For sale

$999,000

Est. $7,134/mo —

•

1,288

sq ft

350 11th St, Key Colony Beach, FL 33051

About this home

Welcome to your own slice of paradise in the heart of Key Colony Beach! This well-maintained 2-bedroom, 2-bath half duplex offers the ideal blend of comfort, convenience, and the coveted Florida Keys boating lifestyle. The bright, open floor plan creates an inviting space for entertaining and everyday living, while the wraparound balcony provides the perfect place to enjoy the island breeze and relax outdoors. Boaters will appreciate 37.5 feet of dockage with quick access to both the Atlantic Ocean and the Gulf of America through nearby Vaca Cut, making it easy to enjoy world-class fishing, diving, and waterfront adventures. The attached garage provides ample space for parking, storage, and all of your fishing and boating gear. The backyard features desirable easterly exposure, allowing you to enjoy beautiful morning sun and cooler afternoons. Located in one of the Florida Keys' most sought-after waterfront communities, you'll be just moments from Key Colony Beach's exceptional amenities, including Sunset Park, the par-3 golf course, waterfront restaurants, scenic walking and biking paths, pickleball and tennis courts. Whether you're searching for a full-time residence, vacation retreat, or investment opportunity, this waterfront gem offers everything you need to experience the relaxed island lifestyle that makes Key Colony Beach so special.

Single-familyProperty Type

1980Year Built

4,125 sq ftLot Size

$776Price/Sq.Ft.

1 car garageParking

Listed by Natalie Ardi Ardis • Coldwell Banker Schmitt Real E

•305-481-3317 (agent)

•natalie@cbschmitt.com (agent)

•305-743-5181 (broker)

•brian.schmitt@cbschmitt.com (broker)

Listing updated: Aug 27, 2026 at 09:07am

Redfin checked: 3 minutes ago

•Source:MARMLS #A12057247

Payment calculator

$7,134 per month

Principal and interest$5,384

Property taxes

$534

HOA dues

Home insurance

$1,215

Utilities

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Open houses

No upcoming open houses.

Nearby open houses (8)

OPEN TODAY, 11AM TO 1PM
$844,000
3 beds3 baths1,929 sq ft
1133 W Ocean Dr #6, Key Colony Beach, FL 33051
OPEN TODAY, 6PM TO 8PM
$229,000
Land— sq ft
319 Tuskegee St, Marathon, FL 33050
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$2,799,000
4 beds4 baths2,472 sq ft
837 Copa D Oro, Marathon, FL 33050
OPEN FRI, 10AM TO 12PM
$864,000
2 beds2 baths1,037 sq ft
271 3rd St, Key Colony, FL 33051
OPEN SAT, 10AM TO 12PM
$465,000
2 beds2 baths962 sq ft
15 Sombrero Blvd Unit 212W, Marathon, FL 33050
OPEN SEP 26, 2PM TO 4PM
$1,195,000
3 beds3 baths1,512 sq ft
235 W Seaview Cir, Duck Key, FL 33050
OPEN SEP 27, 2PM TO 4PM
$2,150,000
5 beds3 baths2,719 sq ft
112 Bruce Ct, Marathon, FL 33050
OPEN SEP 27, 2PM TO 4PM
$2,100,000
5 beds3.5 baths1,924 sq ft
103 52nd St, Marathon, FL 33050

Around this home

Schools

K - 12
Preschool & daycare

Stanley Switlik Elementary School

Public PreK-5 • Assigned • 4.5mi

5/10

Marathon School

Public 6-12 • Assigned • 3.6mi

5/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Offer insights

350 11th St · $999,000

Strong offer

$999K and above

75% chance or better to win

Why $999K+ is a strong offer

DAYS ON MARKET

The average home goes pending in 133 days.

SALE-TO-LIST

Most homes are selling 6% below list price.

About offer insights

Property details

Interior
Exterior
Finance

Kitchen

Bathroom

Bedroom

Living

Dining

Interior features
Furnishing negotiable
Walk-in closet(s)
Attic

Bedrooms
Attic (listed as a room type)

Bathrooms
2 full bathrooms

Kitchen
Dishwasher
Electric range
Microwave
Refrigerator

Laundry & utility
Washer
Dryer
Electric water heater
Utility room
Storage room

Flooring
Carpet
Tile

Heating & cooling
Central heating
Central air conditioning

Sale and tax history for 350 11th St

Sale History
Tax History

Date

Event

Price

FLKMLS #620707

Aug 31, 2026

Contingent

—

Aug 26, 2026

Price Changed

$999,000

$776/sq ft

Jul 21, 2026

Listed

$1,100,000

$854/sq ft

+32

Welcome to your own slice of paradise in the heart of Key Colony Beach! This well-maintained 2-bedroom, 3-bath half duplex offers the ideal blend of comfort, convenience, and the coveted Florida Keys boating lifestyle. The bright, open floor plan creates an inviting space for entertaining and everyday living, while the wraparound balcony provides the perfect place to enjoy the island breeze and relax outdoors. Boaters will appreciate 37.5 feet of dockage with quick access to both the Atlantic Ocean and the Gulf of America through nearby Vaca Cut, making it easy to enjoy world-class fishing, diving, and waterfront adventures. The attached garage provides ample space for parking, storage, and all of your fishing and boating gear. The backyard features desirable easterly exposure, allowing you to enjoy beautiful morning sun and cooler afternoons. Located in one of the Florida Keys' most sought-after waterfront communities, you'll be just moments from Key Colony Beach's exceptional amenities, including Sunset Park, the par-3 golf course, waterfront restaurants, scenic walking and biking paths, pickleball and tennis courts. Whether you're searching for a full-time residence, vacation retreat, or investment opportunity, this waterfront gem offers everything you need to experience the relaxed island lifestyle that makes Key Colony Beach so special.

MARMLS #A12057247

Aug 27, 2026

Price Changed

$999,000

$776/sq ft

Jul 17, 2026

Listed

$1,100,000

$854/sq ft

Public Records

Apr 18, 2017

Sold

$535,000

$415/sq ft

FLKMLS #408531

Aug 17, 1998

Sold

$279,500

$217/sq ft

Jan 3, 1998

Listed

$284,500

$221/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$8,339 (+3.2%)

2024

$8,083 (+8.6%)

2023

$7,443 (+14.4%)

2022

$6,506 (+9.6%)

2021

$5,938 (+16.1%)

2020

$5,114 (+5.6%)

$247,500 + $233,675

$481,175

2019

$4,844 (+3.8%)

$247,500 + $233,675

$481,175

2018

$4,668 (−4.5%)

$247,500 + $205,988

$453,488

2017

$4,890 (−3.1%)

$247,500 + $242,621

$490,121

2016

$5,047 (+9.5%)

$247,500 + $248,088

$495,588

2015

$4,611 (+0.5%)

$247,500 + $248,088

$495,588

2014

$4,586

Public record

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

4,125 Sq. Ft.

Year renovated

2005

Finished Sq. Ft.

1,288

Unfinished Sq. Ft.

—

Total Sq. Ft.

1,288

Year built

1980

Style

Single Family Residential

County

Monroe County

APN

0566 33 00076760000100

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Apr 21, 2026.

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 Beach, FL • 33051

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

95/ 100

Exceptional sunlight

Sunscore

This home receives average direct sun exposure in the zip code. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.

9.4 hrs

7.1 hrs

JuneDecember

Provided by Shadowmap

Redfin Estimate for 350 11th St

$945,089

$54K under list price of $999K

Nearby comparable homes

The Redfin Estimate uses 6 recent nearby sales, priced between $800K to $1.4M.

SOLD DEC 1, 2025
$1,250,000 Last sold price
2 beds2 baths1,300 sq ft
470 9Th St, Key Colony Beach, FL 33051
$186/sq ft
6 years newer
SOLD OCT 16, 2025
$1,142,500 Last sold price
3 beds3 baths1,472 sq ft
601 8Th St, Key Colony Beach, FL 33051
7 years older
SOLD JUL 20, 2026
$800,000 Last sold price
2 beds2 baths1,023 sq ft
741 9Th St, Key Colony Beach, FL 33051
$6/sq ft
9 years older
SOLD APR 10, 2026
$1,340,000 Last sold price
4 beds3 baths1,813 sq ft
351 10th St, Key Colony Beach, FL 33051
$37/sq ft
12 years newer
SOLD MAR 4, 2026
$1,310,000 Last sold price
3 beds4 baths1,596 sq ft
640 9th St, Key Colony Beach, FL 33051
$45/sq ft
8 years newer
SOLD APR 10, 2026
$1,400,000 Last sold price
4 beds4 baths2,293 sq ft
570 9Th St, Key Colony Beach, FL 33051
$165/sq ft
26 years newer

Rental earnings

Est. $2,868 per month, based on comparable rentals

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