ADU Pass
Sorrento
ADU Pass helps homeowners in Sorrento, Lake County, Florida navigate the permit paperwork for building an accessory dwelling unit. This area covers 1 ZIP code.
Map
ADU details
ADU legality: allowed-with-restrictions
Florida's ADU statute is enabling, not preemptive. Florida Building Code 8th Edition (2023) wind-design (per ASCE 7-22) governs structural review. FEMA NFIP flood-zone requirements apply on SFHA parcels.
Cost scenarios
| Scenario | Sq ft | Permit | Build | Total |
|---|---|---|---|---|
| minimum | 200 | $2,200 | $49,000 | $51,200 |
| 600 | 600 | $2,200 | $147,000 | $149,200 |
| midpoint | 600 | $2,200 | $147,000 | $149,200 |
| 1000 | 1,000 | $2,200 | $245,000 | $247,200 |
| maximum | 1,000 | $2,200 | $245,000 | $247,200 |
Fee breakdown (as of 2026-04)
Permitting process
Viability (permitted uses)
- Long-term rental: yes Long-term rental of an ADU is generally permitted; Florida landlord-tenant law (Chapter 83 FS) governs.
- Short-term rental: with-restrictions Florida § 509.032 partially preempts STR regulation; vacation rentals must register with FDBPR. Local rules on noise, parking, and density may still apply. HOA covenants frequently restrict STR independently.
- Office rental: with-restrictions Detached office rental to a non-resident requires home occupation permit or rezoning.
- Home office: yes Home occupation by owner is permitted with restrictions on signage, customer traffic, and outside employees.
- Studio / workshop: yes Personal artist studio / workshop is a permitted accessory use in residential zones.
- Agriculture: with-restrictions Limited urban agriculture permitted in residential zones; livestock allowance is district-dependent (broader in A-1 / agricultural zones).
- Relative support: yes Family-occupancy ADU explicitly permitted; § 193.703 FS granny-flat assessment reduction available for qualifying senior-relative additions.
Incentives
Contacts
Utilities
- Water: City/County water utility (Sorrento or Lake County) where central; FDOH well permit elsewhere · 30d connect · $4,500
- Sewer: City/County sewer where central; FDOH septic for outlying parcels · 30d connect · $5,500
- Electric: Duke Energy Florida; SECO Energy in cooperative service area · 21d connect · $1,800
- Gas: TECO Peoples Gas where available; LP otherwise · 30d connect · $1,500
Property values & taxes
Construction timeline
Realistic total: best 8mo · typical 13mo · worst 18mo
Modular pathway inspectors are experienced with modular
Financing
State ADU loans:
Insurance impact
HOA prevalence & preemption
Florida Chapter 720 FS does not preempt HOA ADU bans; covenants restricting ADUs are enforceable.
Regulatory overlays (2)
- flood-zone
FEMA Special Flood Hazard Area mapping is present along low-lying lake/river frontage; ADUs in mapped SFHA require elevation certificates and flood-resistant construction. - other
Northeastern Lake County falls within the Wekiva River Protection Area and the larger Wekiva Study Area (Chapter 369 Part III FS). ADUs on Wekiva-area parcels face enhanced open-space, setback, and septic-system review and may require nitrogen-reducing onsite sewage treatment.
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- Amendment
- Amendment
Legal history (timeline)
Current ordinance: Lake County Land Development Regulations - Accessory Residential Use (applied to Sorrento), adopted 2018-01-01, last amended 2024-01-01
- 2007-07-01 — Florida Statutes § 163.31771 enacted (state-statute)
Enabling statute authorizing local governments to adopt ADU ordinances on parcels zoned for single-family residential use.
Effect: Set the permissive Florida ADU framework still in force in 2026. - 2023-03-29 — Live Local Act (SB 102) signed (state-statute)
Affordability framework with by-right multifamily preemption on commercial/industrial/mixed-use parcels for projects with at least 40% affordable units.
Effect: Indirect ADU effect; does not compel ADU approvals in single-family zones.
Lake County — county ADU rules and overlays
County ADU ordinance
Lake County regulates accessory dwelling units on parcels in unincorporated Lake through the Lake County Land Development Regulations (LDR), administered by the Lake County Department of Planning & Zoning. Lake sits in Florida's central growth corridor — the Orlando-to-Ocala axis — and has been one of the state's fastest-growing counties by percentage over the past decade. § 163.31771 FS is permissive only; Lake's ADU rules arise entirely from local zoning, and the county's framework treats 'guest cottages' and 'accessory apartments' as the relevant categories, each permitted with conditions in specified residential and agricultural districts.
State-floor overlay: No Florida statewide ADU preemption floor exists as of April 2026. SB 48 / HB 313 (2026 session) is the active preemption bill. Lake retains full discretion until enactment.
County regulatory overlays
Lake County administers flood, wetland, and aquifer-protection overlays that cut across jurisdictions. The county sits on a major karst terrain with extensive surface-water resources (the Harris Chain of Lakes and the headwaters of the Ocklawaha River), and lakefront / wetland buffer regulations materially affect ADU siting.
- FEMA Special Flood Hazard Areas (SFHA) — AE-zone flood mapping is extensive along the Harris Chain of Lakes, Lake Apopka, and the Ocklawaha system. ADUs in SFHA require elevation to/above BFE plus county freeboard, flood vents, and flood-resistant materials.
- Wekiva River Protection Area — Northeastern Lake County falls within the Wekiva River Protection Area and the larger Wekiva Study Area. Development within these overlays faces enhanced open-space, setback, and septic-system review. An ADU on a Wekiva-area parcel may require enhanced nitrogen-reducing septic treatment.
- Green Swamp Area of Critical State Concern — Southwestern Lake County lies within the Green Swamp Area of Critical State Concern — a state-designated overlay protecting Florida's major aquifer recharge area. Development standards are stricter than elsewhere in the county and require state-agency coordination on larger projects; ADUs on Green Swamp parcels face heightened septic-system, lot-coverage, and open-space review.
- St. Johns River Water Management District Wellhead & Shoreline Protection — Parcels within mapped wellhead-protection zones face enhanced septic-siting review. Shoreline setback requirements on the Harris Chain of Lakes are administered at the county level in conformance with SJRWMD rules.
- Wildland-Urban Interface (WUI) — Lake County has significant pine-flatwood and scrub-oak exposure adjacent to residential subdivisions. WUI construction standards are applicable on higher-hazard parcels; practical enforcement is still maturing relative to western states.
County permitting (unincorporated parcels)
Permits for ADUs on unincorporated Lake County parcels are issued by the Lake County Office of Planning & Zoning (zoning review) and the Lake County Building Services Division (building review). Incorporated Lake municipalities — Tavares (county seat), Leesburg, Clermont, Mount Dora, Eustis, Groveland, Minneola, Lady Lake, Mascotte, Umatilla, Fruitland Park, Astatula, Montverde, Howey-in-the-Hills — handle their own ADU permits. Lake's geography is dominated by the Harris Chain of Lakes and associated wetlands, which materially affects ADU siting on lakefront parcels.
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.
ZIP Code
- 32776
Post Office
- 24106 State Road 46, 32776