ADU Rules & Zoning in Port St. Lucie, Florida (2026)
What ADU can you build in your Port St. Lucie backyard?
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Port St. Lucie 2026 ADU Requirements Snapshot
Port St. Lucie ADU rules under Florida SB-48. One of Florida's fastest-growing cities. Deed restrictions common in original Port St. Lucie subdivisions.
What this means for your lot
- Use the address checker first to verify parcel-specific zoning.
- Confirm setbacks and lot geometry before spending on plans.
- Check short-term rental rules carefully — they vary significantly by city.
Key gotchas
- Original PSL plat restrictions are still recorded and enforced — pull your specific lot's recorded deed restrictions before planning
- Port St. Lucie has extensive scattered development — ADU contractors serving this market are available but verify current availability
- St. Lucie County's rapid growth means impact fees are periodically updated — confirm current schedule before budgeting
Building Limits
- Max Size:1000 sq ft
- Setbacks:7ft side / 10ft rear
- Detached Allowed?Yes
- Max Height:25 ft
- Build Cost Est.:$85,000–$170,000
Rental Rules
No Owner-Occupancy Requirement: Both units can be rented to tenants simultaneously.
Short-Term Rentals: Not prohibited at the city level. State DBPR license required.
Estimated Monthly Income
$1,100–$1,700/month
Based on 2025–2026 Port St. Lucie market data
Key ADU Restrictions in Port St. Lucie
- Original Port St. Lucie subdivisions (platted in the 1960s–1980s) have widespread deed restrictions — many restrict accessory structures and rental use
- ADUs in RS zones must comply with St. Lucie County impact fees in addition to city building permit fees
- Lot size and layout vary significantly across Port St. Lucie's many subdivisions — verify your specific parcel's setback envelope
Common Mistakes to Avoid in Port St. Lucie
- Original PSL plat restrictions are still recorded and enforced — pull your specific lot's recorded deed restrictions before planning
- Port St. Lucie has extensive scattered development — ADU contractors serving this market are available but verify current availability
- St. Lucie County's rapid growth means impact fees are periodically updated — confirm current schedule before budgeting
Eligible Zones in Port St. Lucie
Port St. Lucie ADU — Frequently Asked Questions
Can I build an ADU in Port St. Lucie, Florida?
ADUs permitted on eligible single-family residential parcels in RS zones under Florida SB-48 (2026).
What is the maximum ADU size in Port St. Lucie?
Up to 1,000 sq ft under SB-48 statewide baseline.
Do I need to be an owner-occupant to build an ADU in Port St. Lucie?
Port St. Lucie does not require owner-occupancy. Both the primary home and ADU can be rented to tenants simultaneously.
Can I use my Port St. Lucie ADU as an Airbnb?
Port St. Lucie does not prohibit short-term rentals at the city level. You must obtain a Florida DBPR Vacation Rental Dwelling license.
How do I get an ADU permit in Port St. Lucie?
Building permit through Port St. Lucie Building Division. Full inspection process.
Port St. Lucie Planning Department
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This page provides general information based on current ordinances and publicly available data as of March 2026. Zoning rules change — verify all requirements with your local planning department before making financial commitments.