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$2,675,000
520 12Th Street
Key Colony, FL 33051
MLS# 618093
3 beds  |  2 baths  |  1584 sqft


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Open House (01/13/2026 - 4:00 pm - 6:00 pm)

Property Description
Welcome to an exceptional island retreat in the heart of Key Colony Beach. This beautifully elevated single-family residence embodies refined coastal luxury, offering 3 bedrooms and 2 bathrooms, bonus space with no detail overlooked. Thoughtfully renovated, the home features a new metal roof, impact-rated windows and doors, elegant LVT flooring, designer lighting, custom cabinetry, and exquisite Cambria quartz countertops throughout. Outdoors, the property transforms into a private resort. Lush tropical landscaping and ambient exterior lighting set the tone, while an outdoor shower, custom bar, and sparkling pool create the perfect setting for entertaining or unwinding in complete privacy. Boating enthusiasts will appreciate 75 feet of concrete dockage with a composite step-down system, seamlessly blending function with style. An expansive, titled upper deck offers a sophisticated space for gatherings, sunset cocktails, and elevated island living. Ideally positioned just moments from the iconic Sunset Park, this residence delivers a rare combination of luxury, lifestyle, and location. A truly turnkey opportunity to own a distinguished piece of paradise in Key Colony Beach. Schedule your private showing today.

Details
Maps
Contract Information
Listing Board: Marathon/Lower Keys
As is Rght to Inspct: Yes
Potential Short Sale: No
Bank Owned: No
Species List: No
Current Price: $2,675,000
Listing Date: 2026-01-13
List Price: $2,675,000
Location, Tax & Legal
City: KEY COLONY
Mile Marker: 53.5
Marathon Neighborhood: Marathon East - Gulf (Airport to Vaca)
Side: Ocean
Flood Zone: AE
Alternate Key #: 1083232
Parcel #: 00077500-000000
Zoning: R-1A - Key Colony Single Family
Deed Restrictions: Unknown
Legal: BK 12 N 62.5 FT LT 55 AND S 12.5 FT LT 54 KEY COLONY BEACH SECOND ADDN SHELTER KEY
Taxes: 14634.65
Tax Year: 2025
Pub Sewer HkUp: Yes
Street #: 520
Street Name: 12Th
Street Suffix: Street
Key/Island: Key Colony
State/Province: FL
Zip Code: 33051
County: Monroe
Subdivision: Key Colony Bch 2nd Addn (53.5)
Area: 17 - Vaca Cut - Both Sides Holiday Inn/Key Colony
General Property Description
Realtor.COM Type: Residential - Single Family
Waterfront: Yes
Control Depth: 4
Lot SqFt: 8250
Pool: Yes
Total Units: 0
Acres: 0.19
SqFt Source: Property Data Card
Rentals Allowed: Yes
Min Rental Days: 7
Style: Single Family
Year Built: 1985
Living Apx SqFt: 1584
Total Bedrooms: 3
Full Baths: 2
Total Baths: 2
Remarks & Misc
Remarks – Consumer: Welcome to an exceptional island retreat in the heart of Key Colony Beach. This beautifully elevated single-family residence embodies refined coastal luxury, offering 3 bedrooms and 2 bathrooms, bonus space with no detail overlooked. Thoughtfully renovated, the home features a new metal roof, impact-rated windows and doors, elegant LVT flooring, designer lighting, custom cabinetry, and exquisite Cambria quartz countertops throughout. Outdoors, the property transforms into a private resort. Lush tropical landscaping and ambient exterior lighting set the tone, while an outdoor shower, custom bar, and sparkling pool create the perfect setting for entertaining or unwinding in complete privacy. Boating enthusiasts will appreciate 75 feet of concrete dockage with a composite step-down system, seamlessly blending function with style. An expansive, titled upper deck offers a sophisticated space for gatherings, sunset cocktails, and elevated island living. Ideally positioned just moments from the iconic Sunset Park, this residence delivers a rare combination of luxury, lifestyle, and location. A truly turnkey opportunity to own a distinguished piece of paradise in Key Colony Beach. Schedule your private showing today.
Directions: Overseas Highway to the light at Key Colony. Turn into Key Colony, Take Sadowski Cswy, Turn Right on W Ocean Dr, Turn Right on 12th St.
Association Info
Mandatory Home Owners Asc: No
1st Right of Refusal: No
Association Fee $: 0
Fee Includes
None: 1
Dockage
Dock Length: 75
Dock: Concrete
Tax Exemptions
None: 1
Appliances
Dishwasher: 1
Disposal: 1
Dryer: 1
Microwave: 1
Range: 1
Refrigerator: 1
Washer: 1
Pets
Pets Allowed: 1
Cooling
Ceiling Fans(s): 1
Central Air: 1
Waterfront
Canal Front: 1
Waterview
Canal View: 1
Floor
Laminate: 1
Tile: 1
Neighborhood Feature
Fire Hydrant: 1
Tennis Courts: 1
Other Area Features: 1
Interior Features
Bar: 1
Built-in Cabinets: 1
Quartz Countertops: 1
Security System: 1
Storage: 1
Window Treatments: 1
Property Condition
Updated/Remodeled: 1
Specialty Rooms
Workshop: 1
Building Style
Above Flood: Yes
Stilt Column Height: Medium - 5Ft - 9Ft
Windows/Doors
Impact Rstnce Doors: 1
Impact Rstnce Window: 1
Other Windows/Doors: 1
Vehicle Storage
Covered Parking: 1
Garage: 1
Security
Other: 1
Construction
CBS: 1
Land Size
Less Than 1/4 Acre: 1
Furnished
Negotiable: 1
Terms
Cash: 1
Conventional: 1
Seller Finance Psble: 1
Utilities
Buyer to Verify: 1
Elect Separate Meter: 1
FKAA: 1
Municipal Sewer: 1
Porch/Balcony
Open Porch/Balcony: 1
Patio: 1
Title
Negotiable: 1
Exterior Features
Bar: 1
Lighting: 1
Outdoor Shower: 1
Storage: 1
Water Display: 1
Pool Info
In Ground: 1
Fiberglass: 1
Roof
Metal Roof: 1
Financial Status
Auction: No
Bank Owned: No
Potential Short Sale: No
Standard Sale: Yes
Status Change Info
Status: Active
Property Features
Fee Includes: None
Tax Exemptions: None
Waterfront: Canal Front
Waterview: Canal View
Property Condition: Updated/Remodeled
Vehicle Storage: Garage; Covered Parking
Furnished: Negotiable
Cooling: Ceiling Fans(s); Central Air
Utilities: Buyer to Verify; Elect Separate Meter; FKAA; Municipal Sewer
Interior Features: Bar; Built-in Cabinets; Quartz Countertops; Security System; Storage; Window Treatments
Specialty Rooms: Workshop
Appliances: Dishwasher; Disposal; Dryer; Microwave; Range; Refrigerator; Washer
Exterior Features: Bar; Lighting; Outdoor Shower; Storage; Water Display
Pool Info: In Ground; Fiberglass
Construction: CBS
Floor: Laminate; Tile
Roof: Metal Roof
Pets: Pets Allowed
Neighborhood Feature: Fire Hydrant; Tennis Courts; Other Area Features
Security: Other
Land Size: Less Than 1/4 Acre
Terms: Cash; Conventional; Seller Finance Psble
Title: Negotiable

Listing Office: Florida Keys Real Estate Group

Last Updated: January - 13 - 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.