Tampa allows ADUs in residential zones with careful attention to setbacks and storm resilience. The city is moderately restrictive, requiring compliance with flood zone regulations and wind-resistant construction standards.
Zoning & Size Requirements
| Allowed Zones | Residential single-family zones |
| Max Size (Detached) | 800 sq ft |
| Max Size (Attached) | 600 sq ft |
| Max Size (JADU) | Not allowed |
| Max Height | 30 feet |
| Max Units | 1 ADU per lot |
Setback Requirements
| Rear Setback | 20 feet |
| Side Setback | 5 feet |
| Front Setback | 25 feet |
| Parking Required | 1 space per unit |
| Owner Occupancy | Not required |
| Min Lot Size | 7,500 sq ft |
Permit Process & Fees
| Approval Process | Building permit + flood certification |
| Review Timeline | 75-100 days |
| Permit Fees | $3,500-$5,500 |
| Impact Fees | $1,400-$2,200 |
| Plan Check | 3-4 weeks |
| Pre-Approved Plans | Not available |
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Construction Costs
| Average Build Cost | $140,000-$280,000 |
| Cost per Sq Ft | $180-$350 |
| Garage Conversion | $70,000-$160,000 |
| Prefab ADU (Installed) | $100,000-$230,000 (installed) |
Finance Your ADU Project
Most ADU projects are funded through HELOCs, construction loans, or cash-out refinancing. Compare rates from top lenders in minutes.
Compare ADU Financing Options →Rental Income Potential
| Avg Rent (1 Bedroom) | $1,300-$1,850/mo |
| Avg Rent (2 Bedroom) | $1,650-$2,400/mo |
| Short-Term Rental | Restricted in most zones |
| Est. Annual ROI | 6-8% annual return |
Explore Prefab ADU Options
Prefab ADUs can save 20-40% vs. traditional construction and cut build time in half. Compare top prefab manufacturers.
Compare Prefab ADUs →Recent Law Changes
What's Changed Recently
- 2024: Expanded ADU allowance in new mixed-use developments
- 2023: Updated flood zone requirements for elevation standards
- 2024: Streamlined permitting for elevated construction ADUs
- 2023: Added wind-resistant design requirements for all new ADUs
Tips for Building an ADU in Tampa
- Flood elevation is mandatory; most ADUs require pilings or elevated platforms
- Wind-resistant construction is non-negotiable; premium materials required
- Tampa's strong rental market supports good ROI if flood compliance is addressed
- Insurance costs higher due to flood/hurricane risk; factor into financial projections
Frequently Asked Questions
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