Homes for sale inKey Biscayne, Florida
Island living on Biscayne Bay, minutes from downtown
138
Homes for sale
$2,775,000
Median list price
$1,619
Avg price / sqft
62
Median days on market
Key Biscayne sits at the end of the Rickenbacker Causeway, a barrier island in Miami-Dade County where the Atlantic meets Biscayne Bay and the pace slows down. It's a place built around the water — the waterfront homes and bay-view condos that line the island draw families, boaters and second-home owners who want beach-town calm with Miami minutes away. State parks bookend the island, and the village keeps a tight, walkable, low-rise feel that's rare this close to downtown.
The market here is firmly luxury: the median list price is $2,775,000 and $/sqft averages $1,619, with 114 of 138 active listings priced above $1M. Condominiums dominate the mix at 90 of the active inventory, so most buyers are choosing between high-rise townhomes & condos and a smaller pool of single-family houses. Homes take a median 62 days to sell and sellers are getting about 95% of asking, so there's room to negotiate — and you can always check what's just reduced or set a filter to browse by price.
Key Biscayne is in Miami-Dade County, Florida.
Quick facts
$429,000 – $237M price range
1,950 sqft median home
$8,500/mo median rent
Living in Key Biscayne
Key Biscayne is a barrier island at the southern end of the Rickenbacker Causeway, separated from mainland Miami by Biscayne Bay. It's a place defined by water on every side, with state parkland bookending the village and a tight, low-rise downtown that keeps the island feeling more like a beach town than a big-city neighborhood. The single causeway in and out gives it a self-contained, community-first character that's unusual this close to downtown Miami.
The island suits a specific buyer: families who want walkability and water access, boaters, and second-home owners who value quiet without giving up proximity to the city. Days revolve around the beach, the bay and the parks rather than nightlife, and the pace is noticeably slower than Brickell or South Beach a few miles away. It rewards people who want to put down roots on a small island where neighbors recognize each other.
Because it's geographically small and largely built out, Key Biscayne has a fixed supply of homes and a premium attached to living here. That scarcity is part of the appeal and part of the price. Buyers come for the combination of resort-style surroundings, strong schools and a short hop to one of the country's biggest employment centers.
Neighborhoods and communities in Key Biscayne
The island splits broadly between single-family enclaves and a lineup of bayfront and oceanfront condominium towers. Single-family pockets such as Biscayne Key Estates and Tropical Isle Homes Sub 4 appeal to buyers who want a house and yard, while Key Colony No 1 is one of the island's larger established communities. These areas anchor the 37 single-family homes currently on the market.
On the condo side, towers like Commodore Club South, Oceana Key Biscayne, The Emeraldbay at Key Colony, and the Towers of Key Biscayne line the water and account for the bulk of inventory. With 90 condominiums active, the choice among townhomes & condos is where most buyers spend their time, comparing views, amenities and HOA structures from one building to the next.
Water frontage is the common thread across both types — 72 of the 138 active listings are waterfront, and many non-waterfront units still offer bay or ocean outlooks. If a view matters most, filter for homes with water views; if you want outdoor space of your own, the island's homes with a pool are a smaller segment at 11 active listings.
Homes for sale in Key Biscayne: prices and housing
This is a luxury market by almost any measure. The median list price is $2,775,000, the average is $1,619 per square foot, and 114 of the 138 active listings are priced above $1M. Listings range from an entry point around $429,000 up to trophy properties at the very top of the market, so the spread is wide even if the median sits high. Over the past 12 months, 199 homes changed hands at a median sold price of $1,700,000.
The housing mix leans heavily toward condominiums — 90 of the active listings — followed by 37 single-family residences, 7 townhouses and 4 stock cooperatives. The median home size is about 1,950 square feet, which reflects how condo-dominated the supply is. New construction is limited, with just 7 active listings, since the island is largely built out and low-rise; most new inventory arrives through redevelopment rather than new subdivisions. You can review the current luxury homes ($1m+) and new construction segments to see what's trading now.
On carrying costs, property taxes run a median of roughly $20,412 per year, consistent with the island's values. HOA dues aren't consistently reported in the data, but they're a critical factor given how many homes are condos — reserves, amenity costs and any special assessments should be reviewed carefully before you offer. Homes sit a median 62 days on market and sellers net about 95% of asking, which signals a market where well-prepared buyers can negotiate rather than one that forces instant decisions.
Schools in Key Biscayne
Key Biscayne is served by Miami-Dade County Public Schools. Homes on the island are most commonly assigned to Key Biscayne K-8 and Northport K-8, with Coral Gables Preparatory Academy and Miami Edison appearing among the zoned options depending on grade level and address. These are the assignments that show up most often in the current data for island homes.
School zoning in Miami-Dade can vary by address and can change between enrollment years, so never assume an assignment from a listing alone. Confirm the exact zoned schools for any specific property directly with the district before you make an offer, especially if a particular school is a priority for your family.
Because the island is small, families often weigh the on-island K-8 options against programs on the mainland that are a short causeway drive away. Your agent can help you line up a specific address against its current zoning so there are no surprises after closing.
Getting around Key Biscayne
The defining feature of getting around is the Rickenbacker Causeway — the single road that connects the island to mainland Miami. It links Key Biscayne to the Brickell and downtown areas quickly in good traffic, and from there the rest of Miami-Dade opens up via the region's main highways. Specific drive times aren't reported in the current data, so budget for peak-hour congestion on the causeway when planning a commute.
Within the island itself, distances are short and much of the village is walkable or bikeable, which is part of why residents value the low-rise, community scale. Many trips — to the beach, the parks, local shops — can be done without a long drive. That compact footprint is a genuine lifestyle perk once you're on the island.
The flip side of a single access point is that everyone shares the same road on and off. It keeps through-traffic out and the island quiet, but it also means your schedule has to account for causeway conditions. Buyers who commute daily to the mainland should test-drive the route at their actual travel times before committing.
Is Key Biscayne a good place to live?
For the right buyer, Key Biscayne delivers something few places can: a quiet, walkable island with beach and bay access, state parks at both ends, and downtown Miami a short causeway drive away. The low-rise village feel, the water-focused lifestyle and the strong sense of community are the core of the appeal. It's especially well suited to boaters, families drawn to the on-island schools, and second-home owners who want calm without isolation.
The honest trade-off is cost and inventory. With a median list price of $2,775,000, an average of $1,619 per square foot, and 114 of 138 active listings above $1M, this is a premium market with limited supply. The condo-heavy mix means HOA structures and property taxes — a median around $20,412 a year — deserve close scrutiny, and the single-causeway access shapes daily life in both good and challenging ways.
That said, the market isn't frantic: homes take a median 62 days to sell and close near 95% of asking, so buyers who prepare can negotiate rather than overpay. If the island lifestyle and price point align with your goals, Key Biscayne offers a rare combination of resort-like living and city access. Browse what's just reduced and tour a few open houses this week to get a feel for the value at each price point.
Fresh on the market
Newest homes in Key Biscayne
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Property features
The numbers that matter
The Key Biscayne market
199
Sold, last 12 months
$1,700,000
Median sold price
95%
Sale-to-list ratio
What sellers actually get vs asking
64 days
Median time to sell
Key Biscayne vs Miami-Dade County
Median list price
Price per sqft
Days on market
Live Stellar MLS data — listings and closed sales in Key Biscayne, FL. Rolling medians smooth single-month swings in thin markets.
For the school run
School zones with homes for sale
Elementary
Assigned schools as reported on active MLS listings — always verify zoning with the district.
Beyond the listings
Living in Key Biscayne
An island built on water
72 of the 138 active listings are waterfront, reflecting an island where bay and ocean frontage define the market.
Condo-driven inventory
Condominiums make up 90 of the active listings, so most buyers are comparing high-rise units rather than houses.
Firmly a luxury market
With 114 active listings above $1M and a $2,775,000 median list price, this is one of South Florida's priciest ZIP codes.
Room to negotiate
Homes sit a median 62 days on market and close around 95% of asking, giving prepared buyers leverage.
Minutes from downtown Miami
The Rickenbacker Causeway connects the island directly to the mainland, pairing beach-town quiet with big-city access.
Population
14,791
Median age
42.2
Median income
$181,505
Median home value
$1,575,300
What people here are into
Lifestyles
Top 4% in the U.S.Wealth Signaling
Interested in the finer things life has to offer, this population wants to display their lifestyle by discussing luxury products. Often references jewelry, cars, and home features.
Relationships
Top 12% in the U.S.Networking
Driven to succeed in the business world, this population seeks to progress in their career through networking happy hours, summits, and connecting with other professionals online.
Entertainment
Top 15% in the U.S.Party Life
The party don't stop until the sun comes up. Loud music, crowds, and shots are a recipe for a great night out for these people.
Beliefs
Top 18% in the U.S.Mindfulness & Spirituality
Seeking peace and well-being through meditation, gratitude and spirituality.
Active
Yoga Advocates
Improving flexibility, strength, and overall well-being is the yogi's aim. This population is looking for the right community, instruction, and accessories.
Culture
Sites to See
This population finds the most beautiful sites just by looking up. Sunrise, sunset or sometime in between, these people love to marvel at man-made and natural wonders.
What it really costs
Owning here
Owning the median Key Biscayne home
≈ $16,532/mo
$2,775,000 median · 20% down · 30-yr fixed at 6.9% · taxes/HOA from live listing data · insurance is a Florida estimate.
0%
In a FEMA flood zone
Most homes here sit outside high-risk zones
$8,500/mo
Median rent
161 homes for rent right now
Straight answers
Key Biscayne real estate FAQs
Is Key Biscayne a good place to live?+
It suits buyers who want a quiet, walkable island with beach and bay access and easy reach to Miami. The low-rise village character, state parks at both ends, and water-focused lifestyle are the draw. Trade-offs are cost and limited inventory — only 138 homes are active right now.
Is Key Biscayne expensive?+
Yes — it's one of the priciest markets in South Florida, with a median list price of $2,775,000 and an average $1,619 per square foot. The vast majority of inventory, 114 of 138 active listings, is priced above $1M. If you're watching a tighter budget, it helps to browse by price since listings do start as low as $429,000.
What do homes cost in Key Biscayne?+
Active listings range from $429,000 up to extraordinary high-end estates, with a median list price of $2,775,000. Over the last 12 months, 199 homes sold at a median sold price of $1,700,000. The median home size is about 1,950 square feet, reflecting the island's condo-heavy inventory.
How is the Key Biscayne housing market?+
It's an active luxury market with 138 listings and 199 sales over the past year. Homes take a median 62 days to sell and sellers collect about 95% of their asking price, so buyers who do their homework have negotiating room. You can also track open houses this week to see what's new.
What about HOA fees and property taxes?+
Property taxes run a median of about $20,412 per year, in line with the island's high values. HOA data isn't consistently reported here, but it matters a lot given that 90 of the active listings are condominiums — monthly dues, reserves and assessments are a key line item to review with your agent before you offer.
What schools serve Key Biscayne?+
Homes here are commonly assigned to schools including Key Biscayne K-8 and Northport K-8, with Coral Gables Preparatory Academy and Miami Edison among the zoned options for older grades. School zones can shift block to block, so confirm the exact assignment for any specific address with Miami-Dade County Public Schools before you buy.
Is there new construction in Key Biscayne?+
There is a small amount — 7 of the active listings are new construction, which is limited by the island's built-out, low-rise character. Most new inventory comes as redevelopment or newer condo units rather than large subdivisions. Browse current new construction to see what's available.
How is the commute from Key Biscayne?+
The island connects to the mainland by the Rickenbacker Causeway, putting downtown Miami, Brickell and Coral Gables within a short drive. There's only one road on and off the island, so timing around peak traffic matters. Many buyers value the single-access layout for the quiet, low-traffic feel it creates once you're home.
Keep exploring
Nearby areas
IDX information is provided exclusively for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data is deemed reliable but is not guaranteed accurate by Stellar MLS. Market statistics are computed from listing and sold data and change as the market moves.
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