Search


$599,000
310 3rd Street
Key Colony, FL 33051
MLS# 620613
2 beds  |  2 baths  |  1031 sqft


310 3rd St.
  1 / 35  
310 3rd St. 310 3rd St. Updated Kitchen Living Room Dining Room Kitchen Kitchen Kitchen Kitchen/Living Room Dining / Wine Bar Dining Room Living Room Primary suite Primary Suite Front Balcony Primary Walk In Closet Bathroom #1 Bedroom #2 Primary Bathroom Front of Home Lower Level Exterior Lower Level Lower Level Back of Home Backyard Backyard Rendering Backyard Laundry New Metal Roof Key Colony 3rd St Key Colony Aerial Key Colony Beach Atlantic 310 3rd St. 310 3rd St Floor Plan UPSTAIRS
Open House (07/24/2026 - 11:00 am - 1:00 pm)

Property Description
Beautifully updated and move-in ready, this elevated Key Colony Beach half duplex is the perfect blend of island charm, comfort, and value! Step inside to a bright, inviting main living area featuring an updated kitchen with stunning new granite countertops, creating the ideal space for gathering with family and friends. Priced at just $599,000, this is one of the best opportunities to own in one of the Florida Keys' most desirable waterfront communities. Offering 2 bedrooms, 2 bathrooms, and 1,031 square feet of living space, this home also features a brand-new metal roof for added peace of mind. The spacious primary suite includes a walk-in closet and a private balcony overlooking the backyard--the perfect place to sip your morning coffee or relax in the evening while enjoying the tropical breeze. The expansive lower-level living and entertaining area provides the ultimate bonus space to unwind after a day on the water, watch the game, host friends, or simply embrace the laid-back Keys lifestyle. The generous backyard provides plenty of space to design your own private tropical oasis--add a pool, lush landscaping, or an outdoor kitchen to create the Florida Keys retreat you've always imagined. Location is everything, and this home delivers! Just steps from the Cabana Club, waterfront parks, pickleball and tennis courts, playgrounds, golf, restaurants, walking paths, and all the amenities that make Key Colony Beach one of the most sought-after communities in the Florida Keys. Whether you're searching for a full-time residence, a vacation escape, or an investment property, this home offers an unbeatable combination of location, exceptional value, and lifestyle. Don't miss your chance to own your slice of paradise at an incredible price!

Details
Maps
Contract Information
Listing Board: Marathon/Lower Keys
As is Rght to Inspct: Yes
Species List: No
Current Price: $599,000
Listing Date: 2026-07-13
List Price: $599,000
Location, Tax & Legal
City: KEY COLONY
Off Shore Island: No
Mile Marker: 53.5
Marathon Neighborhood: Marathon East - Gulf (Airport to Vaca)
Side: Ocean
Flood Zone: AE
Alternate Key #: 1076643
Parcel #: 00072590-000000
Zoning: R-1A - Key Colony Single Family
Deed Restrictions: No
Legal: BK 2 N 1/2 LT 31 KEY COLONY BEACH PB3-120 SHELTER KEY
Taxes: 4709.55
Tax Year: 2025
Pub Sewer HkUp: Yes
Street #: 310
Street Name: 3rd
Street Suffix: Street
Key/Island: Key Colony
State/Province: FL
Zip Code: 33051
County: Monroe
Subdivision: Key Colony Beach (53.5)
Area: 17 - Vaca Cut - Both Sides Holiday Inn/Key Colony
General Property Description
Realtor.COM Type: Residential - Single Family
Waterfront: No
Control Depth: 0
Lot Size: 30 X 110
Lot SqFt: 3300
Pool: No
Total Units: 0
Acres: 0.08
SqFt Source: Property Data Card
Rentals Allowed: Yes
Min Rental Days: 7
Style: Half Duplex
Year Built: 1982
Living Apx SqFt: 1031
Total Bedrooms: 2
Full Baths: 2
Total Baths: 2
Remarks & Misc
Remarks – Consumer: Beautifully updated and move-in ready, this elevated Key Colony Beach half duplex is the perfect blend of island charm, comfort, and value! Step inside to a bright, inviting main living area featuring an updated kitchen with stunning new granite countertops, creating the ideal space for gathering with family and friends. Priced at just $599,000, this is one of the best opportunities to own in one of the Florida Keys' most desirable waterfront communities. Offering 2 bedrooms, 2 bathrooms, and 1,031 square feet of living space, this home also features a brand-new metal roof for added peace of mind. The spacious primary suite includes a walk-in closet and a private balcony overlooking the backyard--the perfect place to sip your morning coffee or relax in the evening while enjoying the tropical breeze. The expansive lower-level living and entertaining area provides the ultimate bonus space to unwind after a day on the water, watch the game, host friends, or simply embrace the laid-back Keys lifestyle. The generous backyard provides plenty of space to design your own private tropical oasis--add a pool, lush landscaping, or an outdoor kitchen to create the Florida Keys retreat you've always imagined. Location is everything, and this home delivers! Just steps from the Cabana Club, waterfront parks, pickleball and tennis courts, playgrounds, golf, restaurants, walking paths, and all the amenities that make Key Colony Beach one of the most sought-after communities in the Florida Keys. Whether you're searching for a full-time residence, a vacation escape, or an investment property, this home offers an unbeatable combination of location, exceptional value, and lifestyle. Don't miss your chance to own your slice of paradise at an incredible price!
Directions: US 1 to Sadowski to E Ocean Dr. to 3rd St.
Association Info
Mandatory Home Owners Asc: No
1st Right of Refusal: No
Association Fee $: 0
Fee Includes
None: 1
Dockage
None: 1
Tax Exemptions
None: 1
Appliances
Dishwasher: 1
Dryer: 1
Microwave: 1
Oven: 1
Refrigerator: 1
Washer: 1
Pets
Pets Allowed: 1
Cooling
Central Air: 1
Waterfront
None: 1
Waterview
No Waterview: 1
Floor
Laminate: 1
Tile: 1
Interior Features
Drapes/Blinds Incl: 1
Granite Counter Top: 1
Storage: 1
Walk-in Closet(s): 1
Specialty Rooms
Laundry Room: 1
Other: 1
Building Style
Above Flood: Unknown
Windows/Doors
Impact Rstnce Window: 1
Vehicle Storage
Car(s): 4+
Covered Parking: 1
Open Parking: 1
Construction
CBS: 1
Land Size
Less Than 1/4 Acre: 1
Furnished
Negotiable: 1
Utilities
Buyer to Verify: 1
FKAA: 1
Porch/Balcony
Open Porch/Balcony: 1
Exterior Features
Rain Gutters: 1
Shed: 1
Storage: 1
Roof
Metal Roof: 1
Status Change Info
Status: Active
Property Features
Fee Includes: None
Tax Exemptions: None
Waterfront: None
Waterview: No Waterview
Dockage: None
Vehicle Storage: Covered Parking; Open Parking
Furnished: Negotiable
Cooling: Central Air
Utilities: Buyer to Verify; FKAA
Interior Features: Drapes/Blinds Incl; Granite Counter Top; Storage; Walk-in Closet(s)
Specialty Rooms: Laundry Room; Other
Appliances: Dishwasher; Dryer; Microwave; Oven; Refrigerator; Washer
Exterior Features: Rain Gutters; Shed; Storage
Construction: CBS
Floor: Laminate; Tile
Roof: Metal Roof
Pets: Pets Allowed
Land Size: Less Than 1/4 Acre

Listing Office: Florida Keys Real Estate Group

Last Updated: July - 22 - 2026

The data relating to real estate for sale on this web site comes in part from the Florida Keys MLS, Inc. Information provided is deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. The information being provided is for consumers’ personal, non-commeral use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. IDX data is deemed reliable but is not guaranteed accurate by the MLS.