Biscayne Island
Homes for Sale in Miami, FL
All 4,610 homes for sale in Miami, FL · median $518,425 · Miami-Dade County homes for sale
True comps, carrying-cost math, and listings before the portals.
Photo via MIAMI MLS
As of October 2026, Biscayne Isl in Miami, FL has 1 home for sale. Over the 12 months ending 2026-09-20, 3 recorded sales closed at a median of $10,450,000, $2,625 per square foot, a median 175 days on market, sellers accepting 85% of original asking. At the median price and Miami-Dade County's FY2025-26 rate of 17.59 mills, annual property tax runs about $183,850 ($183,140 with the full homestead exemption).
| Location | Miami, Miami-Dade County, FL · ZIP 33139 |
|---|---|
| Sale prices, last 12 months | $10,450,000 median across 3 closed sales · $2625 per sq ft |
| Days on market (closed sales) | 175 median |
| For sale right now | 1 active, 0 pending · median asking $25,000,000 |
Data as of September 20, 2026. Based on information from the Southeast Florida Multiple Listing Service (SEFMLS) or from MIAMI Association of REALTORS(R) for the period 2018 through 2026. Market figures describe homes, not residents. Cite as: Momentum Realty, “BISCAYNE ISL key facts,” movewithmomentum.com/neighborhoods/biscayne-isl, data as of September 20, 2026.
Biscayne Island trades on a small number of transactions, and that thinness matters as much as any single figure. With only a handful of closings in the current window, the median price of $10,450,000 and median price per square foot near $2,625 describe a market of individual estates, not a graded curve of comparable homes. Each sale here is closer to its own event than a data point in a trend line.
A median days-on-market of 175 reflects deliberate, patient positioning rather than a slow market in the conventional sense. At this price tier, sellers are not chasing offers, and buyers who move quickly with clean terms are the ones who get taken seriously. Pricing and timeline both reward preparation over speed.
The 60-Second Overview
Biscayne Island market snapshot (as of September 20, 2026): the median sale price is about $10.45M ($2625 per sq ft over the trailing 12 months of closed sales), and a median 175 days on market for closed sales.
In ZIP 33139 (Miami), 697 homes closed in the last 12 months at a median of $800K ($765/sq ft), up 2.1% year over year, with a median 95 days on market. Right now 495 active and 79 pending listings — a buyer's market. See the live ZIP 33139 housing market and the Miami-Dade County market.
MIAMI REALTORS sales records identify 26 homes in BISCAYNE Island that have changed hands since 2006, built between 1938 and 2021 (median 1952), with a median living area of about 3,312 sq ft and a typical 4-bedroom, 4-bath layout; 92% are single-family homes. Source: MIAMI REALTORS closed-sale history compiled by Momentum Research; counts reflect homes with a recorded MLS sale, not every home in the community.
Biscayne Island's numbers come from a small pool of ultra-high-end closings, so the median price of $10,450,000 should be read as a signal of the island's tier rather than a tight, predictable range.
Who Biscayne Island is best for.
Best for
- Buyers purchasing a single, specific waterfront estate rather than comparing a range of similarly priced homes
- Buyers with the patience to negotiate on a 175-day-plus timeline and the liquidity to close without financing contingencies slowing the process
- Buyers who want a broker to independently verify pricing against thin comparable data rather than accept a generic estimate
Probably not for
- Buyers who need a tight, predictable price range to plan a budget
- Buyers expecting a fast closing timeline typical of higher-volume markets
- Buyers who want documented community amenities as a primary decision factor without direct verification
Price History: What Homes Here Have Actually Sold For
Median sale price over the trailing 12 months ending September 20 of each year, from record-level MIAMI MLS closed sales. Same methodology as every appreciation figure on this page: the 2026 point ($10.45M) IS the median in the snapshot above.
Windows contain 0 to 5 sales each (3 in the current window); every figure carries its sample size, and thin markets swing on single closings. Based on information from the Southeast Florida Multiple Listing Service (SEFMLS) or from MIAMI Association of REALTORS(R) for the period 2018 through 2026. Deemed reliable but not guaranteed.
The real cost & risk here
Before the list price, the Florida math the portals skip. These are Miami-Dade County typicals — your exact home, flood zone, and insurance quote will vary, so verify each before you offer.
Check it for your address: look up your flood zone (FEMA) · insurance by county · true-cost calculator · Miami-Dade County scorecard.
County typicals from Momentum’s Florida housing data (Zillow & Realtor.com aggregates, Census, FRED), updated monthly; insurance modeled. Flood zone is property-specific — always confirm via FEMA.
14% of homes for sale in ZIP 33139 are already under contract (under contract ÷ under contract + active listings) — a read on how much of the available inventory buyers have already claimed. Source: MLS data (2026-09-21).
Biscayne Island Market Scorecard
Biscayne Island is currently a balanced market., a median asking price of $25,000,000, and homes go under contract in about 227 days.
Go deeper: ZIP market scorecard · county scorecard · true cost calculator · affordability calculator.
Live data: MIAMI MLS, refreshed twice daily. Market metrics only; these describe homes for sale and recent sales, not residents.
Homes For Sale Right Now in Biscayne Island
Live MLS inventory for Biscayne Island. Every active listing, what is under contract right now, and the last 12 months of closed sales, refreshed twice a day. Closed comps beat an algorithm's guess every time.
Active and pending Biscayne Island listings as of 2026-08-27, priced high to low. Based on information from the Southeast Florida Multiple Listing Service (SEFMLS) or from MIAMI Association of REALTORS(R) for the period 2018 through 2026. Tap any home to ask about it.
The Biscayne Island buying strategy.
If we were buying in Biscayne Island today, this is the order of operations we would run for our clients.
Underwrite the condition first. Price the roof, HVAC, and systems honestly before judging any list price; condition swings value here more than square footage alone.
Match the home to real comps. Recent sales of similar condition and lot, not the asking price, tell you what a home is worth.
Move deliberately, not desperately. Neither side has a decisive edge, so a well-prepared, fairly-priced offer wins without overpaying.
Line up financing and inspection early. A pre-approval and an inspection plan let you act fast and negotiate from evidence.
Keep an agent in your corner. The listing agent works for the seller; we represent you and prepare a hand-built valuation before any offer in Biscayne Island.
A Market Measured in Estates, Not Averages
With only three closings feeding the current snapshot, Biscayne Island does not behave like a conventional neighborhood market. There is no meaningful spread of price points to study, no cluster of comparable listings to lean on for negotiation — just a small number of individual sales, each shaped by its own lot, structure, and seller motivation. That is the nature of an island of this scale: transaction volume will always be low, and every closing carries outsized weight in the data.
The current MLS listings feeding this snapshot do not identify specific community amenities, so any claims about clubhouses, gated access, or shared recreational facilities should be verified directly against the listing or HOA documents rather than assumed from market averages. Buyers should treat the price-per-square-foot figure as a broad reference point for construction and finish level, not a formula for valuing a specific property.
The location and the amenities are priced into every listing in Biscayne Island. The deal is won or lost on condition, the comps, and the renovation math.
Why work with Momentum here
In a market this thin, the comparables you use — and the ones you exclude — determine whether a number is a starting point or a mistake. We pull the underlying sales ourselves, check them against lot size, condition, and timing, and tell you plainly when the data is too sparse to support a confident number without direct inspection of the specific property.
Biscayne Island in 15 seconds.
HOA, CDD & Fees
- HOA status not on record. Verify any dues before you offer
- Any club/amenity membership is billed separately
Confirm the current HOA dues, exactly what they cover, and any CDD bond or special assessment for a specific address before you offer.
Tools for a Biscayne Island buy.
Free calculators to pressure-test the real cost before you tour.
Selling here is won on condition and pricing to real comps, not an automated estimate. The right number comes from closed Biscayne Island sales matched to your home.
Price it to the comps and condition, not an automated estimate.
If you are thinking about selling in Biscayne Island, the right list price comes from recent comparable sales matched to your home's condition and location, not an automated estimate.
What is your Biscayne Island home worth?
Get a no-obligation home value based on real comparable sales in Biscayne Island, not an automated guess. Tell us about your home and we will personally prepare your numbers and a pricing strategy. No obligation, no spam.
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Frequently Asked Questions
What is the median home price in Biscayne Island?
How long do homes in Biscayne Island take to sell?
Who is the best real estate agent for Biscayne Island?
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Can Momentum Realty connect me with an agent for Biscayne Island?
Where is Biscayne Island, and what county is it in?
Should you buy in Biscayne Island?
An honest fit check. We will tell you when it is not your community.
Data sources & freshness
| Live listings | MIAMI MLS, refreshed twice daily (last: August 27, 2026) |
| Community market stats | MIAMI MLS closed sales, 12-month windows ending September 20, 2026 |
| Under-contract shares | MIAMI MLS records, as of 2026-09-20 |
| Historical depth | Closed-sale records back to 2018 (19 transactions analyzed) |
Verify the primary sources yourself: Florida DOR · U.S. Census · FEMA flood maps · Citizens Property Insurance.
Momentum Research figures are our own analysis of MIAMI MLS records; MLS data is deemed reliable but not guaranteed. Methodology: how Momentum market scores are computed. Market metrics describe homes for sale and recent sales, not residents.
Own a home here?
You just read the data. Now see what your home is worth.
The numbers on this page move markets in the aggregate. The number that matters to you is what a buyer pays for your address. Momentum sells for 1.25% above the MIAMI MLS member average and 8 days faster, and we’ll price yours against live local comps.
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See how BISCAYNE ISL fits the bigger picture — live prices, inventory, and Momentum Scores:
More on Biscayne Island
- Home values · What homes in Biscayne Island actually sell for
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