OFF MARKET

Off market feb 2015 for $650K

$1,263,313

•

1,719

sq ft

240 12TH St, Key Colony, FL 33051

About this home

Single-familyProperty Type

1966Year Built

8,250 sq ftLot Size

$735Est. Price/Sq.Ft.

Listed by Gail Borysiewicz • Gail's Island Realty, Inc.

Bought with Gail Borysiewicz • Gail's Island Realty, Inc.

Redfin checked: a minute ago

•Source:FLKMLS #565073

Redfin Estimate

$1,263,313

$613K since sold in February 2015$148K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 19.9% lower than the average sale price ($1.58M) of 6 comparable homes.

SOLD SEP 1, 2026
$1,790,000
A
4 beds3 baths1,860 sq ft
600 12Th St, Key Colony, FL 33051
SOLD JUL 31, 2026
$1,400,000
B
4 beds3 baths1,740 sq ft
11250 3rd Avenue Gulf, Marathon, FL 33050
SOLD APR 20, 2026
$2,237,500
C
3 beds2 baths1,584 sq ft
520 12Th St, Key Colony Beach, FL 33051
SOLD AUG 31, 2026
$1,450,000
D
4 beds3 baths1,926 sq ft
11295 3rd Avenue Gulf, Marathon, FL 33050
SOLD SEP 25, 2026
$1,330,000
E
2 beds2 baths1,646 sq ft
351 5th St, Key Colony, FL 33051
SOLD JUN 1, 2026
$1,260,000
F
3 beds2 baths1,424 sq ft
11270 3rd Avenue Gulf, Marathon, FL 33050

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Earn from this home

Rent

$2,783/mo

Redfin rental estimate

List your home for rent

Market trends in Key Colony Beach, FL

Last updated September 2026

Buyer's Market

Seller's Market

Buyer's market

Sale-to-List Price

95.3%

+0.0% MoM

Median sale price

$1.8M

$214K MoM

Avg. days on market

204d

20 days MoM

Recently sold homes

3 MoM

Provided by Redfin

Sale history for 240 12TH St

Public record

Beds

—

Baths

—

Stories

—

Lot width

—

Lot depth

—

Lot size

—

Year renovated

—

Sq. Ft.

—

Year built

—

Style

Single Family Residential

County

Monroe County

APN

00077630-000000

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 19, 2021.

Property details

Parking

Parking / Garage Information
Vehicle Storage: Carport, Off Street Parking, Covered Parking

Interior

Interior Features
Interior Features: Drapes/Blinds Incl, Smoke Alarms, Window Treatments, Storage, Split Bedroom, Granite Counter Top
Flooring: Tile Floor
Windows/Doors: Sliding Glass Doors
Cooling/Heating: Ceiling Fans, Heat, Ductless A/C, Central A/C
Appliances: Dishwasher, Washer, Refrigerator, Oven, Microwave, Dryer
Furnished: Furnished

Bathroom Information
# of Full Baths: 2

Exterior

Boat Slip/Dock Information
Dockage: Dock Length: 60
Dockage: Seawall: Concrete
Dockage: Boat Lift

Exterior Features
Porch/Balcony: Screened Patio
Shutters: Accordion

Security
Patrolled Area

Property Features
On Waterfront
Waterfront Type: Canal Front
Waterview: Canal View

Property Information
Deed Restrictions: No
Pets: Pets Allowed
Rentals Allowed: Yes

Lot Information
Acres: 0.19
Zoning: COZ - Key Colony County Zoning
Land Size: Less Than 1/4 Acre
Control Depth: 5

Building Information
Year Built: 1,966
Sq. Ft. Source: Tax Records
Building Style: Ground Level
Building Style: Above Flood: Yes
Construction: Concrete
Roof: Tar/Gravel Roof

Subdivision/Neighborhood
Subdivision: Key Colony Bch 1st Addn Amd Plat (53.5)

Financial

Tax Information
Taxes: $4,863.49
Tax Year: 2,013
Tax Exemptions: Homestead

Financial Information
Terms: Buyer Obtain Finance

Utilities

Utility Information
Utilities: Cable Available, FKAA
Pre-Wired: Cable
Has Public Sewer Hook-up

Location

Multi-Unit Information
# of Total Units: 1

Homeowners Association Information
Fee Includes: Cable, Sewer

Location Information
Side: Ocean
Mile Marker: 53.50

Neighborhood Features
Tennis Courts

Public facts

Beds: —
Baths: —
Sq. Ft.: —
Stories: —
Lot Size: —
Style: Single Family Residential
Year Built: —
Year Renovated: —
County: Monroe County
APN: 00077630-000000

Home facts updated by county records on Aug 19, 2021

Around this home

Schools

Stanley Switlik Elementary School

Public PreK-5 • Assigned • 4.4mi

5/10

Marathon School

Public 6-12 • Assigned • 3.5mi

5/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

Heat Factor

We're working on getting current and accurate heat risk information for this home.

10/10 Wind Factor

99% chance of strong winds in next 30 years

1/10 Air Factor

0 unhealthy days expected this year, 0 days in 30 years

Provided by First Street

Historical weather

Key Colony, FL • 33051

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 10 hours in June and 7.3 hours in December, placing it above the U.S. average for solar exposure.

10 hrs

7.3 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$1.20M – $1.45M

Sell confidently with a local market expert in Key Colony. 3 minutes to get started.

Nearby similar homes

$899,000

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$3,300,000

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3D WALKTHROUGH

$2,395,000

4 beds3 baths2,464 sq ft

211 S Anglers Dr S, Marathon, FL 33050

(305) 451-4078

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3 beds2 baths1,528 sq ft

800 11th St, Key Colony, FL 33051

$660,000

3 beds2 baths1,248 sq ft

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$679,999

3 beds2 baths1,272 sq ft

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Home values near 240 12TH St

Data from public records.

Address	Redfin Estimate
261 12th Street, Key Colony Beach, FL 4 Beds \| 4 Baths \| 3680 Sq. Ft.	$3,470,683
241 12th Street, Key Colony Beach, FL 5 Beds \| 4 Baths \| 4188 Sq. Ft.	$3,968,059

Address	Redfin Estimate
201 12th Street, Key Colony Beach, FL 3 Beds \| 2 Baths \| 2088 Sq. Ft.	$2,234,035
220 12th Street, Key Colony Beach, FL 4 Beds \| 3 Baths \| 2094 Sq. Ft.	$2,065,975

Address	Redfin Estimate
221 12th Street, Key Colony Beach, FL 3 Beds \| 2.5 Baths \| 1999 Sq. Ft.	$2,381,464
300 12th Street, Key Colony Beach, FL 5 Beds \| 4 Baths \| 2736 Sq. Ft.	$2,140,840

Property information provided by FLKMLS when last listed in 2014. This data may not match . Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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