Biscayne Key Estates
Homes for Sale in Key Biscayne, FL
True comps, carrying-cost math, and listings before the portals.
Market Heat
Photo via MIAMI MLS
As of September 2026, Biscayne Key Estates in Key Biscayne, FL has 8 homes for sale and 2 pending, asking from $3,800,000 to $9,200,000 (median $5,539,000). Over the 12 months ending 2026-09-12, 10 recorded sales closed at a median of $3,487,500, $1,280 per square foot, a median 171 days on market, sellers accepting 91% of original asking (+3% versus the prior year). Homes listed or recently sold were built 1951–2024. At the median price and Miami-Dade County's FY2025-26 rate of 17.59 mills, annual property tax runs about $61,360 ($60,640 with the full homestead exemption).
Homes For Sale Right Now in Biscayne Key Estates
Live MLS inventory for Biscayne Key Estates. 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 Key Estates listings as of 2026-09-12, 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 2012 through 2026. Tap any home to ask about it.
Biscayne Key Estates trades in a narrow, high-value lane — a median price of $3,487,500 and a median $1,279.84 per square foot put this community well above typical Miami-Dade comparables. At this price point, the number of buyers who can transact is small, and that scarcity, not marketing, is what sets the pace here.
The pace is slow by design. A median 180.5 days on market and a market heat score of 38 point to a deliberate, low-urgency environment where sellers who price accurately and buyers who do their diligence carefully both come out ahead. The 5.4% year-over-year gain shows the price floor holding even as deals take longer to close — this is a market rewarding patience over speed on both sides of the table.
Biscayne Key Estates right now
🟡 Still climbing. The trailing-12-month median ($3.49M) is up 3.2% from the prior 12 months ($3.38M). With about a dozen sales a year, a single closing can swing this number, so read the level and the decade, not one year's move.Momentum Research, record-level MIAMI MLS closed sales, 12-month windows ending September 12. Confidence: Medium (10 and 16 sales in the two windows).
What's unique here: the median sale price is about 6x the typical Miami-Dade County sale ($3.49M vs $555K, trailing 12 months, MIAMI MLS records).
Jump to: Price history & scorecard · Homes for sale · Schools · FAQ
Updated September 12, 2026 · Live data: MIAMI MLS, refreshed twice daily · MLS facts carry their source; interpretation lines are Momentum Research · Data sources & freshness
The 60-Second Overview
Biscayne Key Estates market snapshot (as of September 12, 2026): the median sale price is about $3.49M ($1280 per sq ft over the trailing 12 months of closed sales), and a median 172 days on market for closed sales. The trailing-12-month median is up 3% from the prior 12 months, computed from record-level MIAMI MLS closed sales (10 closings in the current window).
Biscayne Key Estates sits at the upper end of the Miami-Dade luxury market, where price per square foot and days on market both signal a specialized, low-volume segment rather than a fast-turning neighborhood.
The setting & the homes.
Aerial and on-site photos of Biscayne Key Estates. Swipe to explore the community.
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Biscayne Key EstatesPhotos from MIAMI MLS listings in Biscayne Key Estates; content deemed reliable but not guaranteed.
Who Biscayne Key Estates is best for.
Best for
- Buyers purchasing at the upper end of the Miami-Dade market who can accommodate an extended closing timeline.
- Sellers with a well-conditioned, accurately priced property willing to market through a multi-month sales cycle.
- Buyers comparing price-per-square-foot across a small pool of high-value listings rather than a broad market.
Probably not for
- Buyers who need to close within a fast, fixed window.
- Sellers expecting rapid turnover based on typical market-wide days-on-market figures.
- Buyers relying on a large set of recent comparables — the closing count here is limited.
Price History: What Homes Here Have Actually Sold For
Median sale price over the trailing 12 months ending September 12 of each year, from record-level MIAMI MLS closed sales. Same methodology as every appreciation figure on this page: the 2026 point ($3.49M) IS the median in the snapshot above, and the move from 2025 ($3.38M) IS the +3.2% one-year change.
Windows contain 0 to 32 sales each (10 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 2012 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.
20% of homes for sale in Biscayne Key Estates 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 (2026-09-12).
BISCAYNE KEY ESTATES Market Scorecard
BISCAYNE KEY ESTATES is currently a thin data market. Limited supply, a median asking price of $5,478,000, and homes go under contract in about 64 days.
Typical home value in the 33149 ZIP is $1,692,135, about 97.2% above the Florida norm (Zillow Home Value Index).
Go deeper: ZIP market scorecard · county scorecard · true cost calculator · affordability calculator.
Live data: realMLS, refreshed twice daily. Typical value: Zillow Research. Market metrics only; these describe homes for sale and recent sales, not residents.
The Biscayne Key Estates buying strategy.
If we were buying in Biscayne Key Estates 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 Key Estates.
Price Held, Pace Stretched
With only about a dozen closings feeding the current snapshot, this is a thin market — every sale carries more weight in shaping the median, and comparables should be read individually rather than trended casually. The $1,279.84 per-square-foot figure reflects the premium nature of the product here, but with that few transactions, condition and specific lot or view characteristics can swing outcomes meaningfully.
A median 180.5 days on market is the standout number. That is a market where offers get negotiated, financing and inspection periods run their full course, and pricing that misses the mark sits — sometimes for months — before it corrects. The market heat score of 38 confirms it: this is not a bidding-war environment, it is a considered-purchase environment.
The location and the amenities are priced into every listing in Biscayne Key Estates. The deal is won or lost on condition, the comps, and the renovation math.
Why work with Momentum here
A market with a thin transaction count and a six-month-plus median timeline rewards precise pricing and patient negotiation over volume-based tactics. We track the individual closings that move this median, not just the headline number, so sellers price defensibly and buyers know what leverage they actually have before they write an offer.
Biscayne Key Estates 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 Key Estates 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 Key Estates sales matched to your home.
Price it to the comps and condition, not an automated estimate.
If you are thinking about selling in Biscayne Key Estates, 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 Key Estates home worth?
Get a no-obligation home value based on real comparable sales in Biscayne Key Estates, 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 Key Estates?
How long do homes in Biscayne Key Estates take to sell?
Who is the best real estate agent for Biscayne Key Estates?
How do I find a top Key Biscayne real estate agent who knows Biscayne Key Estates?
Can Momentum Realty connect me with an agent for Biscayne Key Estates?
Should you buy in Biscayne Key Estates?
An honest fit check. We will tell you when it is not your community.
Nearby Communities
Explore more neighborhoods near Biscayne Key Estates with Momentum Realty’s local guides.
Data sources & freshness
| Live listings | MIAMI MLS, refreshed twice daily (last: September 12, 2026) |
| Community market stats | MIAMI MLS closed sales, 12-month windows ending September 12, 2026 |
| Under-contract shares | MIAMI MLS records, as of 2026-09-08 |
| Historical depth | Closed-sale records back to 2012 (120 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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