ADU Pass
Charlotte County
ADU Pass helps homeowners in Charlotte County, Florida navigate the permit paperwork for building an accessory dwelling unit. We cover 4 cities and 13 ZIP codes in this county.
Map
County ADU details
County ADU ordinance
Charlotte County regulates accessory dwelling units on unincorporated parcels through the Charlotte County Code of Ordinances, Chapter 3-5 (Zoning Regulations), administered by the Charlotte County Community Development Department. Charlotte is a Gulf-coastal county directly in the Hurricane Ian (Sept 2022) impact zone; Ian made landfall at Cayo Costa / Charlotte Harbor and produced extensive wind and storm-surge damage across Port Charlotte, Punta Gorda Isles, and the southwest portions of the county. Rebuilding activity remains a dominant feature of local permitting volume. The incorporated City of Punta Gorda handles its own permits; Port Charlotte, North Port (in Sarasota County but commonly confused), and the majority of county population live in unincorporated Charlotte. § 163.31771 FS is permissive only; Charlotte's ADU rules are local.
Code citations:
- Charlotte County Code of Ordinances, Chapter 3-5 — Zoning Regulations
- Florida Statutes § 163.31771 — Accessory Dwelling Units
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. Charlotte retains full discretion until enactment.
Adopting body: Charlotte County Board of County Commissioners
County permitting (unincorporated parcels)
Permits for ADUs on unincorporated Charlotte County parcels are issued by Charlotte County Community Development. Because most of Charlotte's population lives in unincorporated Port Charlotte, Harbour Heights, Burnt Store, Rotonda West, and similar communities, county-level permitting covers the bulk of county ADU activity. The City of Punta Gorda handles its own permits.
Process overview: A Charlotte County ADU permit is a combined zoning/building review: (1) zoning verification; (2) submission of site plan and construction drawings via Accela; (3) planning review including flood-zone, CCCL, and wetland checks; (4) building-code plan review against the Florida Building Code 8th Edition (2023); Charlotte is in the 'Hurricane 170-mph ultimate design wind speed' zone per the FBC wind-speed maps; (5) septic review by Florida DOH in Charlotte County; (6) issuance, inspections, CO. Post-Ian rebuilding activity produces 30-90 day extensions on typical permit timelines.
Impact fees: Charlotte County assesses school, transportation, parks, and fire impact fees. Post-Ian rebuilding permits receive fee waivers where the new construction replaces damaged original structures; fresh ADU additions are assessed at full rates. (schedule)
County assessor
The Charlotte County Property Appraiser maintains parcel-level assessment records for all real property in Charlotte County, including parcels within Punta Gorda. ADU additions are assessed as improvements to the host parcel. Florida's Save Our Homes 3% cap applies to the primary dwelling; improvements are added at full just value in the completion year. § 193.703 FS 'granny-flat' 20% assessment reduction is available.
Assessment policy: Permit data flows from Community Development to the Property Appraiser. Post-Ian, the Property Appraiser implemented a 'reduced-value' assessment program for severely damaged parcels during the rebuilding window; standard assessment resumes on parcels certified as repaired.
County overlays (6)
Charlotte County administers flood, coastal, CHHA, and wetland overlays. Gulf-front and Charlotte Harbor-adjacent parcels face extensive AE/VE flood mapping and CCCL exposure; Charlotte Harbor Aquatic Preserve imposes water-quality and mangrove-protection review. Post-Ian, FEMA revised flood-zone boundaries in some Charlotte areas, and the county adopted enhanced freeboard requirements above BFE.
- FEMA Special Flood Hazard Areas (SFHA) — AE and VE zones are extensive along the Gulf coast, Charlotte Harbor, the Peace River, and the Myakka River. Post-Ian, Charlotte adopted freeboard above BFE (typically 1-2 feet) for new construction. ADUs in SFHA require elevation, flood vents, and flood-resistant materials; VE zones require pile-foundation construction.
- Coastal High Hazard Area (CHHA) — Coastal Charlotte parcels fall within CHHA and face heightened comprehensive-plan review on intensification of residential use.
- Coastal Construction Control Line (CCCL) — Gulf-front Charlotte parcels seaward of the CCCL require state DEP permit in addition to county approval.
- Charlotte Harbor Aquatic Preserve — Parcels adjacent to Charlotte Harbor face enhanced setback, water-quality, and mangrove-protection review. Applies broadly across the county's coastal fringe.
- Southwest Florida Water Management District (SWFWMD) / South Florida Water Management District (SFWMD) Wellhead Protection — Parcels within mapped wellhead-protection zones face enhanced septic-siting review. Charlotte is split between SWFWMD and SFWMD boundaries.
- Wildland-Urban Interface (WUI) — Rural-eastern Charlotte tracts abutting pine-flatwoods face moderate WUI exposure.
Known county issues (2)
- policy-review — Pending Florida SB 48 / HB 313 (2026 session) — if enacted, Charlotte County and the City of Punta Gorda face a December 1, 2026 local ordinance compliance deadline for statewide by-right ADU allowance in single-family zones. Refresh within 30 days of enactment.
- staffing-shortage — Post-Hurricane Ian (Sept 2022) rebuilding volume continues to strain Charlotte County Community Development review capacity. Typical ADU permit timelines are 30-90 days longer than pre-Ian baselines. Citizens Property Insurance coastal underwriting tightened post-Ian across Charlotte parcels, materially affecting ADU project insurability and carrying cost.
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.