LOTCHECK

St. Lucie County, Florida

Port St. Lucie — Development Guide

What can you build in Port St. Lucie? Live Local Act eligibility, ADU rules, setback requirements, and development potential for residential properties.

Port St. Lucie at a Glance

231.7K

Population

—

Parcels

—

Median Lot

—

Median Assessed

Building Code Requirements

These are the key dimensions and limits that govern what you can build in Port St. Lucie. Every project — whether it's a new home, ADU, remodel, or addition — must comply with these requirements.

35'

Max Height

25'

Front Setback

10'

Side Setback

25'

Rear Setback

35%

Lot Coverage

2

Parking / Unit

Values shown are for standard single-family residential zones. Multi-family zones, commercial zones, and overlay districts have different requirements. View all Port St. Lucie zone tables →

What You Can Build in Port St. Lucie

Florida's Live Local Act and state building code shape what you can build in Port St. Lucie. Here are the development options available to residential property owners.

Accessory Dwelling Unit (ADU)

State Law

The Live Local Act (SB 102, 2023) requires all Florida cities and counties to allow ADUs on single-family lots. Administrative approval required — no discretionary review. Local rules on size and setbacks may still apply.

State-mandated rightAdministrative approvalLocal size limits apply

Live Local Act — Density & Height

State Law

The Live Local Act (SB 102) and its 2024 amendment (SB 328) allow multifamily development at higher density and height on commercially zoned land if a percentage of units are workforce housing. This overrides local density caps and height limits.

Commercial zones eligibleWorkforce housing requiredOverrides local capsCounty-level height match

Florida Building Code Compliance

FBC 8th Edition

All new construction must comply with the Florida Building Code (8th Edition, 2023), including hurricane wind speed requirements, flood zone compliance (FEMA), and impact-resistant openings in designated wind-borne debris regions.

Hurricane wind ratingsFlood zone complianceImpact-resistant openingsEnergy code (FBC Energy)

Frequently Asked Questions

Can I build an ADU in Port St. Lucie, FL? +

Yes. Florida's Live Local Act (SB 102, 2023) requires all cities and counties to allow ADUs on single-family lots with administrative approval. Port St. Lucie must permit at least one ADU per residential property.

What building code does Port St. Lucie use? +

Port St. Lucie follows the Florida Building Code (FBC), 8th Edition (2023). This includes hurricane wind speed requirements, flood zone compliance, and energy efficiency standards specific to Florida's climate.

Do I need hurricane-rated windows in Port St. Lucie? +

If Port St. Lucie is in a designated wind-borne debris region (most of coastal Florida), impact-resistant openings or approved shutters are required. Check your specific wind zone designation with St. Lucie County.

What does an ADU cost to build in St. Lucie County? +

ADU construction in St. Lucie County, FL typically ranges from $100,000 to $350,000 depending on size, finishes, flood zone requirements, and hurricane-rated construction materials.