immediate coastal. PDS operates a sophisticated one-stop permit intake with dedicated environmental / ecological review staff.