420 11th Street, Key Colony, FL 33051 - Photo 1

1/1

$2,775,000

Sold
Closed
Duplex
6 Beds
4 Full Baths
3,392 Sq. Ft.

1/1

Property Description

Welcome to your waterfront retreat in the heart of Key Colony Beach. Perfectly positioned on a deep-water canal with 75' of concrete dockage, this spacious 6-Bed, 4-Bath residence offers the ideal blend of island living, boating convenience, and exceptional investment potential. Designed to comfortably accommodate family and guests, the property features a unique floor plan with a 4-Bedroom, 2-Bath main residence and an attached ground level 2-Bedroom, 2-Bath guest quarters, providing flexibility for multi-generational living, entertaining, or maximizing rental income. Soaring ceilings and abundant natural light enhance the open living area, while impact-rated windows and doors provide peace or mind. A highlight of the home is the expansive screened porch overlooking the sparkling pool and tranquil canal. Outside, the resort-style backyard is built for enjoying the Florida Keys lifestyle. Relax in the heated pool and spa, soak up the sun on multiple lounge areas, or dine outdoors while watching the boats cruise by. The expansive patio offers plenty of seating for gathering with family and friends, while the 75-foot concrete seawall accommodates boats up to approximately 35 feet. From your dock, you'll enjoy quick boating access to the Atlantic Ocean in just minutes, with nearby Vaca Cut providing convenient access to the Gulf. Additional features include a garage, ample storage, low-maintenance tropical landscaping, and plenty of room for everyone to enjoy. Located in the sought-after island community of Key Colony Beach, you're just moments from waterfront dining, golf, pickleball, walking paths, Sunset Park, marinas, and Middle Keys attractions. Whether you're searching for a luxury primary residence, second home, or an established investment property, this canal-front oasis checks every box.

Full Property Details

Full Property Details for 420 11th St

General

Sold For: $2,775,000
Taxes: $25,465 (2025)
Status: Closed
Type: Duplex
Source: 927
MLS ID: 620520
Added to Site: 101 day(s) ago

Interior

Interior Features: Walk-in Closet(s), Bar, Built-in Cabinets, Cathedral Ceilings, Granite Counter Top
Appliances: Stainless Steel Appliance(s), Dishwasher, Dryer, Microwave, Oven, Range, Refrigerator, Washer
Flooring: Tile

Rooms

Bathrooms

Total Bathrooms: 4
Full Bathrooms: 4

Bedrooms

Total Bedrooms: 6

Other Rooms

Laundry: Laundry Room

Additional Information

Shared Amenities: Other Area Features, Bike Paths, Beach, Tennis Court(s)
Pool: Yes
Pool Description: Heated, In Ground, Decked
Security/Safety: Patrolled Area

Exterior

Exterior Features: Fencing, Hot Tub
Deck/Patio: Patio, Screened
Porch/Patio/Deck: Patio, Screened

Parking

Garage: Yes
Attached garage: Yes
Parking Features: Off Street, Attached

Location

Area: 17 - Vaca Cut - Both Sides Holiday Inn/Key Colony
County: Monroe
Subdivision: Key Colony Bch 1st Addn Amd Plat (53.5)
Driving Directions: At mile marker 53.5, turn on to Sadowski Causeway, turn right on West Ocean Dr, turn right on 11th St. Address is 420 & 430 11th St. Property is on right side, paver drive.

Community

Assoc. Fees Include: None
Pets Allowed: Yes

Heating & Cooling

Central air: Yes
Air Conditioning: Yes
Cooling Type: Ductless, Central Air, Ceiling Fans(s)

Structural Information

Architectural Style: Above Flood
Construction: CBS, Stucco
Roof: Metal
Windows/Doors: Impact Rstnce Doors, Impact Rstnce Window
Square Feet: 3,392
Sq. Ft. Source: Property Data Card
Year Built: 1983

Unit Information

Units in Building: 2

Lot Features

Property View: Canal
Lot Size (Acres): 0.19
Lot Size (Sq. Ft.): 8,250
Lot Size Source: Property Data Card
Zoning: R-2A - Key Colony Two Family

Water Features

Water Front: Yes
Water View: Yes
Water Front Desc.: Canal Front

Financial Considerations

Tax Amount: $25,465.56
Tax Year: 2025
Terms: Cash, Conventional

Disclosures and Reports

Legal Description: BK 11 LOT 55 KEY COLONY BEACH FIRST ADDN AMENDED PLAT PB4-11 SHELTER KEY
Flood Zone: AE
APN: 00076710-000000

Listed by Coldwell Banker Schmitt Real Estate Co, Lisa H Ferringo (305) 797-1221
Sold by Coldwell Banker Schmitt Real Estate Co., Teri Hiller

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Listing agent

— 420 11th St —

Lisa H Ferringo

Coldwell Banker Schmitt Real Estate Co

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Schools

Schools serving 420 11th St

School District:Monroe County School District, Middle Torch Key, FL

Name	Grades	Distance
Stanley Switlik Elementary School 3400 Overseas Highway, Marathon, FL 33050	PK-5	4.5 mi
Marathon School 350 Sombrero Beach Road, Marathon, FL 33050	6-12	3.6 mi

Disclaimer: School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 420 11th St

Date

Details

Price

Change

Source

9/22/2026

Sold

$2,775,000

-5.9%

MLS

7/03/2026

Listed

$2,949,000

—

MLS

Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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Beds
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Total Baths
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Beds
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Beds
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Beds
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Total Baths
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420 11th Street, Key Colony, FL 33051 (MLS# 620520) is a Duplex property that was sold at $2,775,000 on September 22, 2026. Want to learn more about 420 11th Street? Do you have questions about finding other Duplex real estate for sale in Key Colony? You can browse all Key Colony real estate or contact a Coldwell Banker agent to request more information.

420 11th St Key Colony, FL 33051