ADU Rules: Tampa vs Orlando (2026 Comparison)
Compare ADU regulations between Tampa and Orlando Florida. Both comply with FL HB 1339 (2024) preemption. Key differences: max sizes, impact fee structures, and impact fee amounts.
Side-by-Side Comparison
Tampa vs Orlando
| TampaFlorida | OrlandoFlorida | |
|---|---|---|
| ADUs Allowed? | Yes, by right (FL HB 1339, 2024) | Yes, by right (FL HB 1339, 2024) |
| State Preemption? | Yes — Florida HB 1339 effective July 1, 2024 | Yes — Florida HB 1339 effective July 1, 2024 |
| Max Detached ADU Size | 750 sq ft | 750 sq ft |
| Max Attached ADU Size | 50% of principal dwelling floor area up to 750 sq ft | 50% of principal dwelling floor area |
| Max ADU Height | 25 feet (2 stories) | 25 feet |
| Rear Setback | 5 feet | 5 feet |
| Side Setback | 5 feet | 5 feet |
| Owner Occupancy Required? | No (FL HB 1339 prohibits) | No (FL HB 1339 prohibits) |
| Estimated Total Fees | $8,000–$20,000 (Hillsborough County impact fees) | $10,000–$25,000 (Orange County impact fees) |
| Parking Required? | 1 space; none within 0.5 miles of transit | 1 space; none within 0.5 miles of transit |
Key Differences
Tampa and Orlando are both Florida cities operating under the same state ADU preemption framework — Florida HB 1339 (effective July 1, 2024) — creating identical core requirements: ministerial approval, no owner-occupancy requirement, and impact fees capped at single-family rates. Both cities allow ADUs up to 750 sq ft detached. The most significant difference is impact fees. Orange County (which governs much of the Orlando area) historically charged some of the highest impact fees in Florida — transportation, schools, and parks fees combined could reach $25,000+ before HB 1339 capped them. Hillsborough County (Tampa area) impact fees are lower, typically $8,000–$20,000 after HB 1339 caps. Geographic complexity is a key Orlando issue: much of what Airbnb and real estate sites call 'Orlando' is actually unincorporated Orange County, not within City of Orlando boundaries. City of Orlando is relatively small — many addresses in the 'Orlando area' are in Orange County jurisdiction. This matters for impact fees, permit offices, and STR rules. Tampa's historic neighborhoods (Ybor City — National Historic Landmark, Hyde Park, Seminole Heights) add design review complexity for ADU projects in those areas. Orlando's proximity to theme parks creates unique STR demand dynamics but does not directly affect ADU permitting.
Cost Comparison
Tampa ADU construction typically runs $150,000–$300,000. Total government fees (permit + Hillsborough County impact fees): $8,000–$20,000. Florida HB 1339 capped impact fees at the single-family rate, significantly reducing what were previously $15,000–$25,000+ impact fee burdens. Orlando (City of Orlando proper) ADU construction: $150,000–$300,000 similar to Tampa. Total fees (permit + Orange County impact fees): $10,000–$25,000. Orange County impact fees are higher than Hillsborough, giving Tampa a slight cost advantage in government fees. Both cities are substantially cheaper than California ADU development.
Our Verdict
Tampa and Orlando are nearly equivalent under Florida's HB 1339 preemption, but Tampa has a slight edge in lower impact fees (Hillsborough County vs Orange County) and clearer geographic jurisdiction. Orlando's geographic complexity — City of Orlando vs Orange County — requires careful due diligence to determine which rules apply to your specific address. Both cities are solid ADU markets in a growing state with no owner-occupancy requirement and ministerial approval. Florida remains one of the more ADU-friendly states after HB 1339.
Explore Each City
Frequently Asked Questions
What is Florida HB 1339 and how does it affect ADUs?
Florida HB 1339 (effective July 1, 2024) is a statewide ADU reform law that: eliminates owner-occupancy requirements for ADUs, caps ADU impact fees at the same rate as single-family homes, requires ministerial (non-discretionary) approval for ADUs meeting objective standards, and prohibits ADU setbacks more restrictive than those applicable to the primary dwelling. Both Tampa and Orlando comply with HB 1339.
Why are Orlando's impact fees higher than Tampa's?
Orange County (which governs most of the greater Orlando area) historically charged higher combined impact fees for transportation, schools, and parks than Hillsborough County (Tampa). Florida HB 1339 (2024) capped ADU impact fees at single-family rates in both areas, reducing the burden. Hillsborough County's capped rates tend to be lower than Orange County's. Contact the applicable county for current fee schedules.
If my property says 'Orlando' in the address, which rules apply?
Many Orlando-area addresses are in unincorporated Orange County, not within City of Orlando limits. Orange County and City of Orlando have separate building permit offices, impact fee schedules, and STR registration requirements. Check your official jurisdiction using Orange County's property lookup or GIS portal to determine whether you're in City of Orlando or unincorporated Orange County.
Do Tampa and Orlando require parking for ADUs?
Both cities require 1 off-street parking space per ADU unless the property is within one-half mile of a transit stop per Florida HB 1339. Tampa's HART bus system and Orlando's SunRail/LYNX network serve portions of each city. Verify transit proximity using each city's transit maps — properties near frequent bus routes or rail may qualify for the parking waiver.
Source: PropertyZoned Editorial Research. Last verified April 5, 2026. View source