BreakThru Realty

Sell Your Home in Key Biscayne

You built this home's value. Your Key Biscayne selling strategy should reflect it.

Your Key Biscayne Buyer May Already Be Looking

BreakThru Realty works with hundreds of prequalified buyers searching for properties. Your home may be the one a buyer is waiting to find. Tell us about your property: we review recent Key Biscayne sales, discuss your goals and see whether your home fits what our buyers are looking for.

Find Out If Your Buyer Is Already Looking · Get My Key Biscayne Home Value

What you receive

  • A value range built from comparable Key Biscayne sales, with the reasoning
  • Whether a buyer already working with BreakThru Realty is looking for a property like yours
  • The plan that reaches the rest of the market if no buyer on file fits
  • An estimate of your selling costs and what you would keep after closing
  • Your timing, privacy and goals, worked through before anything is listed

A licensed broker checks your property against the buyers on file and the closed sales nearest it, then calls within one business day to talk it through. No fee, nothing listed and nothing shared until you decide.

Request Your Key Biscayne Buyer Match Review

Tell us the address, your name, how to reach you and when you would like to sell. A licensed broker checks your property against the buyers on file and the closed sales nearest it, then calls within one business day to talk it through. No fee, nothing listed and nothing shared until you decide. Need speed over price? Request a cash offer and we put both numbers side by side.

How We Sell Each Kind of Key Biscayne Home

Houses

A Key Biscayne house is priced from the closed sales on its own streets, adjusted for the lot, the condition, the roof age and the impact windows, the things a buyer's insurer prices first. We gather the permit history and the wind mitigation and four point reports before launch, so the buyer's lender and insurer find no surprises.

Waterfront homes

Water first, house second: the dock length, the depth at low tide, the bridges between your seawall and the inlet and the condition of the seawall set the price. We photograph the home from the water and the air, write the dock specifications into the remarks and reach the boaters on file, because that is how they search.

Condos

The association file sells the unit: the budget, the reserve study, the milestone inspection, any assessment and the leasing rules, assembled before the listing goes live. Pricing comes from the closings in your building and the buildings it competes with, line by line, not from a citywide median.

Luxury homes

Positioned privately before anything is announced: the buyer profile, a check against the buyers already working with us, private previews where the MLS rules allow, then photography, film and the broker network. Showings by appointment for qualified buyers only, and a weekly report to you.

Key Biscayne Market at a Glance

Updated November 7, 2026 from BeachesMLS.

Newest Key Biscayne Homes for Sale

The 30 newest homes, condos and townhomes on the market in Key Biscayne, straight from BeachesMLS. The 30 listings on this page run from $419,000 to $19,750,000, with a median of $1,792,500, about $1,121 per square foot, and they have been listed a median of 20 days.

  • The communities with the most listings here are Key Colony (5), Biscayne Key Estates (3), Cape Fla Sub (2), Casa Del Mar (2) and Key Biscayne Vi (2), 14 of the 30; the others are spread across 14 more communities.
  • By type: 23 condos and 7 single-family homes.
  • Bedrooms run from studios to 7, a median of 2; they were built between 1964 and 2025, a median of 1979, and 5 in the last ten years.
  • 11 of the 30 have a pool, and 16 are on the water.

See every Key Biscayne home for sale with map and filters.

Single-family homesCondos & townhomes
Active listings36102
Median list price$7,774,500$1,550,000
Median list price per sq ft$1,981/sq ft$1,035/sq ft
Average days on market169 days127 days
Sold in the last 90 days833
Median sold price (90 days)$5,060,312$1,500,000
Sale price as % of list price95.1%94.6%
Months of inventory13.5 months9.3 months
Median sold price vs. a year ago+18.4%+16.3%

Source: BeachesMLS. Active listings as of November 7, 2026; sold figures cover closings in the last 90 days, compared with the same 90 days one year earlier. Not an appraisal. How these figures are calculated.

What Key Biscayne Homes Are Selling For

In the last 90 days the median single family home in Key Biscayne closed at $5,060,312, or $1,519 per square foot, and the median condo or townhome at $1,500,000 ($958 per square foot). Sellers achieved 95.1% of their asking price on the typical single family sale and 94.6% on the typical condo sale, and 10 sales closed in the last 30 days. Your home is not the median: waterfront, a pool, a renovated kitchen or a top floor view all move the number, which is what the valuation is for.

Is Now a Good Time to Sell in Key Biscayne?

143 homes and condos are competing for buyers in Key Biscayne today, 8 of them new this week, and 25 are already under contract. Single family homes have 13.5 months of inventory and condos 9.3 months, which makes the single family side a buyer's market. Homes that closed took 142 days on average to go under contract (condos 99 days). In a market with fewer than four months of supply, a correctly priced home draws multiple showings in its first two weeks; in a slower one, pricing and presentation decide whether it sells at all.

Selling a Home in Key Biscayne

Your Key Biscayne buyer may already be looking. BreakThru Realty works with hundreds of prequalified buyers searching for properties. Each one tells us the areas, the price range, the property type and the features they want, and we keep that on file. Before you list, a broker checks your home against those requests and prices it from recent MLS sales near it, and if no buyer on file fits, the plan reaches the rest of the market. A Key Biscayne home is priced by its water, its lot and its building as much as its square footage. For a house, lot size, elevation, canal or bay frontage, the dock and seawall, and whether it is original, renovated or new construction can separate two homes on the same street; for a condo, the building, floor, exposure, view and the association's finances do the same. Your buyers often compare Key Biscayne with Brickell, Coconut Grove and Miami Beach, so we price from the closed sales that match your home. Start with a free valuation built on recent MLS sales, ask for a full comparative market analysis, or request a guaranteed cash offer if you need a fast, as-is sale.

How to Choose a Listing Agent in Key Biscayne

Interview more than one, and ask each the same questions. Which recent Key Biscayne sales support the price they suggest, and can you see them? How will they market your particular home, and to which buyers? Who handles showings, offers and negotiation day to day? What does the listing agreement say about term, fees and cancellation, and who reviews the contract? Then choose the agent whose pricing you can check against closed sales, not the one with the highest number or the lowest fee. Experience with your type of home matters: a waterfront estate, a condo in a building with an assessment and a starter home in a gated community are sold to different buyers in different ways.

Selling a Luxury Waterfront Home in Key Biscayne

A waterfront sale in Key Biscayne is priced on the water first: ocean access and fixed bridges, dock length and water depth, the age and condition of the seawall, frontage, exposure and the view, then the house. Comparable sales are fewer and further apart than on dry lots, so the valuation reads the closed waterfront sales across the city, not the street. Marketing reaches the boating and out of state buyers who pay for that water, with photography that shows the dock and the approach, and showings and buyer qualification are handled with the discretion a high value home needs; a private, off market listing is an option we explain before you choose. The guides on selling a waterfront home and selling a luxury home go into the detail.

How BreakThru Realty Sells Your Home

First, the buyers already working with us: breakThru Realty works with hundreds of prequalified buyers searching for properties. A broker checks your home against what they have asked us to find before anything is announced. Then a written pricing analysis from the Key Biscayne sales that match your home, not a citywide average. Professional photography, video and floor plans, staging guidance, and a listing syndicated to every major portal and every BeachesMLS agent. Showing coordination, offer review and broker level negotiation through inspection, appraisal and closing. No upfront fees; the commission and the plan are agreed in writing before your home goes live.

Need to Sell Fast? A Guaranteed Cash Offer

Some homes deserve the open market and some sellers need certainty. Through Neighborhood Cash Buyers, BreakThru can deliver a written cash offer on your Key Biscayne home within 24 hours of a walkthrough, with no repairs, no showings and a closing date you choose. We show the listing estimate and the cash offer side by side so you can see the difference in net proceeds and decide.

What Key Biscayne Homes Are Worth Right Now

The median single family home in Key Biscayne closed at $5,060,312 in the last 90 days, or $1,519 per square foot. The median condo or townhome closed at $1,500,000 ($958 per square foot). Single family sellers achieved 95.1% of their asking price. Those are medians of everything that sold. They tell you where the market is, not what your home is worth: half of all sales closed above them and half below, for reasons a valuation has to account for one by one.

What Moves a Home's Value in Key Biscayne

In Key Biscayne the biggest differences come from the property's setting: on the water, the dock and lift, the depth at low tide, the width of the canal and whether a fixed bridge stands between the dock and the inlet, which can move two otherwise identical homes a long way apart; and in an oceanfront building, the floor, the line and the view, together with the association's reserves, its milestone inspection and any special assessment. Everywhere in South Florida, a buyer's insurer prices the roof's age, the windows and doors (impact rated or not) and the wind mitigation report, and a buyer's lender looks at the flood zone and the elevation certificate, so two homes of the same size can carry very different monthly costs and sell for different prices. Open or expired permits, unpermitted additions and the condition of the kitchen, the baths and the air conditioning do the rest.

An Online Estimate Versus a Broker's Valuation

An automated estimate reads public records and recent sales by distance and size. It cannot see a renovation, a view, a seawall, a roof replaced last year or a special assessment about to be levied, and in a city where neighboring streets sell for very different prices it is often wrong by more than the cost of a mistake in pricing. A broker's valuation starts from the closed sales that truly match your home, adjusts each one for what is different, and checks the result against the homes you would compete with today.

How to Get Your Key Biscayne Home Value

Enter your address on this page. A BreakThru Realty broker pulls the matching Key Biscayne closings from BeachesMLS, adjusts them for your home, and calls you within one business day with a written value range and the sales behind it. It is free and carries no obligation. If you are thinking of listing, we extend it into a full comparative market analysis and an estimate of your net proceeds; if you need speed instead, we can put a guaranteed cash offer beside it so you can compare the two numbers.

What Key Biscayne Buyers Pay Extra For

Key Biscayne buyers pay for land, water and the health of the association. On the village streets, a larger lot, a corner or canal frontage in the Cape Florida sections moves the number more than the kitchen does, because a new owner can rebuild. Elevation works the same way: a house already at current flood elevation avoids the substantial-improvement question that shadows an older one when a buyer plans a renovation. In the condo buildings, buyers pay for a direct ocean exposure, a higher floor, a renovated plan and, above all, an association that has funded its reserves and finished its milestone work. Proximity to Crandon Boulevard, the Village Green and the beach adds value too on Key Biscayne.

Which Parts of Key Biscayne Are Moving

The forces reshaping Key Biscayne are easier to name than to put a number on. On the single-family streets, the steady replacement of original early-fifties houses with elevated two-story homes resets values block by block, and a new house next door changes what an old one is worth. In the condominium communities, the state's milestone inspection and reserve rules split the older buildings into those that funded their repairs early and those still assessing owners, and buyers price that difference quickly. At the upper end, newer oceanfront buildings such as Oceana Key Biscayne and the Grand Bay residences set the ceiling for apartments. Watch permit activity on your street and the association minutes for your building to see which way your Key Biscayne home is heading.

Before You Ask for a Key Biscayne Valuation

A Key Biscayne valuation is only as good as the documents behind it, so gather them first. For a house, bring the survey, the elevation certificate, the roof permit and its date, a wind mitigation report and the record of permitted work from the village building department, including any addition or pool. Canal owners should add the dock and seawall permits and any recent inspection. Condo owners should bring the association budget, the reserve study, the milestone inspection if the building has had one, any special assessment notice and the leasing and pet rules. Note what you have renovated and when. With that file we can match your home to recent Key Biscayne sales on the same street or in the same building line.

What a Listing Agent Does for a Key Biscayne Seller

A listing agent sets the launch price from closed sales, prepares the home and the paperwork before it goes live, puts it in front of every buyer's agent through BeachesMLS and the portals, manages showings, and then negotiates: the offer, the inspection requests, an appraisal that comes in short, and the dates. Most of the money is made or lost in two places, the price the home is launched at and the negotiation after inspection, which is why both are worth asking about before you sign.

Questions to Ask Before You Sign a Listing Agreement

Which closed sales did you use for this price, and what did you adjust for? What will you do in the first fourteen days, and what happens if there is no offer by then? Who takes the photographs and video, and may I see a recent listing of yours? How do you handle showings, feedback and multiple offers? What is the commission, what does it include, how long is the agreement, and how can I end it? Have you sold in my building or community, and do you know its approval process and documents? An agent who prices from evidence answers all of them without hesitation.

How BreakThru Realty Markets a Key Biscayne Home

Every listing gets a written pricing analysis from matching Key Biscayne sales, professional photography, video and a floor plan, staging guidance, syndication to every major portal and every BeachesMLS agent, and its own page on this site. Beyond that the plan follows the property: for a waterfront home, aerial video of the route to the inlet and the dock specifications (length, lift capacity, depth, bridge clearance) written into the listing, because boaters search on them; and for an oceanfront condo, the association documents, reserve study and milestone inspection gathered before launch, because a buyer's lender and insurer ask for them in the first week. You hear the feedback from every showing, and a licensed broker negotiates the contract with you.

The Key Biscayne Market Your Agent Has to Price Against

143 homes and condos are for sale in Key Biscayne today, 8 of them new this week, and 25 are under contract. Single family homes have 13.5 months of inventory and took 142 days on average to go under contract. A listing agent's price has to win against that competition in its first two weeks, when a new listing gets most of its attention; a price that needs a reduction later usually nets less than the right price would have on day one.

Commission, in Plain Terms

Commission is not set by law or by any board; it is negotiable and agreed in writing in the listing agreement before anything else happens. There are no upfront fees with BreakThru Realty: photography, video, marketing and showings are included, and the commission is paid from the proceeds at closing. Whether you offer anything toward a buyer's broker is your decision, made with your agent as part of the pricing strategy, and we show you the net proceeds under each choice before you decide.

Marketing a Home in Key Biscayne Specifically

Selling on Key Biscayne means selling the island along with the home. A house listing leads with the lot, the elevation, the water if there is any, and the short trip to the beach, Crandon Park, the K-8 school and the shops on Crandon Boulevard. A canal home needs aerial footage that follows the route from the dock to open bay. A condo listing leads with the exposure, whether ocean, garden or the skyline across the bay, photographed from the unit at the right hour, along with the building's amenities and the state of its reserves. Buyers who are also touring Brickell, Coconut Grove and Miami Beach move quickly when the association documents are ready on the first day, so a Key Biscayne launch should include them.

Pricing a Listing Street by Street in Key Biscayne

Pricing a Key Biscayne house street by street starts with what the lot can become. Two homes on the same block of Harbor Drive or Curtiswood Drive can differ sharply if one is an original early-fifties house below flood elevation and the other is a recent elevated build. Canal frontage in the Cape Florida sections, lot width, the direction the water faces and the dock add their own premium, and Mashta Island has comparables of its own. For condos the unit of comparison is the building and the line: floor, ocean or bay exposure, renovation and the association's finances. We draw comparables from those tight sets rather than an island-wide figure, and name the Key Biscayne sales an appraiser is likely to use.

Who Is Buying in Key Biscayne

Buyers on Key Biscayne tend to arrive with a clear reason. Families relocating to Miami come for the parks at both ends of the island, the public K-8 school and a short drive to Brickell, and they usually want a house on the village streets. Second-home owners and seasonal residents favour the oceanfront condominiums, where a lock-and-leave apartment near the sand makes sense. Builders and owner-builders look for original houses on good lots to replace. Boaters want the Cape Florida canals and Mashta Island. Many of these buyers also tour Brickell, Coconut Grove and Miami Beach, so a Key Biscayne listing has to justify its island price on space, water or quiet.

Recently Sold in Key Biscayne

The newest closings in Key Biscayne, with the sale price, closing date and days on market for each.

Recently sold homes in Key Biscayne

What Is Your Key Biscayne Home Worth?

Request a free valuation built on recent Key Biscayne sales, or a full comparative market analysis before you list. No fee, no obligation, and a licensed broker answers within one business day.

Selling in Key Biscayne: Frequently Asked Questions

What is my Key Biscayne home worth?
It depends on what homes like yours have closed for. The median Key Biscayne single family sale in the last 90 days was $5,060,312 and the median condo or townhome $1,500,000, but your value comes from the closed sales that match your street, size, condition and features. Request the free valuation on this page and a broker builds it from those sales, with a full comparative market analysis if you are thinking of listing.
How long does it take to sell a home in Key Biscayne?
Single family homes that closed in Key Biscayne in the last 90 days had been on the market 142 days on average, condos and townhomes 99 days. Well priced homes go under contract in the first few weeks; from contract to closing, financed buyers usually need 30 to 45 days and cash buyers can close in two. Condos add association approval, which we start on day one.
What does it cost to sell a home in Key Biscayne?
The commission is agreed in writing before the listing goes live and there are no upfront fees; photography, video, marketing and showings are included. At closing, Florida charges a documentary stamp tax on the deed, customarily paid by the seller, along with title and settlement fees and any association estoppel fee for a condo or HOA. We prepare a net proceeds estimate so you know what you will take home before you decide.
Should I list my home or take a cash offer?
List it if you can give the sale a few weeks and want full market value: Key Biscayne sellers achieved 95.1% of asking on the typical single family sale in the last 90 days. Take the cash offer if you need a certain closing date, cannot make repairs or do not want showings. We put both numbers side by side, and you can keep the cash offer as a backup while the home is listed.
Do condos sell differently from houses in Key Biscayne?
Yes. The median condo or townhome in Key Biscayne closed at $1,500,000 against $5,060,312 for a single family home, with 9.3 months of condo inventory versus 13.5 for houses, and condo buyers weigh the association fee, the reserve study, the milestone inspection and the rental rules as much as the unit. We assemble those documents before the listing goes live so the buyer's questions are answered on day one.
Do you already have a buyer looking for a property like mine in Key Biscayne?
BreakThru Realty works with hundreds of prequalified buyers searching for properties. Each one tells us the areas, the price range, the property type and the features they want, and we keep that on file. Whether one of them fits your home is something a licensed broker checks for your property specifically, before the call. Your home may be the one a buyer is waiting to find; we confirm it before we call it a match, and a potential match is a conversation, not an offer.
How will you reach the right buyers?
First, the buyers already working with us whose requirements your home fits. Then the rest of the market: professional photography, video and floor plans, the MLS and every portal it feeds, cooperating brokers across South Florida, and direct outreach to the buyers most likely to pay for what you own. You receive the plan in writing and a report of inquiries, showings and feedback while the home is listed.
Do I have to list with BreakThru Realty after requesting a review?
No. The review is yours to keep, nothing is listed and nobody is told you asked. If you decide to sell, you choose who represents you and when.
How do you market waterfront, luxury and condo properties differently in Key Biscayne?
A waterfront home is priced on the water first: the dock, the depth, the bridges on the way to the inlet and the seawall, and it is photographed from the water and the air for the boaters who search on those details. A luxury home is positioned privately before it is announced, with the buyer profile, the private previews and the broker network set out in writing. A condo sale starts with the association file, the budget, the reserve study, the milestone inspection and the leasing rules, assembled before the listing goes live so a buyer's questions are answered on day one.
How much is my house worth in Key Biscayne?
The median Key Biscayne single family home closed at $5,060,312 in the last 90 days and the median condo or townhome at $1,500,000, but your home is not the median. Its value comes from the closed sales that match its street, size, condition and features. Enter your address on this page and a broker sends you a written range with the sales behind it, free.
What is the average price per square foot in Key Biscayne?
The median sold price per square foot in Key Biscayne over the last 90 days is $1,519 for single family homes and $958 for condos and townhomes. It falls as homes get larger and rises with water, view and renovation, so it is a way to compare similar homes rather than a way to price one.
How accurate are online home value estimates?
They are a starting point. An automated estimate cannot see a renovation, a view, a seawall, a new roof or a pending assessment, and in Key Biscayne those are most of the difference between two homes of the same size. A broker's valuation uses the same closed sales a buyer's appraiser will use and adjusts each for what is different.
Are Key Biscayne home values going up or down?
The median single family sold price in Key Biscayne is up 18.4% on the same 90 days a year ago, and condos and townhomes are up 16.3%. The Key Biscayne housing market report linked on this page shows twelve months of closings month by month.
Does a home valuation cost anything?
No. The valuation is free and carries no obligation to list. It is a broker's opinion of value built from recent closed sales, not an appraisal; a lender will order its own appraisal when a buyer finances the purchase.
How do I choose a listing agent in Key Biscayne?
Ask each agent for the closed sales behind their suggested price and what they adjusted for, their plan for the first fourteen days, who produces the photography and video, how they handle multiple offers, and how you can end the agreement. Choose the one who prices from evidence rather than the one who names the highest number; an overpriced listing in Key Biscayne sits, and a listing that sits sells for less.
How much commission do realtors charge in Key Biscayne?
Commission is negotiable and is not set by law or by any board. It is agreed in writing in the listing agreement before the home goes live, and with BreakThru Realty there are no upfront fees: it is paid from the proceeds at closing. We show you an estimate of your net proceeds alongside it, so you are comparing what you keep, not just a rate.
What should I do before I list?
Find out the roof's age, close any open permits, gather the survey, the elevation certificate and the wind mitigation report if you have them, and for a condominium request the association's documents, budget and inspection reports. Those are what a South Florida buyer's insurer and lender ask for, and having them ready keeps a contract from falling apart in its first two weeks.
Can I cancel a listing agreement?
Ask before you sign. A listing agreement runs for a fixed period and sets out how it can be ended. We explain the term and the cancellation provision in plain words before you sign ours, and we would rather release a seller who is unhappy than hold them to a date.

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