ADU Pass
Mango
ADU Pass helps homeowners in Mango, Hillsborough 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) governs structural review.
Cost scenarios
| Scenario | Sq ft | Permit | Build | Total |
|---|---|---|---|---|
| minimum | 200 | $2,700 | $50,000 | $52,700 |
| 600 | 600 | $2,700 | $150,000 | $152,700 |
| midpoint | 600 | $2,700 | $150,000 | $152,700 |
| maximum | 1,000 | $2,700 | $250,000 | $252,700 |
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 and HOA covenants may restrict further.
- Office rental: with-restrictions Detached office rental to non-resident requires home occupation permit or rezoning.
- Home office: yes Home occupation by owner is permitted with restrictions on signage and customer traffic.
- Studio / workshop: yes Personal artist studio / workshop is a permitted accessory use in residential zones.
- Agriculture: with-restrictions Limited urban agriculture is permitted in residential zones; livestock varies by district.
- Relative support: yes Family-occupancy ADU explicitly permitted; § 193.703 FS granny-flat assessment reduction available.
Incentives
Contacts
Utilities
- Water: Hillsborough County Public Utilities · 30d connect · $4,500
- Sewer: Hillsborough County Public Utilities (sewer) · 30d connect · $5,500
- Electric: Tampa Electric (TECO) · 21d connect · $1,800
- Gas: TECO Peoples Gas · 30d connect · $1,500
Property values & taxes
Construction timeline
Realistic total: best 7mo · typical 11mo · worst 16mo
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.
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- Amendment
- Amendment
Legal history (timeline)
Current ordinance: Mango Hillsborough County LDC — Accessory Dwelling Units, 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 directly compel ADU approvals in single-family zones.
Hillsborough County — county ADU rules and overlays
County ADU ordinance
Hillsborough County regulates accessory dwelling units on unincorporated parcels through the Hillsborough County Land Development Code (LDC), administered by Hillsborough County Development Services. The county includes the Tampa urban core (separately incorporated), the incorporated cities of Temple Terrace and Plant City, and a very large unincorporated territory that ranges from dense urban neighborhoods (Brandon, Town 'n' Country, Carrollwood, Citrus Park, University, Greater Sun City Center) to rural eastern and southern agricultural tracts. § 163.31771 FS is permissive only. Hillsborough's ADU rules arise entirely from local zoning, and the City of Tampa's active ADU ordinance (adopted 2020) governs parcels inside Tampa city limits — a materially different framework than the county's.
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. Hillsborough retains full discretion until enactment.
County regulatory overlays
Hillsborough County administers flood, coastal-high-hazard, airport-approach, and wellhead-protection overlays that cut across jurisdictions. Tampa Bay and three major river systems (Hillsborough, Alafia, Little Manatee) produce extensive AE-zone coverage, and the Tampa International Airport approach zones constrain height across much of the western half of the county.
- FEMA Special Flood Hazard Areas (SFHA) — AE- and VE-zone mapping is extensive along Tampa Bay, the Hillsborough River, the Alafia River, the Little Manatee River, and associated tributaries. ADUs in SFHA require elevation above BFE plus county freeboard, flood vents, and flood-resistant materials. VE-zone exposure on Tampa Bay produces pile-foundation or breakaway-wall requirements on affected parcels.
- Coastal High Hazard Area (CHHA) — Under state law, the CHHA is the area below the elevation of the Category 1 storm surge line as defined by the SLOSH model. Hillsborough's CHHA covers substantial portions of the Tampa Bay shoreline and limits certain intensification of residential development; ADUs in CHHA face heightened review under the Coastal Element of the comprehensive plan.
- Tampa International Airport (TPA) Approach & Height Zoning — Parcels within TPA approach and transitional surfaces face height limitations. A two-story ADU may require FAA Form 7460 notice on high-exposure parcels; the practical effect on one-story accessory units is limited.
- Southwest Florida Water Management District (SWFWMD) Wellhead Protection — Hillsborough parcels within mapped wellhead-protection zones face enhanced septic-siting review. Many unincorporated eastern Hillsborough parcels are on private septic and are affected.
- MacDill Air Force Base Accident Potential & Noise Zones — South Tampa parcels near MacDill AFB fall within Air Installation Compatible Use Zones (AICUZ) with accident-potential and noise-attenuation requirements. New residential construction — including ADUs — in designated APZ areas is restricted; parcels in the noise-attenuation zone require sound-insulating construction.
- Wildland-Urban Interface (WUI) — Practical WUI exposure in urbanized western Hillsborough is low. Eastern Hillsborough rural tracts abutting undeveloped pine flatwoods are higher-hazard; enforcement intensity is still maturing.
County permitting (unincorporated parcels)
Permits for ADUs on unincorporated Hillsborough County parcels are issued by Hillsborough County Development Services, which combines zoning, building, and floodplain review under one intake. Unincorporated Hillsborough is the second-largest unincorporated population in Florida and includes many dense suburban communities that operate de facto like cities. Incorporated municipalities (Tampa, Temple Terrace, Plant City) handle their own permits.
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
- 33550
Post Office
- 11507 Dr Martin Luther King Jr Blvd, 33550