Experience the ease and elegance of true island living in this beautifully updated residence, where every detail has already been perfected. Recently completed enhancements include a custom-designed kitchen and bathrooms, new flooring, impact sliders, upgraded lighting, and more leaving nothing for you to do except arrive with your swimsuit, flip-flops, and Keys lifestyle essentials. Bring the boat, kayak, snorkeling or diving gear and start enjoying paradise from day one. Inside, soaring ceilings and abundant natural light create an airy, inviting atmosphere throughout the open living and dining areas. The stunning gourmet kitchen is both functional and refined, offering the ideal setting for cooking and entertaining. The luxurious primary suite serves as a private retreat, featuring a spa-inspired bathroom with a glass-enclosed shower, double vanity, and a relaxing soaking tub. Impact sliders open to a spacious screened porch that seamlessly extends your living and entertaining space outdoors. An elevator provides effortless access for all. The lower level offers an additional 630 sq ft of air-conditioned space, including a storage room and full bathroom perfect for guests, hobbies, or gear. Expansive paved patio areas, both covered and uncovered, flow to your 37.5 ft of canal frontage, complete with a 16,000 lb elevator boat lift. There is ample parking for all your vehicles and toys. This exceptional property offers the convenience of walking or biking the entire 15-Street island to reach restaurants, the marina, pickleball courts, golf, playgrounds, City Hall, the Police and Building Departments, Post Office, and beautiful Sunset Park. Welcome home to 641 9th Street 'Your own slice of paradise, ready for you now. '
Single-familyProperty Type
1989Year Built
4,125 sq ftLot Size
$1,035Price/Sq.Ft.
Listed by Karen Raspe• Ocean Sotheby's International
Listed by Jo Ann Cook• Ocean Sotheby's International
Bought with Karen Raspe• Ocean Sotheby's International
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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
18
3 MoM
Provided by Redfin
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Rental estimate
Est. $2,880 per month, based on comparable rentals
Sale and tax history for 641 9th St
Sale History
Tax History
Date
Event
Price
FLKMLS #617507
Apr 28, 2026
Sold
$1,300,000
$1,035/sq ft
Apr 7, 2026
Contingent
—
Mar 7, 2026
Price Changed
$1,399,000
$1,114/sq ft
Nov 28, 2025
Listed
$1,425,000
$1,135/sq ft
FLKMLS #612404
Dec 19, 2024
Sold
$1,200,000
$955/sq ft
Nov 22, 2024
Listed
$1,280,000
$1,019/sq ft
+36
This exceptional stilted half duplex with elevator offers an open concept floorplan with soaring ceilings, creating a spacious and inviting atmosphere. The living areas, including the primary bedroom, seamlessly flow onto a screened patio, offering perfect indoor-outdoor living with breathtaking canal views. Step outside to the paved dockside patio, ideal for relaxing or entertaining by the deep, clear canal. For added convenience, there is off-street RV or trailer parking and covered parking Even a versatile bonus room that can be tailored to your needs, whether as a mancave, workshop, gym, office. .. the possibilities are endless. Located just 5 minutes from the open ocean and Gulf, this property is a paradise for boaters, anglers, and water enthusiasts, with world-class fishing, diving, cruising, snorkeling, and sandbar activities right at your doorstep. Marathon Airport is only 10 minutes away, while Key West International Airport is a quick 1-hour drive. Miami International Airport is 2 hours & Ft Lauderdale Intn'll Airport is 2.5 hours, offering easy access for travel. Enjoy close proximity to marinas, dining, shopping, golf, tennis, pickleball, basketball, bocce ball, and horseshoes, as well as essential services like the post office and a picturesque Sunset Park. Key Colony offers the perfect blend of luxury, convenience, and outdoor recreation.
FLKMLS #553670
Mar 7, 2011
Sold
$617,500
$492/sq ft
Dec 5, 2010
Listed
$699,000
$557/sq ft
+19
Immaculate, turn key, stilted half duplex with a brand new glass elevator. Love the higher view but hate the stairs? This place is for you! All systems have been upgraded/updated including new roof, appliances, windows and doors. Custom baths with designer glass doors, jetted tub and beautiful tile surrounds. Dock has new stringers and Tek Dek covering. There is nothing left to do except ''FISH''!
FLKMLS #511841
Jul 15, 2002
Sold
$405,000
$322/sq ft
Jun 17, 2002
Listed
$425,000
$338/sq ft
FLKMLS #502671
Oct 16, 2000
Sold
$300,000
$239/sq ft
May 31, 2000
Listed
$339,000
$270/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$9,814 (+57.5%)
$486,750 + $508,255
$995,005
2024
$6,231 (+3.3%)
2023
$6,030 (+4.0%)
2022
$5,800 (−0.8%)
2021
$5,848 (+17.6%)
$260,906 + $318,690
$579,596
2020
$4,973 (−0.2%)
$247,500 + $219,108
$466,608
2019
$4,985 (+3.1%)
$247,500 + $219,108
$466,608
2018
$4,837 (+0.5%)
$247,500 + $224,209
$471,709
2017
$4,813 (−9.6%)
$247,500 + $234,139
$481,639
2015
$5,324 (+2.7%)
$247,500 + $229,010
$476,510
2014
$5,182
Public record
Public record
Permits
Beds
2
Baths
3
Stories
2
Lot width
—
Lot depth
—
Lot size
4,125 Sq. Ft.
Year renovated
2014
Sq. Ft.
1,256
Year built
1989
Style
Single Family Residential
County
Monroe County
APN
0566 33 00075730000100
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 10, 2026.
May 1, 2025 • Final
Building
Demolish and reinstall a kitchen and bathrooms. Install new tile throughout the home and two new impact sliding glass doors.
Bathroom
Kitchen
Remodel
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Parking
Parking / Garage Information
Vehicle Storage: Carport, RV Parking Open, Covered Parking, Trailer Storage, Off Street Parking, Guest Parking
Sq. Ft. Remarks: 630 sf Air Conditioned Lower Level with Full Bath (permitted)
Building Style: Above Flood: Yes
Building Style: Stilt Column Height: Medium - 5Ft - 9Ft
Construction: CBS
Roof: Metal Roof
Subdivision/Neighborhood
Subdivision: Key Colony Beach (53.5)
Marathon Neighborhood: Marathon East - Gulf (Airport to Vaca)
Financial
Tax Information
Taxes: $9,422
Tax Year: 2,021
Tax Exemptions: None
Financial Information
Terms: Cash, VA, Conventional
Utilities
Utility Information
Utilities: FKAA, Water Separate Meter, Cable Available, Elect Separate Meter, Buyer to Verify, Community Sewer Plant
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: Overseas Hwy turn at light at mile marker 53.5 onto Sadowski / KCB Causeway. Turn right onto W. Ocean Dr. Turn right onto 9th St and follow 3/4 way down to 641 9th is on the left.
Neighborhood Features
Community Boat Ramp, Bike Paths, Airstrip, Beach
Public facts
Beds: 2
Baths: 3.0
Sq. Ft.: 1,256
Stories: 2.0
Lot Size: 4,125 square feet
Style: Single Family Residential
Year Built: 1989
Year Renovated: 2014
County: Monroe County
APN: 0566 33 00075730000100
Home facts updated by county records on Jul 10, 2026
Around this home
Schools
Stanley Switlik Elementary School
Public PreK-5 • Assigned • 4.6mi
5/10
Marathon School
Public 6-12 • Assigned • 3.7mi
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 Beach, FL • 33051
Average low and high temperatures (°F)
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70
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
94/ 100
Exceptional sunlight
Sunscore
This home receives average direct sun exposure in Key Colony Beach. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
9.4 hrs
6.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.36M – $1.64M
Sell confidently with a local market expert in Key Colony Beach.