Looking for an industrial real estate broker in St. Lucie County? Ironmark Capital Advisory represents owners, tenants, buyers and investors across the county, SIOR-designated, from Tradition and Legacy Park to the I-95 and Turnpike corridor in Fort Pierce. The county’s industrial market has split by building size: small-bay space in the city of Port St. Lucie was 6.5% vacant as of 7 August 2026, while the large logistics buildings inland and in Fort Pierce ran 11.8% to 13.0% vacant, according to Ironmark research.
The St. Lucie County Industrial Market Now
St. Lucie County holds about 27.4M SF of industrial space, roughly 11.6% vacant. Together with Martin County it forms the Treasure Coast market: 35.1M SF, 12.6% vacant, with an average asking rent of $13.64 per SF and 1.33M SF under construction.
The vacancy is a supply story, not a demand story. Treasure Coast inventory grew about 30% in five years (8.9M SF), including a record 5.6M SF delivered in 2023. Vacancy peaked at 14.9% in the second quarter of 2024 and has been coming down since. Rent growth has slowed to 2.6% a year, the lowest since 2013.
Ironmark research, data as of 7 August 2026. Vacancy is vacant space as a share of total inventory. Asking rent is the average asking rent per square foot per year, across lease types.
Submarkets and Parks
| Submarket | Inventory | Avg building | Vacancy | Asking rent / SF | Rent YoY | Under construction |
|---|---|---|---|---|---|---|
| Port St. Lucie (city) | 3.6M SF | 11,100 SF | 6.5% | $16.99 | +1.8% | 13K SF |
| St. Lucie Inland (Tradition, Southern Grove, I-95 west) | 11.4M SF | 43,900 SF | 13.0% | $12.66 | +3.2% | 1.02M SF |
| Fort Pierce | 12.4M SF | 23,200 SF | 11.8% | $11.78 | +2.9% | none |
St. Lucie Inland: Tradition and Legacy Park
This is where the county’s big-box growth is. Legacy Park at Tradition is a 425-acre park planned for about 5.4 million SF. It already houses Amazon (220,000 SF), FedEx Ground (245,000 SF) and Cheney Brothers (367,000 SF). Costco’s 595,000 SF depot is due in December 2026 and is most of the area’s construction pipeline. Glades Logistics Park, Accel International Industrial Park, Sands Commerce Center and St. Lucie West round out the area. Space here is plentiful, and rents are the softest in the county.
Fort Pierce: the I-95 and Turnpike Merge
Fort Pierce has the most industrial space in the market and the most available. Interstate Crossroads Logistics Center (1 million SF, 40-foot clear) sits between I-95 and the Turnpike. Kings Logistics Center is planned on 65 acres along Kings Highway. Older, smaller buildings line Angle Road, Industrial Avenue, Crossroads Parkway and Orange Avenue, which is where contractor and yard users look first.
Port St. Lucie: Small-Bay Infill
The city’s industrial stock is small buildings along US-1, Dixie Highway and Village Green Drive, averaging about 11,000 SF each. It is the tightest part of the county at 6.5% vacancy and the most expensive at $16.99 per SF, with almost nothing under construction.
What Size of Space Trades, and What Is Scarce
Most of the county is small buildings. The typical industrial building is about 12,350 SF, and 40% are between 5,000 and 10,000 SF. Leases are smaller still: the typical lease is about 1,900 SF, and two in three are 2,500 SF or less. The new supply since 2023 has been large-format logistics. That leaves big blocks of space easy to find inland and in Fort Pierce, and small bays in the city scarce.
What Governs This Market
- Population growth. The Treasure Coast’s population is about 575,000, up nearly 15% in five years, and service and distribution demand follows it.
- The I-95 and Turnpike confluence. Fort Pierce is the northernmost point where the two highways meet, which is what drew the 2023–24 wave of speculative logistics building.
- Available land. Large entitled tracts at Tradition and along Kings Highway mean new supply can arrive quickly. That has kept rent growth moderate.
How Ironmark Works in St. Lucie County
Owners and sellers: start with a free property valuation. In a market where vacancy sits in the large buildings, an owner of small-bay space is selling the scarce product. Tenants: with large blocks available inland, tenants needing 50,000 SF or more have real choice and room to negotiate; see tenant representation. Landlords of large-format space face the most competition and need a leasing plan built on current concessions. Buyers and investors will find average cap rates of 7.7% to 8.4% by submarket. Yard and contractor users should start in the Fort Pierce corridors; our outdoor storage page covers truck parking and yards statewide.
Buying, selling, or leasing industrial in Port St. Lucie?
Tell us the property or the requirement. Ironmark will come back within one business day with a written read on your Port St. Lucie situation — what it is worth, what is available, or what the market will bear. No cost, no obligation.
Frequently Asked Questions
What is the industrial vacancy rate in St. Lucie County?
About 11.6% across St. Lucie County as of 7 August 2026, according to Ironmark research. It ranges from 6.5% for small-bay space in the city of Port St. Lucie to 13.0% in the large logistics buildings around Tradition and west of I-95.
How much does warehouse space rent for in Port St. Lucie?
The average asking rent in the Port St. Lucie city submarket was $16.99 per SF per year as of 7 August 2026, according to Ironmark research. Larger buildings around Tradition averaged $12.66 and Fort Pierce $11.78. Small bays cost more per foot than big blocks.
Where are the industrial parks in St. Lucie County?
The main parks are Legacy Park at Tradition (Amazon, FedEx Ground, Cheney Brothers, and a Costco depot due December 2026), St. Lucie West, Glades Logistics Park, and in Fort Pierce, Interstate Crossroads Logistics Center and the planned Kings Logistics Center on Kings Highway.
Is there new industrial construction on the Treasure Coast?
Yes. About 1.33M SF was under construction across St. Lucie and Martin counties as of 7 August 2026, according to Ironmark research. Most of it is Costco’s 595,000 SF depot at Legacy Park.
What size warehouse is most common in St. Lucie County?
The typical industrial building is about 12,350 SF, and the typical lease about 1,900 SF. Two in three leases are 2,500 SF or less, so small-bay space is the core of the market.
Does Ironmark cover Martin County too?
Yes. Ironmark covers the whole Treasure Coast, including Stuart, Palm City, Jensen Beach and Indiantown, where the market is tighter and rents are higher.
Talk to a Port St. Lucie advisor →
Nearby Florida Industrial Markets
Many Port St. Lucie requirements cross county lines. Nearby, Ironmark also covers Martin County and Melbourne, and every other Florida market is on our markets page.
Market data: Ironmark research, data as of 7 August 2026; Treasure Coast market history from the same research. Park and tenant details: public developer and economic-development sources. Refreshed quarterly. Informational only — not tax, legal, or appraisal advice.