Penthouses for Sale in St. Lucie County
Before You Buy a Penthouse in St. Lucie County, Know the Building.
St. Lucie County's penthouses are on the ocean: the top floors of the oceanfront buildings of Hutchinson Island and North Hutchinson Island, and the inlet and ocean buildings of Fort Pierce. The towers are lower and the buildings fewer than to the south, so a penthouse here is more often the top floor of a mid rise building on the sand than a full floor residence in a tower, and the comparison is with the island's own sales rather than with the towers to the south. The county page keeps every one.
Explore Penthouses for Sale · Get My Private Buying Strategy
12 penthouses are for sale in St. Lucie County on the MLS as of October 30, 2026.
St. Lucie County Penthouses: the Numbers
As of October 30, 2026. Condominiums for sale in St. Lucie County whose MLS unit number marks them as a penthouse (PH, UPH, LPH). BeachesMLS listings (IDX). Asking prices, not closed sales. The county page counts every city in the county; each city page lists its own.
- Penthouses for sale: 12
- Median asking price: $479,950
- Median asking price per square foot: $241
- Listed in the past seven days: 0
- Listed in the past 30 days: 3
- With a reduced asking price: 5
By City
- Fort Pierce: 10
- Hutchinson Island: 2
A median of fewer than 5 listings is shown as —. A home entered twice in the MLS appears once. A price cut larger than half the original price is read as a data entry error.
Penthouses by City in St. Lucie County
Every St. Lucie County city page, with this page's own count where it has one:
Penthouses by Building in St. Lucie County
Every building with a penthouse for sale on this page, with each building's own page where this site has one: its units for sale and for rent, its recent closings and its figures.
- Harbour Isle at Hutchinson Island West: 3
- Harbour Isle West: 3
- Altamira: 1
- Atlantic View Beach Club Condominium No 1: 1
- Harbour Isle: 1
- Harbour Isle at Hutchinson Island East: 1
- Harbour Isle at Hutchinson Island West, A: 1
- Sands on the Ocean Section 1: 1
The Largest Penthouses for Sale in St. Lucie County
- 4310 N Hwy A1A PH1S, Fort Pierce: 2,635 sq ft, $1,250,000 ($474 per sq ft), Altamira
- 13 Harbour Isle Drive PH02, Fort Pierce: 1,989 sq ft, $425,000 ($214 per sq ft), Harbour Isle West
- 30 Harbour Isle Drive PH02, Fort Pierce: 1,989 sq ft, $599,000 ($301 per sq ft), Harbour Isle at Hutchinson Island West
- 31 HARBOUR ISLE Drive PH05, Fort Pierce: 1,989 sq ft, $489,900 ($246 per sq ft), Harbour Isle at Hutchinson Island West
- 34 HARBOUR ISLE Drive PH05, Fort Pierce: 1,989 sq ft, $459,000 ($231 per sq ft), Harbour Isle West
- 21 Harbour Isle Drive Ph02, Fort Pierce: 1,989 sq ft, $575,000 ($289 per sq ft), Harbour Isle at Hutchinson Island West
Newest Penthouse Listings in St. Lucie County
Each card shows the asking price, the price per square foot, the building, the facts the listing carries and, where the asking price has been reduced, the previous price and the date it changed. Sort and filter the list by county, city, building, price, bedrooms, waterfront, reduction and listing date on this page.
$425,000
13 Harbour Isle Drive PH02, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $214 per sq ft · Waterfront · Built 2005
Harbour Isle West
$500,000
3100 N HIGHWAY A1A PHB05, Fort Pierce FL 34949
2 bd · 2 ba · 1,207 sq ft · $414 per sq ft · Waterfront · Built 1983
Sands on the Ocean Section 1
$599,000
30 Harbour Isle Drive PH02, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $301 per sq ft · Waterfront · Built 2006
Harbour Isle at Hutchinson Island West
$1,250,000
4310 N Hwy A1A PH1S, Fort Pierce FL 34949
3 bd · 3 ba · 2,635 sq ft · $474 per sq ft · Waterfront · Built 2004
Altamira
$489,900 $495,000
Reduced $5,100 (1%) on Oct 13, 2026
31 HARBOUR ISLE Drive PH05, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $246 per sq ft · Waterfront · Built 2006
Harbour Isle at Hutchinson Island West
$459,000
34 HARBOUR ISLE Drive PH05, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $231 per sq ft · Waterfront · Built 2006
Harbour Isle West
$575,000 $595,000
Reduced $20,000 (3.4%) on Sep 25, 2026
21 Harbour Isle Drive Ph02, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $289 per sq ft · Waterfront · Built 2005
Harbour Isle at Hutchinson Island West
$469,000
26 Harbour Isle Drive Ph06, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $236 per sq ft · Waterfront · Built 2006
Harbour Isle West
$470,000 $495,000
Reduced $25,000 (5.1%) on Sep 14, 2026
20 Harbour Isle Drive Ph01, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $236 per sq ft · Waterfront · Built 2005
Harbour Isle
$399,900 $475,000
Reduced $75,100 (15.8%) on Oct 12, 2026
8 Harbour Isle Drive Ph5, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $201 per sq ft · Waterfront · Built 2005
Harbour Isle at Hutchinson Island East
$430,000
17 Harbour Isle Drive Ph03, Hutchinson Island FL 34949
2 bd · 2 ba · 1,989 sq ft · $216 per sq ft · Waterfront · Built 2005
Harbour Isle at Hutchinson Island West, A
$699,000 $720,000
Reduced $21,000 (2.9%) on Jun 24, 2025
5047 N Highway A1a Ph-2, Hutchinson Island FL 34949
2 bd · 2 ba · 1,422 sq ft · $492 per sq ft · Built 1989
Atlantic View Beach Club Condominium No 1
Oceanfront and Waterfront Penthouses in St. Lucie County
11 listings.
- $425,000
13 Harbour Isle Drive PH02, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $214 per sq ft · Waterfront · Built 2005
Harbour Isle West - $500,000
3100 N HIGHWAY A1A PHB05, Fort Pierce FL 34949
2 bd · 2 ba · 1,207 sq ft · $414 per sq ft · Waterfront · Built 1983
Sands on the Ocean Section 1 - $599,000
30 Harbour Isle Drive PH02, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $301 per sq ft · Waterfront · Built 2006
Harbour Isle at Hutchinson Island West - $1,250,000
4310 N Hwy A1A PH1S, Fort Pierce FL 34949
3 bd · 3 ba · 2,635 sq ft · $474 per sq ft · Waterfront · Built 2004
Altamira
Penthouses With a Reduced Asking Price in St. Lucie County
5 listings.
- $489,900
$495,000
Reduced $5,100 (1%) on Oct 13, 2026
31 HARBOUR ISLE Drive PH05, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $246 per sq ft · Waterfront · Built 2006
Harbour Isle at Hutchinson Island West - $399,900
$475,000
Reduced $75,100 (15.8%) on Oct 12, 2026
8 Harbour Isle Drive Ph5, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $201 per sq ft · Waterfront · Built 2005
Harbour Isle at Hutchinson Island East - $575,000
$595,000
Reduced $20,000 (3.4%) on Sep 25, 2026
21 Harbour Isle Drive Ph02, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $289 per sq ft · Waterfront · Built 2005
Harbour Isle at Hutchinson Island West - $470,000
$495,000
Reduced $25,000 (5.1%) on Sep 14, 2026
20 Harbour Isle Drive Ph01, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $236 per sq ft · Waterfront · Built 2005
Harbour Isle
Penthouses Under $1 Million in St. Lucie County
11 listings.
- $399,900
$475,000
Reduced $75,100 (15.8%) on Oct 12, 2026
8 Harbour Isle Drive Ph5, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $201 per sq ft · Waterfront · Built 2005
Harbour Isle at Hutchinson Island East - $425,000
13 Harbour Isle Drive PH02, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $214 per sq ft · Waterfront · Built 2005
Harbour Isle West - $430,000
17 Harbour Isle Drive Ph03, Hutchinson Island FL 34949
2 bd · 2 ba · 1,989 sq ft · $216 per sq ft · Waterfront · Built 2005
Harbour Isle at Hutchinson Island West, A - $459,000
34 HARBOUR ISLE Drive PH05, Fort Pierce FL 34949
2 bd · 2 ba · 1,989 sq ft · $231 per sq ft · Waterfront · Built 2006
Harbour Isle West
What Penthouse Buyers Weigh in St. Lucie County
- With few penthouse sales to compare, the building's own history and the sales nearest it on the island carry more weight than a county average.
- Oceanfront buildings here carry the same milestone inspection and reserve rules as the rest of the coast; ask for the reports and the assessment status.
- The run to the Fort Pierce Inlet makes a slip in an inlet building worth asking about; confirm what conveys with the unit.
The Building Decides What the Penthouse Is Worth
A penthouse shares its roof, its elevators and its budget with every residence below it, and it usually carries the largest share of whatever the association decides to spend. Before you price an offer, read the association budget, the reserve study, the milestone inspection report and any special assessment, and ask who pays when the roof above your ceiling leaks. A BreakThru Realty broker gathers those documents with the building's own penthouse sales, so you compare the residence with the ones it actually competes with. Request a private penthouse review on this page and we start with the building.
Three Top Floors Can All Be Called Penthouses
Many towers label two or three upper floors as penthouses, lower and upper, and some label a whole line of large residences that way. The word tells you less than the floor plan, the ceiling height, the deeded terrace and the line of the view. We read the plan and the declaration of condominium with you, confirm what the unit owns and what it only has the use of, and show you the top floor residences listed under plain unit numbers that never appear on a page like this.
How to Read a Penthouse Listing
- Price the terrace and the view, not the label
- Two penthouses in the same building can differ widely in price on the terrace, the ceiling height and the direction they face. Compare the asking price with the penthouses sold in that building and the towers beside it, not with the units on the floors below.
- Read the reserves before the finishes
- A renovated penthouse in a building facing a large assessment can cost more than a dated one in a building with funded reserves. Ask for the budget, the reserve study, the milestone inspection and the minutes of the last board meetings.
- Ask what the unit owns
- Rooftop terraces, plunge pools, private elevator landings, cabanas, storage and parking are deeded differently from building to building. The declaration says what conveys with the unit and what is a limited common element you share or lease.
- Count the new towers nearby
- A penthouse in an older oceanfront building competes with the top floors of the new construction a few blocks away. The developer's current pricing, the deposit terms and the delivery date are part of the comparison.
Get Penthouse Alerts for St. Lucie County
Choose a place and a budget. We email you each penthouse that comes on the market, straight from the MLS, and each one whose asking price is reduced. Sign up on this page, or call or text (786) 914-1017 and we set it up for you.
Request a Private Penthouse Review
Tell a licensed BreakThru Realty broker which penthouse interests you. We pull the building's penthouse sales and active listings, its budget, reserve study, milestone inspection and assessment status, and the top floor residences listed under plain unit numbers, then recommend an offer price and terms. Nothing reaches the listing broker until you decide to offer. Call or text (786) 914-1017 or email sales@breakthrurealty.com.
What happens next: a broker replies within one business day with the building comparison and the documents to read, and books a private showing at a time that suits you.
Own a Penthouse? Your Buyer May Already Be Working With BreakThru Realty
Penthouse buyers ask for specific things: a building, a line, a terrace, a view, a floor. When a buyer working with BreakThru Realty tells us what they want, we keep a record of it. Before your penthouse is photographed or announced, a broker checks it against those requirements and tells you privately whether anything might fit. If no buyer on file fits, the marketing plan that reaches the rest of the market follows, built around your objectives. See if we already have your buyer before you list.
St. Lucie County Penthouses: Questions
- How many penthouses are for sale in St. Lucie County?
- 12 penthouses are for sale in St. Lucie County on the MLS as of October 30, 2026, with a median asking price of $479,950 and a median asking price of $241 per square foot. 0 came on the market in the last seven days and 5 have a reduced asking price. The list updates through the day as the MLS changes.
- What counts as a penthouse in St. Lucie County on this page?
- A condominium for sale in St. Lucie County whose MLS unit number marks it as a penthouse: PH, UPH, LPH or the word itself. The MLS has no penthouse field, so the label is the listing agent's, and a top floor residence entered under a plain unit number does not appear here. Ask us about a building and we check its upper floors by hand.
- How do I schedule a private showing of a penthouse in St. Lucie County?
- Ask us for the one you want to see. Penthouse showings are by appointment, usually with proof of funds or a lender letter, and some buildings ask for notice a day ahead. A BreakThru Realty broker books the showing and sends the building's recent penthouse sales and its association documents before you walk through.
To request a tour, call (786) 914-1017 or email sales@breakthrurealty.com.
- How do I compare a St. Lucie County penthouse with the rest of its building?
- Start with the penthouses that have sold in the same building and in the towers beside it, adjusted for the floor, the terrace, the view line and the condition, then read the association budget, the reserve study, the milestone inspection and any assessment. A price in line with those sales is a fair price; one far above them leaves room to negotiate. Request a private penthouse review on this page and a broker pulls the sales and reads the documents with you before you offer.