STIRRUP KEY
Homes for Sale in Marathon, FL
True comps, carrying-cost math, and listings before the portals.
Market Heat
Stirrup Key sits inside Monroe County's Florida Keys market, where scarcity of buildable land and direct water access have driven prices to a median just above $2.4 million. The long-term appreciation story — roughly 245 percent since 2012 — reflects how little inventory the Keys ever release. What is setting price here is not amenity packages or HOA programming; it is the land itself, the water orientation, and the irreplaceable geography.
The current posture is unambiguously a buyer's market for this price tier. A market heat score of 29, a median days on market pushing toward 155, and a year-over-year price decline of more than 12 percent all point to the same thing: sellers are waiting longer and conceding ground. Buyers with the conviction and capital to transact now are negotiating from a position that has not existed here in years.
STIRRUP KEY right now
🔴 Off the recent peak. The trailing-12-month median ($2.42M) is down 12.2% from the prior 12 months ($2.75M) and up 245% since 2012. With about 4 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 floridakeys closed sales, 12-month windows ending July 27. Confidence: Low (4 and 5 sales in the two windows).
What's unique here: the median sale price is about 3x the typical Monroe County sale ($2.42M vs $950K, trailing 12 months, floridakeys records).
Jump to: Price history & scorecard · Homes for sale · Schools · FAQ
Updated July 27, 2026 · Live data: floridakeys, refreshed twice daily · MLS facts carry their source; interpretation lines are Momentum Research · Data sources & freshness
The 60-Second Overview
STIRRUP KEY market snapshot (as of July 27, 2026): the median sale price is about $2.42M, and a median 154 days on market for closed sales. The trailing-12-month median is down 12% from the prior 12 months and up 245% since 2012, computed from record-level floridakeys closed sales (4 closings in the current window).
Stirrup Key is a small, water-oriented enclave within Marathon — a city defined by its mid-Keys position, boating access, and limited land supply — where the median price of $2.415 million reflects a market driven almost entirely by site value and waterfront utility rather than community infrastructure.
Who STIRRUP KEY is best for.
Best for
- A buyer with a $2.4M-and-above budget seeking direct water access and irreplaceable Keys geography who can hold the asset for a multi-year horizon.
- A second-home or retreat buyer whose primary financial obligations are elsewhere and who views this as a long-duration, site-value-driven hold rather than a near-term trade.
- An investor or owner-user who has already underwritten Monroe County insurance costs, flood zone requirements, and the carrying expense of a low-liquidity market and still finds the risk-adjusted case compelling.
Probably not for
- A buyer whose budget ceiling sits at or near the current median — price spread in this market is wide and condition-driven, and there is no data here to support a 'starting price' assumption below the median.
- Anyone who needs to sell within a short timeframe; a median of roughly 155 days on market and only a handful of recent closings means exit timing is genuinely uncertain.
- A buyer expecting community infrastructure, amenity packages, or HOA-managed common areas — no such features are identified for this community, and the price is grounded in site value alone.
Price History: What Homes Here Have Actually Sold For
Median sale price over the trailing 12 months ending July 27 of each year, from record-level floridakeys closed sales. Same methodology as every appreciation figure on this page: the 2026 point ($2.42M) IS the median in the snapshot above, and the move from 2025 ($2.75M) IS the -12.2% one-year change.
Windows contain 1 to 7 sales each (4 in the current window); every figure carries its sample size, and thin markets swing on single closings. Listing data provided by Florida Keys MLS, Inc. Information is deemed reliable but is not guaranteed by the MLS to be accurate. Deemed reliable but not guaranteed.
The real cost & risk here
Before the list price, the Florida math the portals skip. These are Monroe 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 · Monroe 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.
The STIRRUP KEY buying strategy.
If we were buying in STIRRUP KEY 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 STIRRUP KEY.
Reading the Correction
A 12-plus percent year-over-year price decline sounds alarming until you set it against a 245 percent gain since 2012. What is happening in Stirrup Key is a repricing within a long bull run, not a structural collapse. Median days on market in the mid-150s tells you that sellers still have price expectations anchored to peak conditions, and a subset of that inventory is sitting until reality and expectation meet. The closings window of only four transactions in the data period underscores how thin and event-driven this market is — a single outlier sale can move the median significantly in either direction.
Buyers should approach Stirrup Key with the same discipline applied to any illiquid, high-unit-price asset. Comparable sales are sparse, pricing is condition-driven and highly individual, and the absence of identified community amenities means value is almost entirely tied to the specific lot, water access, and structure. There is no amenity premium or HOA infrastructure buffering the transaction — you are buying the site. That focus simplifies due diligence in some ways and demands more rigor in others, particularly around flood zone status, insurance costs, and physical condition of any structure.
The location and the amenities are priced into every listing in STIRRUP KEY. The deal is won or lost on condition, the comps, and the renovation math.
Momentum Buy Score.
Our proprietary 0 to 10 read across the factors that decide how a home in STIRRUP KEY buys, holds, and resells. Momentum Research; not an appraisal.
Momentum Intelligence Scores are our proprietary, qualitative assessment on a 0 to 10 scale, built from the record-level market data on this page. They are a framework for comparing communities, not a guarantee of future value and not advice on a specific home; unlike an automated value estimate they do not price your home, they grade the community on evidence you can inspect. Composite is the plain average of the 3 factors (4.9). Basis: Long-Term Appreciation +245% since 2012; Recent Direction -12.2% year-over-year; Pricing Power 87.7% sale-to-list. Refreshed with each data update.
Why work with Momentum here
Thin-volume, high-stakes markets like Stirrup Key punish buyers and sellers who rely on automated estimates or agents unfamiliar with Keys-specific variables — flood zone classification, insurance underwriting, dock permits, and Monroe County land-use rules all carry outsized weight at this price point. Momentum brings a transactional approach calibrated to illiquid markets: we identify where seller expectation and market reality have diverged, we underwrite the real cost of ownership before you are under contract, and we do not confuse long-term appreciation with near-term liquidity. In a market where four closings constitute the recent record, context and discipline matter more than volume.
STIRRUP KEY in 15 seconds.
HOA, CDD & Fees
- Mandatory HOA — confirm current dues
- 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 STIRRUP KEY 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 STIRRUP KEY sales matched to your home.
Price it to the comps and condition, not an automated estimate.
If you are thinking about selling in STIRRUP KEY, the right list price comes from recent comparable sales matched to your home's condition and location, not an automated estimate.
What is your STIRRUP KEY home worth?
Get a no-obligation home value based on real comparable sales in STIRRUP KEY, 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 STIRRUP KEY?
How long do homes in STIRRUP KEY take to sell?
Have STIRRUP KEY home prices gone up?
Who is the best real estate agent for STIRRUP KEY?
How do I find a top Marathon real estate agent who knows STIRRUP KEY?
Can Momentum Realty connect me with an agent for STIRRUP KEY?
Should you buy in STIRRUP KEY?
An honest fit check. We will tell you when it is not your community.
Data sources & freshness
| Community market stats | floridakeys closed sales, 12-month windows ending July 27, 2026 |
| Historical depth | Closed-sale records back to 2006 (73 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 floridakeys 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 floridakeys member average and 8 days faster, and we’ll price yours against live your area comps.
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More Marathon & The Florida Keys & Monroe County guides
Compare before you commit - every guide covers pricing, HOA/CDD, insurance posture, and fit. Browse all of The Florida Keys & Monroe County or the full Neighborhood Finder.