
77 S Conch Ave, Marathon FL 33050, MARATHON, FL, 33050
Active276 days on marketListed Nov 3, 2025MLS #A11907654
About this home
77 S Conch Ave, Marathon FL 33050
Presenting 77 S Conch Key, a 4,500-square-foot parcel in the heart of the Florida Keys that includes two transferable ROGO allocations, each with an estimated value of approximately $149,000. The property is approved for development under existing ROGO plans allowing for up to four residential units, creating a rare opportunity for investors, developers, or end users seeking to build in a market where development rights are increasingly limited. The value of this offering extends beyond the land itself. The included ROGO allocations provide a significant entitlement advantage, reducing the time, uncertainty, and cost often associated with securing build rights in the Florida Keys. Whether utilized for a private compound, vacation residences, workforce housing, or an income-producing investment, the property offers flexibility and long-term upside. While the site does not include water access, it benefits from a central Conch Key location with convenient access to Marathon's marinas, restaurants, shopping, and recreational amenities. Opportunities to acquire buildable Keys property with transferable allocations and approved development plans are increasingly scarce, making 77 S Conch Key a compelling development and investment opportunity.
Facts & features
The home at a glance
0.11 ac
Lot size
Inside
Outside & construction
Community & fees
Utilities & systems
The numbers
What it really costs
Built from this home's actual numbers — the most recent property-tax bill on record — not generic estimates.
$3,428 /mo · 3.5% down FHA, 30-yr fixed at 6%
The assumptions
FHA is the default here because it gets you in the door with just 3.5% down. Switch to Conventional or VA below.
These numbers assume a generic buyer — your credit, down payment and loan program change them. Get the real quote in minutes:

Andrew Acosta
Acosta Home Loans with PRMG · NMLS #1468866
Run your own numbers
Estimated payment
$3,428/mo
Includes FHA mortgage insurance and the financed 1.75% upfront premium. Taxes reflect the most recent bill on record; insurance is a typical-Florida estimate. Your lender’s numbers will differ. CENTURY 21 Edge partners with Florida’s best lenders.
Where it sits
Inside Marathon
Get to know Marathon. See the full Marathon guide →
MARATHON 33050 — neighborhood snapshot
Population
10,586
Median age
48.1
Median income
$83,243
Median home value
$705,600
Avg household
2.44
Households w/ children
995
For the school run
Monroe County School District
School assignments and ratings via edgeAI — always verify with the district.
The numbers that matter
The Marathon market
$1.1M → $815K
Marathon median sold, yr/yr
95.6%
Sale-to-list ratio (12 mo)
Median sold price, Marathon, trailing 36 months (3-month rolling) · live MLS data.
This home is listed 22% below the MARATHON 33050 median. See the full Marathon market guide →
Paper trail
This home's history
Reality check
What actually sold near 77 S Conch Ave
Asking prices are opinions — closed sales are facts. The most comparable homes that actually changed hands nearby in the last twelve months.
Sold · Oct ’25$575,000
Nearby listing
2 bd · 1 ba · 510 sqft · $1,127/sqft · 52 DOM
Closed-sale data from the MLS, last 12 months, selected for similarity in size and location. No two homes are identical — ask us for a full comparative analysis.
Your home team
The pros in your corner
Buying a home is two conversations — the home and the money. Here’s who handles each, side by side, already working together.
Your agent
John Carpenter
CFO/Broker · CENTURY 21 Edge
Tours, negotiation, and every question about 77 S Conch Ave — start here.

Your lender
Andrew Acosta
Acosta Home Loans with PRMG · NMLS #1468866
Pre-approval, rates, and the real monthly number for 77 S Conch Ave — before you fall in love.
See it in person
Schedule a tour
Live availability from John's calendar — pick a time and it's booked. Confirmation lands in your inbox immediately.
Straight answers
77 S Conch Ave FAQs
What would the monthly payment be for 77 S Conch Ave, Marathon FL 33050?+
With 3.5% down on a 30-year FHA loan at 6%, the all-in payment lands around $3,428/mo — principal and interest, the actual property-tax bill and typical Florida insurance. The payment calculator on this page lets you switch loan type (FHA, Conventional, VA) and adjust the down payment, rate and term.
What are the property taxes on 77 S Conch Ave, Marathon FL 33050?+
The most recent tax bill on record (2025) was $1,357. A new owner's bill can differ once the sale price resets the assessed value — we can walk you through what to expect.
How does the price compare to other homes in Marathon?+
At $498,500, this home is listed about 44% below the Marathon median of $885,000. The market section on this page shows how the area is trending.
Which schools are assigned to 77 S Conch Ave, Marathon FL 33050?+
Marathon School (high), Stanley Switlik Elementary School (elementary) — Monroe County School District. Always verify school assignments with the district before relying on them.
The brief
Four things that matter here
01Under the MARATHON 33050 market on paper
$498,500 is 22% below the MARATHON 33050 median of $637,000.
02Other Water View views
The other water view view is part of what you're buying — views hold value independently of the structure.
03Time on market is leverage
276 days on market against a Marathon median of 94 — sellers in this position are usually ready to negotiate.
04The price has already moved
Listed at $499,000, now $498,500 — a $500 cut. The full history is in the market section below.
Keep looking
Similar homes nearby
Listing courtesy of Alterra Realty Group Inc · Bram Scolnick. MLS #A11907654.
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 Miami Association of REALTORS®.
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