Key Biscayne
Housing Market
Median sale price $1,480,000, with homes going under contract in about 79 days, 34 homes on the market.
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Housing Market Analyst
Inventory sits at 11.7 months of supply — heavy by the 3-to-6-month balanced benchmark, and 18% of listed homes are already under contract. sellers are still collecting 94.3% of asking. Taken together, the data leans toward buyers — leverage is real for those ready to use it.
Who has leverage right now
Leverage scores are derived from the Momentum Score (supply, demand, speed, pricing power, and trend). Right now the data favors buyers.
- Inventory — building over the tracked window; watch whether that holds through the season.
- Negotiating power — buyers gain ground as 18% of inventory sits under contract.
- Mortgage sensitivity — at 7.3× income, this market is highly sensitive to rate moves; rate relief tends to show up in demand here quickly.
Derived from current Key Biscayne data, not a prediction or guarantee. Markets move; talk to an agent before acting on any single reading.
Where Key Biscayne is hot — and where it isn't
Each dot is a community (8 shown, sized by sales volume rank). Click any dot to open its full neighborhood guide.
The read on Key Biscayne
The median sale price across Key Biscayne currently stands at $1,480,000. Buyers are paying a median of $939 per square foot. The typical home goes under contract in about 79 days. Homes are selling for about 94.3% of their original asking price.
There are 34 active listings on the market, with 6 more already under contract. With 35 closed sales over the trailing 12 months (34 listings divided by 35 / 12), that works out to 11.7 months of supply — a buyer-leaning market by the 3-to-6-month balanced band.
Key Biscayne prices sit above the Miami-Dade County median by roughly 179%. Zillow's home value index for Miami-Dade County stands at $523,239. About 16% of listings county-wide have taken a price cut — a useful gauge of seller flexibility.
Weighing supply, demand, speed, pricing power, and trend together, the Momentum Score for Key Biscayne is 30 of 100 — soft market territory. This page recalculates every day as new MLS data lands, so the numbers above reflect the market as of November 12, 2026.
Where the market is heading
Home value trend · Miami-Dade County (Zillow ZHVI)
For-sale inventory · county (Zillow)
Daily active vs pending · Miami-Dade County (MLS)
Median price · daily recalculation
What’s driving Key Biscayne
Top inbound states: NY, CA, TX, NJ. Movers arriving report ~$127,200 average income. Source: IRS SOI county-to-county migration, 2022-2023
137,709 Citizens personal-lines policies in Miami-Dade County; average premium $3,351 before the 2026 change, $3,064 after (-8.6%). Citizens is the state-backed insurer of last resort; budget insurance into any Miami-Dade purchase. Source: Citizens Property Insurance Corporation, 2026 Approved Rate Changes by County (ALL PERSONAL LINES COMBINED table).
2,666 single-family · 13,869 multi-family · 6.0 per 1,000 residents. Future supply pressure starts here. Source: U.S. Census Bureau, Building Permits Survey, 2025
The calls we’re making from today’s data
Buyers: ask for concessions — rate buydowns and repair credits are back on the table. Sellers: presentation and the first two weekends decide your outcome; price accordingly.
Generated from today’s data by Momentum’s analysis engine and reviewed on a rolling basis by our broker team.
How it stacks up across Miami-Dade County
| Market | Median | Active | Score | |
|---|---|---|---|---|
| Key Biscayne ← this page | $1.48M | 34 | 30 | |
| Miami | $550K | 2,519 | — | Open → |
| Miami Beach | $660K | 521 | — | Open → |
| Sunny Isles Beach | $615K | 451 | — | Open → |
| Aventura | $485K | 428 | — | Open → |
| Homestead | $440K | 425 | — | Open → |
Neighborhoods on the move
| TOWERS OF KEY BISCAYNE COKey Biscayne | $1.48M | 4 |
| TOWERS OF KEY BISCAYNE COKey Biscayne | $1.48M | 53 days |
Key Biscayne ZIP codes
Most active communities
More on Key Biscayne
Put this data to work
The questions people actually ask
Should I buy a house in Key Biscayne right now?
The data says conditions currently favor buyers in Key Biscayne — the Momentum Score reads 30/100 with 11.7 months of supply. For buyers that means preparation over hesitation: well-priced homes still move fast, but there is more room to negotiate than a year ago. The right timing always depends on your rate, your equity, and how long you plan to stay — not just the market.
Which Key Biscayne neighborhoods are most competitive?
Measured by speed of sale, the fastest-moving tracked communities right now are TOWERS OF KEY BISCAYNE CO (53 days) — homes there go under contract well ahead of the market-wide pace of 79 days.
How does Key Biscayne compare to the rest of Miami-Dade County?
Key Biscayne's median of $1,480,000 runs 179% above the county-wide median of $530,000, and homes here take 79 days to go under contract versus 70 county-wide.
Key Biscayne housing market FAQ
How is the housing market in Key Biscayne right now?
As of November 12, 2026, the Key Biscayne housing market favors buyers: the median sale price is $1,480,000, 34 homes are for sale against 35 sales in the last 12 months, which is 11.7 months of supply, and the typical home goes under contract in about 79 days.
How much is a house in Key Biscayne?
The median home sold for $1,480,000 in Key Biscayne over the last 12 months, about $939 per square foot; asking prices on the 34 current listings run from well below to well above that, and the community pages linked below show what each neighborhood actually sells for.
Is it a good time to sell a house in Key Biscayne?
By the numbers, sellers in Key Biscayne are getting 94.3% of asking price and going under contract in about 79 days with 11.7 months of supply. Under three months of supply generally favors sellers, three to six is balanced, and over six favors buyers. Whether it is a good time for you depends on what you paid and where you are going next, which is a conversation with an agent, not a chart.
What is the median home price in Key Biscayne?
The median sale price in Key Biscayne is currently $1,480,000, based on MLS sales data updated November 12, 2026.
Is Key Biscayne a buyer's or seller's market right now?
The data currently favors buyers. Key Biscayne scores 30 of 100 on the Momentum Score, with 11.7 months of housing supply. Conditions change; this page updates daily.
How long do homes take to sell in Key Biscayne?
The typical home in Key Biscayne goes under contract in about 79 days, per current MLS data.
How many homes are for sale in Key Biscayne?
There are approximately 34 active listings in Key Biscayne as of November 12, 2026.
Momentum agents use this intelligence every day to price listings and write winning offers across Key Biscayne. Talk through what the numbers mean for your move.
Every number on this page is computed directly from licensed Florida MLS feeds, recorded public sales, Zillow Research, and U.S. Census data — nothing is manually adjusted or estimated by hand. Medians use recorded closed sales; supply figures use the MLS listing counts from the last data refresh (date below); the Momentum Score methodology is summarized .
Analyst oversight: Jon Brooks — Co-Founder, Momentum Realty · CEO, Momentum Research · Housing Market Analyst · methodology reviewed quarterly · Last data refresh: November 12, 2026 at 5:37 PM ET
Statistics on this page are computed automatically from licensed MLS feeds and public data sources (Zillow Research, U.S. Census Bureau) and summarized without manual review. Figures are estimates based on recent recorded activity, are deemed reliable but not guaranteed, and should be verified with a licensed agent before making decisions. This page does not constitute an appraisal or an automated valuation of any specific property. Momentum Realty is licensed in Florida and Georgia. Equal Housing Opportunity.
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