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$2,949,000

  • For Sale
  • Active
  • Duplex
  • 6 Beds
  • 4 Full Baths
  • 3,392 Sq. Ft.
  • Updated 7 days ago
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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 for 420 11th St

General

  • Price: $2,949,000
  • Taxes: $25,465 (2025)
  • Status: Active
  • Type: Duplex
  • Source: 927
  • MLS ID: 620520
  • Updated: 7/6/2026
  • Added to Site: 11 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

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Listing agent

— 420 11th St —

  • Lisa H Ferringo

    Coldwell Banker Schmitt Real Estate Co

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 420 11th St

School District:Monroe County School District, Middle Torch Key, FL
NameGradesDistance
Stanley Switlik Elementary School
3400 Overseas Highway, Marathon, FL 33050
PK-54.5 mi
Marathon School
350 Sombrero Beach Road, Marathon, FL 33050
6-123.6 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 Get Price Alerts and Save Property

Date
Details
Price
Change
Source
7/03/2026
Listed
$2,949,000
-7.84%
MLS
6/21/2022
Sold
$3,200,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 420 11th St

Year
Property Taxes
Change
Tax Assessment
Change
2025
$25,466
-6%
$2,624,461
-4%
2024
$27,052
4%
$2,720,581
5%
2023
$25,962
162%
$2,589,794
190%
2021
$9,892
-12%
$894,191
-28%
2022
$11,197
13%
$1,249,703
46%
2021
$9,892
5%
$857,208
-2%
2019
$9,392
15%
$872,680
11%
2018
$8,202
-8%
$784,709
-11%
2017
$8,915
32%
$884,758
33%
2016
$6,755
8%
$666,217
10%
2015
$6,227
6%
$603,276
17%
2014
$5,898
-3%
$514,104
-1%
2013
$6,060
—
$517,025
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Estimate the Cost for 420 11th St

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*These costs are estimates, and the interest rates assume exceptional credit standing.

Be ready to buy your new home!

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NMLS#: 1598647

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

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420 11th Street, Key Colony, FL 33051 (MLS# 620520) is a Duplex property with 6 bedrooms and 4 full bathrooms. 420 11th Street is currently listed for $2,949,000 and was received on July 03, 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.

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