Mattamy At Southern Grove
Homes for Sale in Port St. Lucie, FL

Mattamy At Southern Grove is a small-footprint builder community in Port St. Lucie where the median sale closed at $449,900 and homes moved in just over two months; the year-over-year price decline of 8.2% reflects broader St. Lucie repricing rather than project-specific distress.

BeachesMLS sales records identify 19 homes in Mattamy At Southern Grove that have changed hands since 2020, built between 2020 and 2022 (median 2021), with a median living area of about 2,105 sq ft and a typical 3-bedroom, 2.5-bath layout; 100% are single-family homes. Source: BeachesMLS closed-sale history compiled by Momentum Research; counts reflect homes with a recorded MLS sale, not every home in the community.

County records show 12 qualified sales in Mattamy At Southern Grove across 2024–2025 (4 in 2024, 8 in 2025), median $455,000 — the last recorded sale per parcel on the Florida DOR 2025 assessment roll, independent of the MLS.

Pre-construction details are compiled from public records, builder announcements and builder listings, and are subject to change without notice; figures are deemed reliable but not guaranteed. Momentum Research figures are our own analysis. This page describes homes, pricing and community attributes, not residents.

Mattamy At Southern Grove is too small for its own price trend, so here is the market around it.

In ZIP 34987, 713 homes are on the market and 27% are under contract — a steady corner of Port St. Lucie.

Across St. Lucie County, 2,770 homes are active and 734 pending (21% under contract).

In ZIP 34987 (Port St. Lucie), 308 homes closed in the last 12 months at a median of $430K ($217/sq ft), with a median 69 days on market. Right now 96 active and 48 pending listings put supply at about 3.7 months — a balanced market. See the live ZIP 34987 housing market and the St. Lucie County market.

ZIP and county figures describe the wider market, not Mattamy At Southern Grove specifically. Momentum Research analysis of MLS records.

Mattamy At Southern Grove sits in Port St. Lucie, where the story is straightforward: this is a builder community offering new construction at a median of $449,900 and $225 per square foot. The 8.2% year-over-year decline is consistent with the county-wide correction; it does not signal project failure but rather the end of the spike and a return to more measured pricing. Three closings in the trailing window suggest either a new phase or limited inventory, so if you are shopping here, expect fewer choices and less negotiating leverage than in a mature resale neighborhood.

MLS data shows no identified community amenities—no pool, no clubhouse, no trails listed in current offerings. That means you are buying the home itself: Mattamy finish, builder warranty, and the ability to walk into a turnkey product without renovation. The 62-day median time on market is neither fast nor stalled; it reflects a market where buyers are deliberate and builders are no longer seeing bidding wars. If your priority is new construction in Port St. Lucie and you are comfortable with a utilitarian community envelope, the pricing here is rational. If you expect resort-style common areas or a deep sense of neighborhood, keep shopping.

Mattamy At Southern Grove is a builder community, and builder sales teams work for the builder—not for you. Momentum represents your interest: we read the purchase agreement for upgrade caps and delivery timelines, we compare the builder's pricing against resale comps in Port St. Lucie, and we tell you when the premium for new construction is justified and when it is not. In a market down 8.2% year over year, that independent analysis is the difference between a sound buy and overpaying for newness. We know St. Lucie County, we know Mattamy's product and contract terms, and we will walk you through the decision without the sales pressure.