In most of Tampa, the answer is no, at least not the kind of ADU you can rent to a stranger. The city permits conventional accessory dwelling units in a short list of designated areas. Outside those areas, a second unit is only allowed as an Extended Family Residence, which carries a different set of rules and cannot be rented on the open market.
Which one applies to you depends on your parcel, not your neighborhood’s name. That distinction is where most planning goes wrong.
Two different things with similar names
Tampa separates second units into two categories, and the practical difference is who is allowed to live in them.
An accessory dwelling unit is a fully independent living space with its own kitchen, bathroom and sleeping area. Tampa’s code allows ADUs to be constructed in Seminole Heights, the area around Lowry Park, the East Tampa Overlay and the Tampa Heights Overlay. In those areas, the unit can be rented to anyone.
An Extended Family Residence is the option everywhere else in the city. Outside the designated ADU areas, a second unit may only be created for a family member, and the main residence must be owner-occupied. The EFR path is available citywide, but the occupancy restriction is the whole point of it, and it is enforced.
If your plan depends on rental income, the difference between these two determines whether the plan works at all.
Eligibility is parcel-level, not neighborhood-level
Overlay boundaries do not follow the lines people use in conversation. “Seminole Heights” covers several distinct areas, and the mapped overlay does not necessarily include everything locals would call by that name. A house four blocks from an eligible parcel may sit outside the boundary.
The zoning district matters too, not just the overlay. A parcel can fall inside a designated area and still not qualify if its zoning district does not permit the use.
The City of Tampa publishes a GIS lookup tool where you can check a specific address against the eligible areas, linked from its accessory dwelling unit page. Running your address through it is the first step, before any design work, because it decides which rulebook you are building under.
It is also worth noting that Tampa has been revisiting these boundaries. The eligible areas have been the subject of community outreach and periodic amendment, so a map checked two years ago may no longer be current in either direction.
The dimensional rules, and an important exception to them
Tampa publishes a set of general ADU standards, and they apply across the eligible area with one significant carve-out: neighborhood overlay districts and historic districts have their own separate guides. Seminole Heights, East Tampa and Tampa Heights each have one. So if your parcel is in Seminole Heights, the general standards below are the starting point rather than the final answer, and the district guide governs where the two differ.
The general standards:
Size. The unit is capped at 950 square feet. That is generous enough for a genuine one-bedroom with a real kitchen, and tight enough that two bedrooms means compromising elsewhere.
Parking. One off-street parking space is required per unit. There is no size threshold below which the requirement disappears, so a compact unit needs a space just as a 950 square foot unit does. On a narrow lot with no alley access, finding that space can be the binding constraint on whether the project works at all.
Separation from the main house. A detached unit must sit at least 10 feet from the principal structure in RS-75, RS-100 and RS-150 districts, and at least 5 feet in all other districts.
Setbacks. 60 feet from the street, 3 feet from the rear and interior side lot lines, and 15 feet from the street side on a corner lot in RS-75, RS-100 and RS-150, or 7 feet elsewhere. If the ADU exceeds 15 percent of the lot size, the rear setback increases to 20 feet and the side to 7 feet.
Occupancy. The owner has to reside on the property, and the unit is limited to a maximum of two unrelated adults.
Form. The unit can be built inside the existing house with its own entrance, or as a separate structure. A separate utility meter is permitted. Converting part of an existing footprint is often cheaper than building new, though it trades away square footage in the main house.
An ADU also has to meet everything else that applies to new construction on the parcel, including setbacks, height limits, lot coverage and, where relevant, floodplain regulations. On a flood zone property the ADU budget interacts with the city’s substantial improvement threshold in ways that are worth modeling early, though in Tampa the applicable threshold is the standard 50%.
Hillsborough County is a separate question
If the address is in unincorporated Hillsborough County rather than inside Tampa city limits, none of the above applies. The county runs its own ADU framework with different size caps and different placement rules, and the two have been moving in different directions.
Plenty of addresses with a Tampa mailing address are not in the City of Tampa. Confirming the jurisdiction is part of the same first step as confirming the overlay.
What this looks like in practice
A detached ADU is a small house. It needs a foundation, a roof, a full electrical service, water and sewer connections, and a kitchen that meets code. Approval involves a zoning review in addition to the building permit, which adds time before construction can start.
The projects that go smoothly are the ones where eligibility was confirmed before anyone drew anything. The ones that stall are the ones where a design was developed, a budget was set around it, and the parcel turned out to be EFR-only or short on the separation distance.
We built a detached unit on a Seminole Heights property where the parcel qualified under the overlay, and the zoning path was settled before design began. If you are weighing a second unit against expanding the main house instead, the comparison between an ADU and a home addition comes down to different factors than most people expect, and we cover that separately. Our general contracting services cover both routes.
Frequently asked questions
Where exactly can I build an ADU in Tampa? The city’s designated areas are Seminole Heights, the area around Lowry Park, the East Tampa Overlay and the Tampa Heights Overlay. Eligibility is determined parcel by parcel against the city’s map, and the city has periodically revisited these boundaries, so check the current version.
Can I rent out an Extended Family Residence? No. An EFR is limited to a family member, and the main residence has to be owner-occupied. If rental income is the goal, the parcel needs to qualify for a conventional ADU.
How big can a Tampa ADU be? The general standard caps the unit at 950 square feet. Overlay and historic districts, including Seminole Heights, have their own guides, so confirm which standards apply to your parcel.
Do I need to provide parking for an ADU in Tampa? Yes. The general standards require one off-street space per unit, with no exemption for smaller units.
Do I have to live on the property? Yes. The owner has to occupy either the main house or the accessory unit.
Can I convert my garage into an ADU? Potentially, if the parcel is eligible and the structure can be brought up to the requirements for habitable space. A conversion still needs a permit, still has to meet separation and setback rules, and still needs code-compliant plumbing, electrical and egress.
How long does approval take? Longer than a standard building permit, because the zoning review happens before the construction permit is issued. The timeline depends on the completeness of the submittal and the city’s current review queue.
Limarcar Remodeling is a licensed general contractor (CGC1534789) working across Tampa and St. Petersburg. Zoning and overlay boundaries change, and eligibility is specific to each parcel. The City of Tampa is the authority on whether a given address qualifies.