Port St. Lucie is the largest city in St. Lucie County, and over the past few months it’s also become one of the busiest corners of the Treasure Coast housing market. From May through late August 2026, the city logged 2,315 active listings and 1,913 closed sales, at an average sold price of $405,205.

Countywide, single-family home sales in St. Lucie dipped slightly this year, down about 5 percent, with average sale price essentially flat compared to last year. Port St. Lucie’s own numbers are holding up well against that backdrop, and there’s a clear reason buyers keep looking here.

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The hospital expansion

HCA Florida St. Lucie Hospital opened a major women’s care expansion on January 28, 2026. The new floor includes a Level II neonatal intensive care unit, completely redesigned labor and delivery rooms, two dedicated obstetric operating rooms, and a three bed obstetric emergency room, all on one integrated floor. That expansion followed 35 new medical surgical beds that opened the previous November. In its own announcement, the hospital said the project reflects its commitment to meet the needs of what it called a rapidly growing community. That’s not marketing language pulled from nowhere, it’s a direct response to real population growth.

A brand new school

Tradition Lakes K-8 opened its doors on August 17, 2026, to roughly 1,100 students. The campus was designed to eventually serve up to 1,800 students, so there’s real room for the school, and the neighborhood around it, to keep growing. Two of the campus buildings are still under construction and fenced off, which is normal for a school this size opening in phases, not a red flag.

Costco is coming

In March 2026, the city agreed to sell Costco 22.8 acres in Southern Grove for $6 million. The plan is a 170,000 square foot store and gas station, sitting right next to a Costco distribution depot that’s already under construction and expected to employ around 500 people on its own. Port St. Lucie residents have been asking for a Costco for years, according to the city’s own announcement, and it’s finally moving forward.

What this means if you’re looking here

Buyer interest tied specifically to the hospital expansion or the new school hasn’t shown up as its own category yet. Port St. Lucie already has four hospitals in the area with two satellite emergency rooms, so one more expansion doesn’t register with buyers as a standalone reason to move.

The Costco news is still too early to be a factor in buyer or seller conversations. The distribution center has broken ground, but the retail store itself hasn’t started construction, and most people haven’t connected the two projects yet.

The part of Port St. Lucie that’s changing fastest right now, according to Michele, is traffic, and not in a good direction. As more development lands in the same corridors, the daily commute is the thing residents notice before any of the amenity stories catch up.

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