ADU Pass
Sarasota County
ADU Pass helps homeowners in Sarasota County, Florida navigate the permit paperwork for building an accessory dwelling unit. We cover 7 cities and 24 ZIP codes in this county.
Map
County ADU details
County ADU ordinance
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.
Code citations:
- 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.
Adopting body: Sarasota County Board of County Commissioners
County permitting (unincorporated parcels)
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.
Process overview: ADU approval in unincorporated Sarasota County is a combined zoning / building / floodplain / environmental review. Typical sequence: (a) confirm parcel zoning, FLU (2050 Comp Plan category), CHHA, FIRM, Environmental Systems overlay via Sarasota Property Appraiser and PDS GIS; (b) submit Building Permit through Access Sarasota with site plan, floor plans, elevations, FBC compliance (150-170 mph ultimate per location), flood compliance for SFHA, environmental-buffer compliance for ES overlay parcels, DOH septic for on-site septic (many east Sarasota parcels), and SWFWMD consumptive-use / ERP confirmation; (c) zoning review; (d) building plan review; (e) Sarasota County Fire / North Port Fire / Englewood Area Fire reviews; (f) environmental review for ES overlay parcels; (g) permit issuance, construction, inspections, CO. Sarasota targets 20-30 business days for residential review; actuals 40-70 business days post-Ian / Milton on barrier-island and coastal parcels.
Impact fees: Sarasota County imposes transportation (mobility), parks, library, public safety, and Sarasota County Schools impact fees. For a typical ADU in unincorporated Sarasota County, total impact fees run approximately $14,000-$20,000 (as of 2026-04-20) — among the higher Florida county fee schedules, reflecting affluent-coastal housing-market dynamics. Water/sewer connection fees through Sarasota County Utilities add $4,500-$8,500 in served areas. No ADU-specific impact-fee exemption exists. The county has discussed workforce-housing fee reductions on multiple occasions but no general ADU impact-fee exemption has been adopted. (schedule)
County assessor
Sarasota County Property Appraiser maintains parcel-level assessment records for all real property in Sarasota County including parcels within the four incorporated municipalities. Florida Save Our Homes (§ 193.155) / 10% non-homestead cap apply. ADU treated as new construction added to just value at completion-year fair market value; primary's SOH base not reset. Sarasota County's strong 2021-2024 appreciation (barrier islands, Palmer Ranch, Lakewood Ranch southern segment, Wellen Park, Nokomis waterfront) drove substantial SOH differentials on long-held homesteaded parcels. Post-Ian (2022) and Milton (2024), Property Appraiser issued extensive § 197.319 prorated tax refunds on destroyed coastal parcels; tax-roll adjustments continued through 2025. The Property Appraiser administers Agricultural Classification (Greenbelt, § 193.461) on qualifying east-county rural parcels including the Myakka / Old Miakka ranch country.
Assessment policy: New-construction additions occur at annual roll-over following CO. Field-inspection cycle typically 4-8 months. For a typical 600-900 sqft ADU in unincorporated Sarasota County, observed just-value additions range from $140,000 to $260,000 (reflecting affluent-coastal construction cost environment, higher than inland Florida counties; barrier-island ADUs at the top end), yielding a supplemental annual property-tax increase of approximately $2,500-$4,800 at the aggregate millage rate of roughly 1.7-1.9%. ADUs rented short-term (barrier-island and Gulf-proximate parcels are high-value STR assets) owe Tourist Development Tax (Sarasota TDT is 6%) in addition to regular property tax.
County overlays (9)
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.
Known county issues (5)
- other — Hurricane Milton (Oct 2024) made direct landfall on Siesta Key as a Category 3 with catastrophic wind and surge damage. Substantial-damage determinations and rebuild-to-elevated-standard requirements dominate the barrier-island permit pipeline through 2025-2026 and beyond. Citizens Property Insurance premiums for coastal Sarasota ADUs run $5,000-$10,000/year for a 600-900 sqft structure — among the highest in Florida. Owners considering ADUs in CHHA / barrier-island parcels should budget insurance as a first-order ADU economics input, and should expect elongated permit review and rebuild-environment permit scrutiny.
- other — Post-Ian / Milton, Sarasota tightened CHHA policies. Many barrier-island parcels are at the underlying zoning density cap; ADU additions face substantial denial risk under the Sarasota 2050 Comp Plan intensification restraint. Owners in these areas should obtain a pre-application CHHA-consistency opinion before committing to design.
- policy-review — Sarasota's 900-sqft cap requires upward adjustment if SB 48 / HB 313 enacts December 1, 2026. The owner-occupancy requirement would be preempted. The barrier-island CHHA intensification restraint is a separate policy likely to survive preemption since it is not a direct ADU-ban but an intensification restraint.
- other — Florida HOA and condominium statutes (Ch. 720, 718) do NOT preempt association restrictions. Siesta Key, Casey Key, Manasota Key, and barrier-island communities have extensive HOA / condominium jurisdiction. Master-planned communities (The Meadows, Palmer Ranch, Laurel Oak, Lakewood Ranch southern segment, Wellen Park) commonly bar ADUs. Non-HOA / non-condo parcels (older inland unincorporated neighborhoods, eastern rural Myakka / Old Miakka) are the practical ADU landscape.
- other — Sarasota's Myakka River Protection Zone and the Sarasota 2050 Environmental Systems overlay impose biological review, buffer requirements, and stormwater / septic enhancements. Performance-based treatment septic systems (required in some ES areas) add $15,000-$30,000 to ADU cost. Owners in eastern Sarasota County should obtain pre-application ES-overlay and Myakka-zone opinions before committing to design.
Florida state — ADU law and programs
State ADU law
Florida does NOT currently have a statewide ADU preemption law in effect. Florida Statutes § 163.31771 (enacted 2004, last amended 2020) is permissive — it authorizes local governments to adopt ADU ordinances but does not require them to. ADU rules are therefore set municipality-by-municipality: Miami-Dade, Orlando, St. Petersburg, Tampa, and a growing set of Florida cities have their own ordinances; many smaller counties and cities still prohibit or restrict ADUs by default. A preemption bill (SB 48 / HB 313) is pending in the 2026 legislative session and is likely to pass given that its 2025 predecessor cleared the Senate 37-0 and House 97-10 before dying on a procedural amendment dispute.
- Florida Statutes § 163.31771 — Accessory dwelling units — Permissive (not mandatory) statute. Defines an ADU as 'an ancillary or secondary living unit, that has a separate kitchen, bathroom, and sleeping area, existing either within the same structure, or on the same lot, as the primary dwelling unit.' Authorizes — but does not require — local governments to adopt ordinances allowing ADUs in single-family residential zones. Contains no size caps, no owner-occupancy rules, no HOA preemption. All substantive rulemaking is local.
State financing programs
Florida Housing Finance Corporation (FHFC) does not operate an ADU-specific state loan or grant program. FHFC's primary affordable-housing lever at the ADU tier is the State Housing Initiatives Partnership (SHIP), which distributes state documentary-stamp-tax revenue to all 67 counties and 52 entitlement cities for locally-administered housing programs — some of which may fund ADU construction at the local level (notably Orange County's Affordable ADU Loan Program, run through the Orange County Housing Finance Trust). FHFC's FL Assist down-payment programs and HFA Preferred / HFA Advantage conventional loans apply to ADU-eligible primary residences but do not single out ADUs. Proposed CS/SB 1440 would create a state property-tax exemption of up to 100% of assessed value for an ADU rented at affordable rates.
State housing programs
Florida does not currently operate a statewide pre-approved ADU plan catalog (unlike California or Washington). State-level ADU implementation is driven by (a) the permissive § 163.31771 which lets willing jurisdictions adopt ordinances, (b) SHIP pass-through funding to local ADU programs (Orange County's Affordable ADU Loan Program is the model), and (c) the affordable-housing property-tax exemption under the Live Local Act (SB 102 / SB 328). The Department of Economic Opportunity (DEO) — now reorganized as the Department of Commerce — provides technical assistance to local governments but no statewide ADU-specific mandate or program. Major counties (Miami-Dade, Orange, Pasco, Hillsborough, Pinellas, Broward) have published their own ADU ordinances and guidance documents.
Federal (United States) — ADU-relevant rules and programs
Federal ADU law
The United States has no federal statute that directly regulates accessory dwelling unit entitlement or design. Land-use authority over ADUs resides with states and local governments under the traditional police power. Federal engagement is limited to financing (Fannie/Freddie/FHA/VA/USDA), flood insurance (FEMA/NFIP), and discretionary housing programs (HUD), which are recorded in sibling sections of this file.
Federal financing programs
Federal housing-finance agencies and GSEs set nationwide underwriting rules that govern whether an ADU can be financed, appraised, and counted toward mortgage qualifying income. The relevant actors are Fannie Mae, Freddie Mac, FHA (HUD), VA, and USDA Rural Development.
Federal tax credits
There is no ADU-specific federal tax credit. ADUs may incidentally qualify for existing federal energy-efficiency and clean-energy tax credits when the ADU construction includes qualifying measures.
Federal housing programs
HUD administers several discretionary programs that can fund ADU-related activity at the grantee's election, but none is an ADU-specific program.