For sale

Price cut: $50K (6/22)

$1,800,000

600 12th St, Marathon, FL 33051

4beds

1,860sqft

$10,284/mo

Get pre-qualified

Single Family Residence

Built in 1971

8,276 Square Feet Lot

$1,738,100 Zestimate^®

$968/sqft

$-- HOA

What's special

Large beautiful pool

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.

291 days

1,092

58

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 4
Bathrooms: 3
Full bathrooms: 3

Appliances

Included: Dishwasher, Refrigerator, Range, Oven, Microwave

Features

Flooring: Tile
Furnished: Yes

Interior area

Total structure area: 1,860
Total interior livable area: 1,860 sqft

Property

Parking

Parking features: Garage
Has garage: Yes

Features

Exterior features: Chickee Hut
Has private pool: Yes
Pool features: In Ground, Concrete
On waterfront: Yes

Lot

Size: 8,276 Square Feet

Details

Additional structures: Shed(s)
Parcel number: 00077460000000
Zoning: R-1A - Key Colony Single Family

Construction

Type & style

Home type: SingleFamily
Property subtype: Single Family Residence

Materials

Condition

Year built: 1971

Utilities & green energy

Utilities for property: Water Separate Meter, Elect Separate Meter

Community & HOA

Community

Subdivision: Key Colony Beach (53.5)

HOA

Has HOA: No
Services included: None

Location

Region: Marathon

Financial & listing details

Price per square foot: $968/sqft
Tax assessed value: $1,410,387
Annual tax amount: $10,867
Date on market: 10/24/2025

Estimated market value

$1,738,100

$1.65M - $1.83M

$5,624/mo

Price history

Date	Event	Price
6/22/2026	Price change	$1,800,000-2.7%$968/sqft
Source: Key West AOR #617021 Report a problem
12/9/2025	Price change	$1,850,000-2.6%$995/sqft
Source: Key West AOR #617021 Report a problem
10/24/2025	Listed for sale	$1,900,000+12.4%$1,022/sqft
Source: MLKAR #617021 Report a problem
12/9/2024	Sold	$1,689,900-5.6%$909/sqft
Source: FLKMLS #609901 Report a problem
9/30/2024	Contingent	$1,790,000$962/sqft
Source: MLKAR #609901 Report a problem
6/10/2024	Price change	$1,790,000-5.8%$962/sqft
Source: Key West AOR #609901 Report a problem
5/29/2024	Price change	$1,900,000-9.5%$1,022/sqft
Source: MLKAR #609901 Report a problem
5/7/2024	Listed for sale	$2,100,000+14.3%$1,129/sqft
Source: MLKAR #609901 Report a problem
1/30/2024	Listing removed	--
Source: Owner Report a problem
11/1/2023	Listed for sale	$1,837,800-26.5%$988/sqft
Source: Owner Report a problem
12/3/2022	Listing removed	--
Source: Key West AOR #601278 Report a problem
6/4/2022	Listed for sale	$2,499,000$1,344/sqft
Source: FLKMLS #601278 Report a problem
5/6/2022	Listing removed	--
Source: Owner Report a problem
5/6/2022	Price change	$2,499,000-10.8%$1,344/sqft
Source: Owner Report a problem
4/5/2022	Listed for sale	$2,800,000+237.8%$1,505/sqft
Source: Owner Report a problem
10/17/2016	Sold	$829,000+49.4%$446/sqft
Source: MLKAR #569941 Report a problem
8/2/2002	Sold	$555,000$298/sqft
Source: Public Record Report a problem

Public tax history

Year	Property taxes	Tax assessment
2025	$13,636 +25.5%	$1,410,387 +36%
2024	$10,868 +6.3%	$1,037,258 +10%
2023	$10,219 +12.5%	$942,962 +10%
2022	$9,087 +9.9%	$857,238 +10%
2021	$8,266 +7.6%	$779,307 +4.3%
2020	$7,679	$747,141 +1.2%
2019	$7,679 +1.1%	$737,981 -14.5%
2018	$7,595 -5.1%	$863,356 +20.6%
2017	$8,007 +15.4%	$716,082 +18.8%
2016	$6,936 +12.7%	$602,779 -4.3%
2015	$6,152	$629,588