$498,500
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.
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.
Property Details
Price:
$498,500
MLS #:
A11907654
Status:
Active
Beds:
0
Baths:
0
Type:
Single Family
Subtype:
Residential
Subdivision:
CONCH KEY
Neighborhood:
conchkey
Listed Date:
Nov 3, 2025
Lot Size:
3,500 sqft / 0.11 acres (approx)
Schools
Interior
Exterior
Direction Faces
South
Lot Features
Other Location, Less Than 1/4 Acre Lot, De-Mucked, No Misc/Improvements, Other
Other Structures
None
View
Other Water View
Financial
Tax Year
2025
Taxes
$1,357
Mortgage Calculator
Map
Current real estate data for Single Family in Marathon as of Jul 09, 2026
40
Single Family Listed
206
Avg DOM
892
Avg $ / SqFt
$2,987,870
Avg List Price
Community
- Address77 S Conch Ave Marathon FL
- SubdivisionCONCH KEY
- CityMarathon
- CountyMonroe County
- Zip Code33050
Subdivisions in Marathon
- 9999
- ANGLERS AT SOMBRERO
- BOAT HOUSE CONDOMINIUM,Boat House Marina
- BONEFISH TOWERS 74 UNITS
- BOUGANVILLEA VILLAS CONDO
- BUTTONWOODS ACRES
- CASA BLANCA
- COCO PLUM BEACH
- COCO PLUM BEACH REPLAT
- Cocoplum beach
- CONCH KEY
- Country Club Sombrero Blv
- CRAINS SUBD
- Duck Key
- FLAMINGO ISLAND EST AMD P
- GRASSY KEY,SeaGlass Cove
- GULFPOINTE I & II
- GULFSTREAM SHORES #2 AMD
- HARBOR CLUB SOUTH CONDOMI
- HARBOR ISLE
- HARBOR ISLE SEC A
- JG ESTATES
- KEY COLONY BEACH 1ST ADD
- KEYS RV/MOBILE HOME CONDO
- Knowlson Colony
- LATITUDE 24 REPLAT OF PO
- Lincoln Manor
- LITTLE VENICE
- LITTLE VENICE NO2
- Little Venice,Fed Economic Zone
- MARAMEADE AMD
- NORTH MARATHON SHORES PLA
- NORTH MARATHON SHORES PLA,Dodge Subdivision
- OCEAN ISLES FISHING VILLA
- PARRISH SUBD
- PIRATES COVE II, A CONDOM
- PUERTA DEL SOL
- Riggs Sub
- Riggs Sub 47.5
- RIGGS SUBD,Galway Bay
- SEAAIR ESTATES
- SEAVIEW
- SEAWATCH CONDOMINIUM
- Sunrise Isle,Sunrise Isles
- SUNSET BAY
- THE RESERVE AT SOMBRERO
- Tingler Island
- TRADE WINDS WEST
- Tranquility Bay 48.5
- Vaca Cut
- VENICE
- WALORISS SUBD
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Property Summary
- Located in the CONCH KEY subdivision, 77 S Conch Ave Marathon FL is a Single Family for sale in Marathon, FL, 33050. It is listed for $498,500 and features 0 beds, 0 baths, and has approximately 0 square feet of living space.The average price per square foot for Single Family listings in Marathon is $892. The average listing price for Single Family in Marathon is $2,987,870.

77 S Conch Ave
Marathon, FL












