SOLD MAY 13, 2026

Sold on May 2026

$825,000

•

1,184

sq ft

421 5Th St, Key Colony, FL 33051

Track this home’s value and nearby sales activity

About this home

Check out this Turn-Key 3 bed 2 bath Waterfront Key Colony Beach home with 30' of Concrete Dockage. Conveniently located close to the Cabana Club and Restaurants, this established vacation rental can be sold furnished. Tile Floors, Granite Counters, Stainless Appliances and a separate washer and dryer room. Great Dockage on a Clear Canal with super easy ocean access. With some personal touches this can be your perfect home in paradise. Set up your showing today!

Single-familyProperty Type

1959Year Built

3,300 sq ftLot Size

$697Price/Sq.Ft.

Listed by Chase Foster • Coldwell Banker Schmitt Real Estate Co.

Bought with Derrick Johnson • Coco Plum Real Estate

Redfin checked: a few seconds ago

•Source:FLKMLS #618954

Redfin Estimate

$901,412

$76K since sold in May 2026$6,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 13.7% higher than the average sale price ($793K) of 6 comparable homes.

SOLD MAR 9, 2026
$850,000
A
3 beds2 baths1,184 sq ft
431 5th St, Key Colony Beach, FL 33051
SOLD JUL 8, 2026
$775,000
B
2 beds2 baths885 sq ft
191 5Th St, Key Colony Beach, FL 33051
SOLD JUL 20, 2026
$800,000
C
2 beds2 baths1,023 sq ft
741 9Th St, Key Colony Beach, FL 33051
SOLD JAN 6, 2026
$895,000
D
2 beds2 baths1,185 sq ft
290 4th St, Key Colony, FL 33051
SOLD JUL 17, 2026
$950,000
E
2 beds2 baths1,090 sq ft
11710 5th Avenue Ocean, Marathon, FL 33050
SOLD JUL 10, 2026
$485,000
F
2 beds2 baths973 sq ft
11105 3rd Avenue Ocean, Marathon, FL 33050

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Market trends in Key Colony Beach, FL

Last updated August 2026

Buyer's Market

Seller's Market

Buyer's market

Sale-to-List Price

95.6%

0.1% MoM

Median sale price

$1.6M

$254K MoM

Avg. days on market

184d

66 days MoM

Recently sold homes

7 MoM

New listings for sale

$479,000
2 beds1 bath768 sq ft
1297 73rd St Unit Ocean, Marathon, FL 33050
$990,000
3 beds2 baths1,242 sq ft
11285 3Rd Avenue Gulf, Marathon, FL 33050
$1,250,000
2 beds2.5 baths1,428 sq ft
96 Avenue C #4, Marathon, FL 33050
$1,295,000
3 beds2 baths1,236 sq ft
105 Santa Barbara, Marathon, FL 33050
$445,000
1 bed1.5 baths742 sq ft
2000 Coco Plum Dr #503, Marathon, FL 33050
$622,500
3 beds3 baths1,760 sq ft
410 101St St Ocean St Unit B, Marathon, FL 33050
$299,000
— beds— baths— sq ft
35 Sombrero Blvd Unit B22, Marathon, FL 33050
$275,000
— beds— baths— sq ft
35 Sombrero Blvd Unit B9, Marathon, FL 33050
3D WALKTHROUGH
$2,395,000
4 beds3 baths2,464 sq ft
211 S Anglers Dr S, Marathon, FL 33050
(305) 451-4078
$379,000
1 bed1.5 baths732 sq ft
2000 Coco Plum Dr #302, Marathon, FL 33050
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Sale and tax history for 421 5Th St

Sale History
Tax History

Date

Event

Price

FLKMLS #618954

May 13, 2026

Sold

$825,000

$697/sq ft

Mar 28, 2026

Contingent

—

Mar 24, 2026

Price Changed

$855,000

$722/sq ft

Mar 6, 2026

Listed

$885,000

$747/sq ft

FLKMLS #590409

Oct 8, 2020

Sold

$505,000

$427/sq ft

Mar 26, 2020

Listed

$524,000

$443/sq ft

+41

Offered at 524,000! This Adorable beachy, canal-front Vacation Rental has 3 bedrooms, 2 baths and 30 ft dock! Updated windows, stainless steel appliances, granite counter tops, beautiful wood cabinets and tile through out the spacious half duplex! Plenty of room for entertaining and would make a great vacation rental! Conveniently located on Key Colony Beach and walking distance to the Cabana Club! Call today for more information!

FLKMLS #584672

May 15, 2020

Listing Removed

—

Mar 6, 2019

Listed

$555,000

$469/sq ft

FLKMLS #540191

May 15, 2020

Listing Removed

—

Feb 5, 2007

Listed

$1,399,900

$1,182/sq ft

FLKMLS #587279

Mar 23, 2020

Listing Removed

—

Sep 9, 2019

Listed

$524,900

$443/sq ft

Stellar MLS as Distributed by MLS Grid #U7752426

Oct 2, 2015

Sold

$449,000

$379/sq ft

Oct 1, 2015

Listed

$449,000

$379/sq ft

FLKMLS #565377

Oct 2, 2015

Sold

$449,000

$379/sq ft

Sep 25, 2014

Listed

$449,000

$379/sq ft

FLKMLS #547474

Jul 21, 2010

Listing Removed

—

Jan 3, 2009

Listed

$699,000

$590/sq ft

FLKMLS #544038

Jul 21, 2010

Listing Removed

—

Jan 11, 2008

Listed

$1,390,000

$1,174/sq ft

FLKMLS #518913

Nov 14, 2003

Listing Removed

—

Nov 10, 2003

Listed

$489,000

$413/sq ft

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

00073790-000000

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Mar 6, 2026.

Property details

Parking

Parking / Garage Information
Vehicle Storage: Open Parking, Off Street Parking

Interior

Virtual Tour

Interior Features
Interior Features: Granite Counter Top, Storage, Smoke Alarms
Flooring: Tile Floor
Windows/Doors: Other Windows/Doors
Heating: Electric
Cooling/Heating: Central A/C, Ceiling Fans
Appliances: Washer, Stainless Steel Appl, Microwave, Oven, Refrigerator, Dishwasher, Dryer
Furnished: Furnished

Bathroom Information
# of Full Baths: 2

Specialty Room Information
Specialty Rooms: Laundry Room

Exterior

Boat Slip/Dock Information
Dockage: Dock Length: 30
Dockage: Seawall: Concrete
Dockage: Dock: Concrete

Exterior Features
Exterior Features: Storage
Shutters: Panel

Security
Patrolled Area

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

Property Information
Deed Restrictions: Unknown
Pets: Pets Allowed
Rentals Allowed: Yes
Min Rental Days: 7

Lot Information
Acres: 0.08
Zoning: R-2B - Key Colony Two Family
Land Size: Less Than 1/4 Acre
Control Depth: 4
Flood Zone: AE

Building Information
Year Built: 1,959
Sq. Ft. Source: Property Data Card
Building Style: Above Flood: Unknown
Construction: CBS, Combo Construction
Roof: Shingle Roof

Subdivision/Neighborhood
Subdivision: Key Colony Bch Club (53.5)
Marathon Neighborhood: Marathon East - Gulf (Airport to Vaca)

Financial

Tax Information
Taxes: $6,852.05
Tax Year: 2,025
Tax Exemptions: None

Financial Information
Terms: Cash, Conventional

Utilities

Utility Information
Utilities: FKAA, Cable Available, Elect Separate Meter, Water Separate Meter, Buyer to Verify, Municipal Sewer
Pre-Wired: Cable
Has Public Sewer Hook-up

Location

Homeowners Association Information
Association Info: 1st Right of Refusal: No
Association Info: Association Fee $: 0.00
Fee Includes: None

Location Information
Side: Ocean
Mile Marker: 53.50
Directions: From US-1, turn onto Sadowski Causeway. Continue straight and follow the curve to the left and then take a left onto 5th street. Home is down on the left hand side

Neighborhood Features
Tennis Courts, Bike Paths

Public facts

Beds: —
Baths: —
Sq. Ft.: —
Stories: —
Lot Size: —
Style: Single Family Residential
Year Built: —
Year Renovated: —
County: Monroe County
APN: 00073790-000000

Home facts updated by county records on Mar 6, 2026

Around this home

Schools

Stanley Switlik Elementary School

Public PreK-5 • Assigned • 4.9mi

5/10

Marathon School

Public 6-12 • Assigned • 4.0mi

5/10

Provided by GreatSchools

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

91/ 100

Exceptional sunlight

Sunscore

There appears to be minimal shading by surrounding buildings, terrain, and vegetation.

9.2 hrs

6.6 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$857,000 – $1.04M

Sell confidently with a local market expert in Key Colony.

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New listings for sale in 33050

$479,000

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$990,000

3 beds2 baths1,242 sq ft

11285 3Rd Avenue Gulf, Marathon, FL 33050

$1,250,000

2 beds2.5 baths1,428 sq ft

96 Avenue C #4, Marathon, FL 33050

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105 Santa Barbara, Marathon, FL 33050

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2000 Coco Plum Dr #503, Marathon, FL 33050

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410 101St St Ocean St Unit B, Marathon, FL 33050

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— beds— baths— sq ft

35 Sombrero Blvd Unit B22, Marathon, FL 33050

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— beds— baths— sq ft

35 Sombrero Blvd Unit B9, Marathon, FL 33050

3D WALKTHROUGH

$2,395,000

4 beds3 baths2,464 sq ft

211 S Anglers Dr S, Marathon, FL 33050

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Home values near 421 5Th St

Data from public records.

Address	Redfin Estimate
371 5th Street, Key Colony Beach, FL 3 Beds \| 3 Baths \| 2252 Sq. Ft.	$1,258,304
411 5th Street, Key Colony Beach, FL 3 Beds \| 3 Baths \| 2260 Sq. Ft.	$1,317,417

Address	Redfin Estimate
440 5th Street, Key Colony Beach, FL 4 Beds \| 2 Baths \| 1729 Sq. Ft.	$1,461,785
420 5th Street, Key Colony Beach, FL 3 Beds \| 2 Baths \| 1316 Sq. Ft.	$1,513,852

Address	Redfin Estimate
381 5th Street, Key Colony Beach, FL 2 Beds \| 2.5 Baths \| 1344 Sq. Ft.	$981,731
391 5th Street, Key Colony Beach, FL 2 Beds \| 2.5 Baths \| 1344 Sq. Ft.	$1,024,644

Property information provided by FLKMLS when last listed in 2026. This data may not match . Learn more.

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421 5Th St, Key Colony, FL 33051

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About this home

Redfin Estimate

Market trends in Key Colony Beach, FL

Homeowner tools

Sale and tax history for 421 5Th St

Public record

Property details

Parking

Interior

Exterior

Financial

Utilities

Location

Public facts

Around this home

Schools

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 33050

Home values near 421 5Th St

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