Recently Viewed Properties
See This Home
Save This Listing
Close

View All Photos

$815,000

  • For Sale
  • Active
  • Duplex
  • 2 Beds
  • 2 Full Baths
  • 900 Sq. Ft.
  • Updated 4 days ago
See This Home
Save This Home
See This Home
Save This Home
Half Duplex in the beautiful community of Key Colony Beach. Remodeled with top quality finishes. Entry doors are Anderson impact, windows are Dbl. Pane PGT, sliding glass doors are Low-E Anderson. All stainless appliances, granite counters, 7'' insulation in ceiling throughout, tile flooring, Key Colony Beach offers convenience to its own post office, restaurants, marina, shopping, par 3 golf course, pickleball and tennis courts, basketball, bocce ball, horseshoes. Marathon Airport is only 10 minutes away, Key West International Airport is a 1-hour drive.

Full Property Details for 341 3rd St

General

  • Price: $815,000
  • Taxes: $6,495 (2025)
  • Status: Active
  • Type: Duplex
  • Source: 927
  • MLS ID: 618795
  • Updated: 5/13/2026
  • Added to Site: 85 day(s) ago

Interior

  • Interior Features: Built-in Cabinets, Drapes/Blinds Incl, Granite Counter Top, Smoke Alarms, Storage
  • Appliances: Dishwasher, Dryer, Microwave, Oven, Range, Refrigerator, Washer
  • Flooring: Tile

Rooms

Bathrooms

  • Total Bathrooms: 2
  • Full Bathrooms: 2

Bedrooms

  • Total Bedrooms: 2

Other Rooms

  • Laundry: Laundry Room

Additional Information

  • Shared Amenities: Other Area Features, Fire Hydrant, Bike Paths, Beach, Tennis Court(s)
  • Security/Safety: Patrolled Area

Exterior

  • Exterior Features: Storage

Parking

  • Parking Features: Guest, Off Street

Location

  • Area: 17 - Vaca Cut - Both Sides Holiday Inn/Key Colony
  • County: Monroe
  • Subdivision: Key Colony Beach (53.5)
  • Driving Directions: Turn off US #1 (Overseas Highway) onto Key Colony Causeway. Bear left on E. Ocean Drive. Turn left onto 3rd St. Duplex is on the left about 2/3 the way down.

Community

  • Assoc. Fees Include: None
  • Pets Allowed: Yes

Heating & Cooling

  • Air Conditioning: Yes
  • Cooling Type: Ductless, Ceiling Fans(s)
  • Heating Type: Ductless

Structural Information

  • Construction Status: Updated/Remodeled
  • Construction: CBS
  • Roof: Metal
  • Windows/Doors: Impact Rstnce Doors, Impact Rstnce Window, Other Windows/Doors, Shutters
  • Square Feet: 900
  • Sq. Ft. Source: Property Data Card
  • Year Built: 1971
  • Property Condition: Updated/Remodeled

Lot Features

  • Property View: Canal
  • Lot Size (Acres): 0.08
  • Lot Size (Sq. Ft.): 3,388
  • Lot Size Source: Property Data Card
  • Lot Dimensions: x
  • Zoning: R-1B - Key Colony Single Family

Water Features

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

Financial Considerations

  • Tax Amount: $6,495.98
  • Tax Year: 2025
  • Terms: Cash, Conventional

Disclosures and Reports

  • Legal Description: BK 3 S 1/2 LT 13 KEY COLONY BEACH PB3-120 SHELTER KEY OR380-643 OR463-874 OR802-1762 OR937-324 OR1585-2444/51 OR1587-160
  • Flood Zone: AE, AE
  • APN: 00072790-000000

Listed by Florida Keys Real Estate Group, Bonnie Sanderson (305) 393-2691 and Florida Keys Real Estate Group, Rachel Lynne Keller (305) 393-3076

Quickly Find Out More

* Indicates a required field

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Send Message, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If an Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby’s International Realty®). I acknowledge that I have read and agree to the Terms of Use and Privacy Notice.

We Value Your Privacy

Listing agents

— 341 3rd St —

  • Bonnie Sanderson

    Florida Keys Real Estate Group

  • Rachel Lynne Keller

    Florida Keys Real Estate Group

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 341 3rd St

School District:Monroe County School District, Middle Torch Key, FL
NameGradesDistance
Stanley Switlik Elementary School
3400 Overseas Highway, Marathon, FL 33050
PK-55 mi
Marathon School
350 Sombrero Beach Road, Marathon, FL 33050
6-124.1 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 341 3rd St Get Price Alerts and Save Property

Date
Details
Price
Change
Source
2/22/2026
Listed
$815,000
3.16%
MLS
8/01/2022
Sold
$790,000
—
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 341 3rd St

Year
Property Taxes
Change
Tax Assessment
Change
2024
$7,688
—
$634,494
-15%
2024
$7,688
7%
$744,529
8%
2023
$7,165
60%
$690,433
73%
2021
$4,466
-9%
$399,035
-23%
2022
$4,933
10%
$517,649
36%
2021
$4,466
3%
$380,669
-5%
2019
$4,322
5%
$399,067
1%
2018
$4,113
—
$393,715
-3%
2017
$4,118
—
$404,915
5%
2016
$4,098
248%
$385,608
218%
2015
$1,178
-1%
$121,091
1%
2014
$1,189
—
$120,130
1%
2013
$1,190
—
$118,355
—
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 341 3rd St

$
Down Payment
%
$
%

$
$

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

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Listed by Florida Keys Real Estate Group, Bonnie Sanderson (305) 393-2691 and Florida Keys Real Estate Group, Rachel Lynne Keller (305) 393-3076

Similar Properties near 341 3rd St

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

191 5th St, Key Colony, FL 33051 - Photo 1 Just Listed
$799,000

191 5th St  Key Colony, FL 33051

  • Duplex
  • Active
  • Updated 2 days ago
  • 2
    Beds
  • 2
    Total Baths
  • 885
    Sq. Ft.
Listed by RE/MAX All Keys Real Estate, Kelly Randin
271 9th St, Key Colony Beach, FL 33051 - Photo 1
$838,000

271 9th St  Key Colony Beach, FL 33051

  • Duplex
  • Active
  • Updated 4 days ago
  • 2
    Beds
  • 2
    Total Baths
  • 1,020
    Sq. Ft.
Listed by Ocean Sotheby's International, Karen D Raspe and Ocean Sotheby's International, Ally Kelley
17 Man-O-War Dr, Marathon, FL 33050 - Photo 1
$770,000

17 Man-O-War Dr  Marathon, FL 33050

  • Duplex
  • Active
  • Updated 4 days ago
  • 2
    Beds
  • 2
    Total Baths
  • 834
    Sq. Ft.
Listed by Key Colony Beach Realty, Shannon Butler and Key Colony Beach Realty, Cara Ann O'Neill
18 Man-O-War Dr, Marathon, FL 33050 - Photo 1
$770,000

18 Man-O-War Dr  Marathon, FL 33050

  • Duplex
  • Active
  • Updated 4 days ago
  • 2
    Beds
  • 2
    Total Baths
  • 834
    Sq. Ft.
Listed by Key Colony Beach Realty, Cara Ann O'Neill and Key Colony Beach Realty, Shannon Butler

Just Listed near 341 3rd St

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

101 11th Street Ocean, Marathon, FL 33050 - Photo 1 Just Listed
$485,000

101 11th Street Ocean  #24  Marathon, FL 33050

  • Single Family
  • Active
  • Updated 1 day ago
  • 2
    Beds
  • 2
    Total Baths
  • 960
    Sq. Ft.
229 Pescayo Ave, Marathon, FL 33050 - Photo 1 Just Listed
$2,500,000

229 Pescayo Ave  Marathon, FL 33050

  • Single Family
  • Active
  • Updated 3 days ago
  • 4
    Beds
  • 5
    Total Baths
  • 2,040
    Sq. Ft.
Listed by Coldwell Banker Schmitt Real Estate Co., Kim Rabito Show
59720 Overseas Hwy, Marathon, FL 33050 - Photo 1 Just Listed
$3,400,000

59720 Overseas Hwy  #10  Marathon, FL 33050

  • Single Family
  • Active
  • Updated 4 days ago
  • 5
    Beds
  • 5
    Total Baths
  • 3,013
    Sq. Ft.
Listed by Internet Realty of the Florida Keys Inc, Sabrina Acevedo and Internet Realty of the Florida Keys, Gregory A Maclaren
12411 Overseas Hwy, Marathon, FL 33050 - Photo 1 Just Listed
$685

12411 Overseas Hwy  Marathon, FL 33050

  • Lots/Land
  • Active
  • Updated 5 days ago
  • 1.5
    Acres

Price Reduced near 341 3rd St

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

11250 5th Ave Gulf Ave, Marathon, FL 33050 - Photo 1 Price Reduced
-$41,000 (-2.85%)
$1,399,000

11250 5th Ave Gulf Ave  Marathon, FL 33050

  • Single Family
  • Active
  • Updated 2 days ago
  • 5
    Beds
  • 3
    Total Baths
  • 1,904
    Sq. Ft.
Listed by Beycome of Florida, LLC, Steven Koleno
805 39th Street Gulf, Marathon, FL 33050 - Photo 1 Price Reduced
-$45,000 (-1.2%)
$3,695,000

805 39th Street Gulf  Marathon, FL 33050

  • Single Family
  • Active
  • Updated 3 days ago
  • 5
    Beds
  • 5
    Total Baths
  • 2,920
    Sq. Ft.
Listed by Re/Max Alliance Group
2919 Sombrero Blvd, Marathon, FL 33050 - Photo 1 Price Reduced
-$50,000 (-1.79%)
$2,749,000

2919 Sombrero Blvd  Marathon, FL 33050

  • Single Family
  • Active
  • Updated 3 days ago
  • 3
    Beds
  • 4
    Total Baths
  • 2,540
    Sq. Ft.
Listed by RE/MAX All Keys Real Estate, Kelly Randin
82 Tingler Ln, Marathon, FL 33050 - Photo 1 Price Reduced
-$399,000 (-11.09%)
$3,200,000

82 Tingler Ln  Marathon, FL 33050

  • Single Family
  • Active
  • Updated 5 days ago
  • 4
    Beds
  • 4
    Total Baths

Recent Sales near 341 3rd St

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

290 4th St, Key Colony Beach, FL 33051 - Photo 1 Sold
$895,000

290 4th St  Key Colony Beach, FL 33051

  • Duplex
  • Closed
  • Updated 3 days ago
  • 2
    Beds
  • 2
    Total Baths
  • 1,185
    Sq. Ft.
Listed by Berkshire Hathaway HomeServices Keys Real Estate, Tracy Chacksfield
Sold by Coldwell Banker Schmitt Real Estate Co., Lisa Wiebe
431 5th St, Key Colony Beach, FL 33051 - Photo 1 Sold
$850,000

431 5th St  Key Colony Beach, FL 33051

  • Single Family
  • Closed
  • 3
    Beds
  • 2
    Total Baths
  • 1,184
    Sq. Ft.
431 5th St, Key Colony Beach, FL 33051 - Photo 1 Sold
$850,000

431 5th St  Key Colony Beach, FL 33051

  • Duplex
  • Closed
  • Updated 3 days ago
  • 3
    Beds
  • 2
    Total Baths
  • 1,184
    Sq. Ft.
Listed by Engel & Völkers Marathon, Saara Victoria Staten and Florida Keys Real Estate Group, Kasey Platt
Sold by Berkshire Hathaway HomeServices Keys Real Estate, Nate Bartlett
421 5th St, Key Colony Beach, FL 33051 - Photo 1 Sold
$825,000

421 5th St  Key Colony Beach, FL 33051

  • Duplex
  • Closed
  • Updated 4 days ago
  • 3
    Beds
  • 2
    Total Baths
  • 1,184
    Sq. Ft.
Listed by Coldwell Banker Schmitt Real Estate Co., Chase Foster
Sold by Coco Plum Real Estate, Derrick A. Johnson

341 3rd Street, Key Colony Beach, FL 33051 (MLS# 618795) is a Duplex property with 2 bedrooms and 2 full bathrooms. 341 3rd Street is currently listed for $815,000 and was received on February 22, 2026. Want to learn more about 341 3rd Street? Do you have questions about finding other Duplex real estate for sale in Key Colony Beach? You can browse all Key Colony Beach real estate or contact a Coldwell Banker agent to request more information.

Tour this property