SUNSET BAY
Homes for Sale in Marathon, FL
True comps, carrying-cost math, and listings before the portals.
Sunset Bay sits in Marathon, Monroe County — the Florida Keys — and that geography alone anchors the pricing conversation. With a median living area of 1,147 square feet and a stock that spans from 1938 to 2023, what you are actually pricing here is location and lot access, not square footage. The median year built of roughly 1987 means the community sits in a generation of Keys construction that predates modern flood and wind codes, so condition, elevation certificates, and insurance underwriting will move individual values far more than any list-price trend.
Exactly half of the 32 homes carry a homestead exemption, which signals a meaningful split between primary residents and non-homesteaded owners — the latter category typically includes investment or vacation properties. For a buyer, that dynamic affects how motivated sellers are priced and how the rental use history reads in disclosure. For a seller, it is worth understanding how a buyer's lender will classify the property, because second-home and investment financing carry different rate and reserve requirements than primary-residence loans.
Who SUNSET BAY is best for.
Best for
- A buyer seeking a Keys vacation or second property who has already priced flood and wind insurance into their carrying-cost model.
- An investor targeting non-homesteaded Keys inventory with a long hold horizon and tolerance for variable annual insurance costs.
- A primary-residence buyer relocating to the Middle Keys who wants a small, established community rather than a large planned development.
Probably not for
- A buyer whose financing approval is contingent on a specific monthly payment that has not accounted for Keys-market insurance premiums.
- A buyer expecting consistent construction standards across the community — the nearly nine-decade build range makes that assumption risky without property-specific due diligence.
- A buyer who requires community amenities or HOA-managed common areas as part of the lifestyle equation.
The SUNSET BAY buying strategy.
If we were buying in SUNSET BAY 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 SUNSET BAY.
A small inventory with a wide vintage spread
Thirty-two homes is a thin market. When inventory is this tight, a single distressed closing or a premium waterfront sale can shift the median meaningfully, so any snapshot — including this one — should be read as a point-in-time read rather than a stable trend line. The build range of 1938 through 2023 is unusually wide for a community this size, which means buyers cannot assume consistency in construction standard, utility systems, or flood-mitigation features from one parcel to the next. Each home demands its own due-diligence review.
The roughly 1987 median year built places a significant portion of the stock in an era that predates the post-Andrew building code reforms Florida enacted in the 1990s. That is not disqualifying, but it does mean renovation scope and insurance costs can vary sharply by structure. Buyers should budget for an independent inspection that specifically evaluates roof condition, opening protection, and the elevation certificate — all three feed directly into what flood and wind insurance will cost annually, and in the Keys that cost is not a footnote in the budget.
The location and the amenities are priced into every listing in SUNSET BAY. The deal is won or lost on condition, the comps, and the renovation math.
Why work with Momentum here
A 32-home community with no formal amenity infrastructure and a build range spanning nearly nine decades does not reward a generalist approach. Momentum Realty focuses on Northeast Florida, and our referral network in the Keys is built on brokers who live this market daily — we will connect you with the right local specialist while handling the contractual, financing, and negotiation layers from our end. If the numbers or the insurance picture do not work for you, we will say so before you are under contract, not after.
SUNSET BAY 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 SUNSET BAY 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 SUNSET BAY sales matched to your home.
Price it to the comps and condition, not an automated estimate.
If you are thinking about selling in SUNSET BAY, the right list price comes from recent comparable sales matched to your home's condition and location, not an automated estimate.
What is your SUNSET BAY home worth?
Get a no-obligation home value based on real comparable sales in SUNSET BAY, not an automated guess. Tell us about your home and we will personally prepare your numbers and a pricing strategy. No obligation, no spam.
See homes for sale in SUNSET BAY on the map →
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.
Frequently Asked Questions
How many homes are in SUNSET BAY?
What share of SUNSET BAY is owner-occupied?
When were the homes in SUNSET BAY built?
Do cash buyers compete in SUNSET BAY?
Who is the best real estate agent for SUNSET BAY?
How do I find a top Marathon real estate agent who knows SUNSET BAY?
Can Momentum Realty connect me with an agent for SUNSET BAY?
Should you buy in SUNSET BAY?
An honest fit check. We will tell you when it is not your community.
Data sources & freshness
| Housing stock & ownership | Florida DOR 2025 assessment roll (street-list match (3 streets, ZIP 33050)) |
| Historical depth | Closed-sale records back to 2019 (17 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.