600 12th St, Marathon, FL 33051
FOR SALE

600 12th St
Marathon, FL 33051

  • 4 Beds
  • 3 Baths
  • 1,860 sqft

$1,850,000

Original price: $1,900,000
Est. Mortgage $10,394/mo*

$1,850,000

Original price: $1,900,000
Est. Mortgage $10,394/mo*
4 Beds
3 Baths
1,860 sqft

Local Information

Map showing home location
© Google
-- mins to
Commute Destination

Description

A rare opportunity to own a premier piece of Key Colony Beach real estate. This spacious 4-bedroom, 3-bathroom home boasts high-demand features, making it immediately rental-ready for excellent income potential.The outdoor space is a renter's (and owner's!) delight: a large, beautiful pool, a classic Tiki hut for tropical shade, and a substantial 75-foot dock on a deep-water canal with a 16k lb. boat lift for easy access to world-class fishing and diving in the Florida Keys. Storage is a breeze with a dedicated garage for a car or golf cart.Don't miss this chance to secure a powerful income-producing property or your private waterfront getaway.

Home Highlights

Parking
Garage
Outdoor
Pool
View
Canal
HOA
None
Price/Sqft
$995
Listed
180+ days ago

Home Details for 600 12th St

Interior Features

Beds & Baths
Number of Bedrooms: 4Number of Bathrooms: 3Number of Bathrooms (full): 3
Dimensions and Layout
Living Area: 1860 Square Feet
Appliances & Utilities
Utilities: FKAA, Buyer to VerifyAppliances: Dishwasher, Microwave, Oven, Range, RefrigeratorDishwasherMicrowaveRefrigerator
Gas & Electric
Electric: Elect Separate Meter
Windows, Doors, Floors & Walls
Flooring: Tile
Levels, Entrance, & Accessibility
Floors: Tile
View
Has a ViewView: Canal
Room & Shared Space
Shared space is furnished

Exterior Features

Exterior Home Features
Roof: MetalOther Structures: Chickee Hut, Shed(s)Has a Private Pool
Parking & Garage
No CarportHas a GarageNo Attached GarageNo Open ParkingParking Spaces: 3Parking: Garage
Pool
Pool: In Ground, ConcretePool
Frontage
WaterfrontWaterfront: Canal Front, Waterfront, Seawall: Concrete, Dock Length: 75, Dockage: Boat LiftOn Waterfront
Water & Sewer
Sewer: Public Sewer

Days on Market

Days on Market: 180+

Property Information

Year Built
Year Built: 1971
Property Type / Style
Property Type: ResidentialProperty Subtype: Single Family Residence
Building
Construction Materials: CBS
Property Information
Parcel Number: 00077460000000

Price & Status

Price
List Price: $1,850,000Price Per Sqft: $995

Active Status

MLS Status: Active

Location

Direction & Address
City: Key ColonyCommunity: Key Colony Beach (53.5)

Agent Information

Listing Agent
Listing ID: 617021

HOA

HOA Fee Includes: NoneAssociation for this Listing: Marathon/Lower KeysNo HOAHOA Fee: No HOA Fee

Lot Information

Lot Area: 8276.4 sqft

Listing Info

Special Conditions: Standard

Rental Terms, Policies & Fees

Furnished

Miscellaneous

Mls Number: 617021Water ViewWater View: Canal
Last check for updates: about 9 hours ago
Listing courtesy of Derrick A. Johnson, (786) 546-6678
Coco Plum Real Estate
Kelly M. Willey, (305) 771-1505
Coco Plum Real Estate
Originating MLS: Marathon/Lower Keys
Source: FLKMLS, MLS#617021

Price History for 600 12th St

DatePriceEventSource
12/09/2025$1,850,000PriceChange
Key West AOR #617021
10/24/2025$1,900,000Listed For SaleMLKAR #617021
12/09/2024$1,689,900Sold
Key West AOR #609901
09/30/2024$1,790,000ContingentMLKAR #609901
06/10/2024$1,790,000PriceChange
Key West AOR #609901
05/29/2024$1,900,000PriceChange
MLKAR #609901
05/07/2024$2,100,000Listed For SaleMLKAR #609901
01/30/2024ListingRemovedN/A
11/01/2023$1,837,800Listed For SaleN/A
12/03/2022ListingRemovedKey West AOR #601278
06/04/2022$2,499,000Listed For SaleFLKMLS #601278
05/06/2022ListingRemovedN/A
05/06/2022$2,499,000PriceChange
N/A
04/05/2022$2,800,000Listed For SaleN/A
10/17/2016$829,000Sold
MLKAR #569941
08/02/2002$555,000Sold
N/A

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Property Tax and Assessment

Year2025
Tax$13,636
Assessment$1,410,387
Home facts updated by county records

Comparable Sales for 600 12th St

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
0.07
Single-Family Home
$2,550,000
10/17/25
3
2.5
2,077
0.08
Single-Family Home
$1,600,000
02/03/26
3
2
1,776
0.05
Single-Family Home
$2,237,500
04/20/26
3
2
1,584
0.06
Single-Family Home
$1,875,000
12/08/25
2
3
1,480
0.18
Single-Family Home
$2,070,000
05/19/25
3
2.5
2,440
0.16
Single-Family Home
$2,400,000
04/24/26
3
2.5
2,521
0.20
Single-Family Home
$1,340,000
04/10/26
4
3
1,813
0.21
Single-Family Home
$1,690,000
07/15/25
4
3
2,293
0.08
Single-Family Home
$1,075,000
03/10/26
3
3
1,770
0.44
Single-Family Home
$1,550,000
05/16/25
3
3
1,832

Assigned Schools

These are the assigned schools for 600 12th St.
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

What Locals Say about Key Colony Beach

At least 4 Trulia users voted on each feature.
  • 100 % Say it's quiet

  • 100 % Say it's walkable to restaurants

  • 91 % Say yards are well-kept

  • 90 % Say parking is easy

  • 86 % Say car is needed

  • 80 % Say it's dog friendly

  • 80 % Say people would walk alone at night

  • 78 % Say streets are well-lit

  • 57 % Say they plan to stay for at least 5 years

  • 50 % Say there's holiday spirit

  • 50 % Say there are sidewalks

  • 50 % Say there are community events

  • 50 % Say there's wildlife

  • 38 % Say kids play outside

  • 33 % Say neighbors are friendly

  • 33 % Say it's walkable to grocery stores

Learn more about our methodology.
  • David Sloan
    "Lived here for over a month, almost everyone is friendly as well as mostly pet friendly. I own a pitbull that is my service dog, majority comes up to love him him, few assume he isn’t friendly."
  • L. F.
    "Not many children live here. Lots of vacation and rental homes. They have occupants changing all the time or they stand empty for months on end. "
  • LWF
    "Sunday afternoon live concerts in the park in winter. Craft fairs. The Christmas boat parade. The fishing club puts on an annual spring clambake."
  • Dm2953
    "Key Colony Beach is a community minded incorporated small city with parks, its own sewer system, police, and safety."

LGBTQ Local Legal Protections

Derrick A. Johnson, Coco Plum Real Estate
Agent Phone: (786) 546-6678
MLS Internet Data Exchange (IDX) information is provided exclusively for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing, and that the data is deemed reliable but is not guaranteed accurate by the Florida Keys Board of Realtors.
600 12th St, Marathon, FL 33051 is a 4 bedroom, 3 bathroom, 1,860 sqft single-family home built in 1971. This property is currently available for sale and was listed by FLKMLS on Oct 24, 2025. The MLS # for this home is MLS# 617021.