Charming 2bd/2ba half duplex on canal in Key Colony Beach. New roof, New a/c, New water heater, New Paint. Kitchen features wood cabinets with soft close doors, granite countertops, stainless steel appliances. 18'' tile floors throughout. Both bedrooms are masters with full bathrooms. 1 bedroom with walk in closet with french doors. Living room has exposed beam cellings and multiple sets of french doors to let in light. Doors in the back lead to screened in back porch. Low maintenance landscaping. Extra long garage enough for 2 cars with laundry inside, enough space for workshop. 37.5' concrete seawall on 90' wide canal. Only minutes to fishing on Gulf or Ocean sides via Key Vaca Cut. Close to amenities including grocery and hardware stores, amazing restaurants and within minutes of keys attractions like FL Keys Aquarium Encounters, the Sea Turtle Hospital and more! Kitc
Single-familyProperty Type
1971Year Built
4,125 sq ftLot Size
$755Est. Price/Sq.Ft.
1 garage spacesParking
Listed by Samuel Williams• Coldwell Banker Schmitt Real Estate Co.
Bought with Janice Nagel• Coldwell Banker Schmitt Islamorada
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Earn from this home
Refinance
$0
Est. cash available
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Rent
$2,371/mo
Redfin rental estimate
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Market trends in Key Colony Beach, FL
Last updated October 2026
Buyer's Market
Seller's Market
Buyer's market
Sale-to-list price
94.5%
+0.4% MoM
Median sale price
$1.3M
$10K MoM
Avg. days on market
230d
27 days MoM
Recently sold homes
14
3 MoM
Provided by Redfin
Sale history for 231 9th St
Date
Event
Price
FLKMLS #597598
Oct 29, 2021
Sold
$670,000
$573/sq ft
Sep 7, 2021
Contingent
—
Sep 4, 2021
Listed
$699,000
$597/sq ft
FLKMLS #586568
Jul 23, 2019
Listing Removed
—
Jul 19, 2019
Listed
$2,250
$2/sq ft
FLKMLS #563159
Jun 30, 2014
Sold
$488,500
$418/sq ft
Jan 17, 2014
Listed
$525,000
$449/sq ft
+44
Updated & meticulously maintained since 2008. Open, bright & roomy living, dining & kitchen lead to screened, tiled patio w/ mega views of clean, clear, deep canal, 5 mins to ocean or gulf. Granite/stainless kitchen, soft close cabinets kitch & master bath, 18' tiled floor, French doors, plus lots of storage in garage. Perfect for your retirement or vacation home in paradise!
FLKMLS #544558
May 16, 2008
Sold
$500,000
$427/sq ft
Feb 20, 2008
Listed
$559,000
$478/sq ft
Public Records
Feb 1, 1973
Sold
$27,000
$23/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$6,850 (−1.0%)
$486,750 + $228,704
$715,454
2024
$6,920 (+0.2%)
$478,500 + $227,528
$706,028
2023
$6,910 (+8.8%)
$474,375 + $232,000
$706,375
2022
$6,351 (+25.2%)
$379,500 + $232,453
$611,953
2021
$5,071 (+5.7%)
$260,906 + $198,655
$459,561
2020
$4,795 (+1.0%)
$247,500 + $200,649
$448,149
2019
$4,749 (+14.2%)
$247,500 + $200,649
$448,149
2018
$4,160 (−9.9%)
$247,500 + $151,277
$398,777
2017
$4,620 (+10.7%)
$247,500 + $212,825
$460,325
2015
$4,174 (+39.3%)
$247,500 + $199,501
$447,001
2014
$2,997
Tax history for 231 9th St
Year
Property tax
Land + Additions
Assessment*
2025
$6,850 (−1.0%)
$486,750 + $228,704
$715,454
2024
$6,920 (+0.2%)
$478,500 + $227,528
$706,028
2023
$6,910 (+8.8%)
$474,375 + $232,000
$706,375
2022
$6,351 (+25.2%)
$379,500 + $232,453
$611,953
2021
$5,071 (+5.7%)
$260,906 + $198,655
$459,561
2020
$4,795 (+1.0%)
$247,500 + $200,649
$448,149
2019
$4,749 (+14.2%)
$247,500 + $200,649
$448,149
2018
$4,160 (−9.9%)
$247,500 + $151,277
$398,777
2017
$4,620 (+10.7%)
$247,500 + $212,825
$460,325
2015
$4,174 (+39.3%)
$247,500 + $199,501
$447,001
2014
$2,997
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
Beds
2
Baths
2
Stories
1
Lot width
—
Lot depth
—
Lot size
4,125 Sq. Ft.
Year renovated
2006
Sq. Ft.
1,170
Year built
1971
Style
Single Family Residential
County
Monroe County
APN
0566 33 00075510000100
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Apr 21, 2026.
Property details
Parking
Parking / Garage Information
Vehicle Storage: Attached, Off Street Parking, Open Parking, Garage, Auto Door Opener
Vehicle Storage: Car(s): 4+
Interior
Virtual Tour
Interior Features
Interior Features: Smoke Alarms, Storage
Flooring: Tile Floor
Windows/Doors: French Doors, Single Hung Windows, Glass Doors
Marathon Neighborhood: Marathon East - Gulf (Airport to Vaca)
Financial
Tax Information
Taxes: $4,794.98
Tax Year: 2,020
Tax Exemptions: None
Utilities
Utility Information
Utilities: Elect Separate Meter, Water Separate Meter, Municipal Sewer, FKAA
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: Turn on Sadowski Causeway from US1. Turn right on W Ocean Dr. Turn right on 9th St. Property is the right half of duplex, 6th building on the left.
Neighborhood Features
Beach, Tennis Courts
Public facts
Beds: 2
Baths: 2.0
Sq. Ft.: 1,170
Stories: 1.0
Lot Size: 4,125 square feet
Style: Single Family Residential
Year Built: 1971
Year Renovated: 2006
County: Monroe County
APN: 0566 33 00075510000100
Home facts updated by county records on Apr 21, 2026
Other
Auction Information
Financial Status: Auction: No
Around this home
Schools
K - 12
Preschool & daycare
Stanley Switlik Elementary School
Public PreK-5 • Assigned • 4.6mi
4/10
Marathon School
Public 6-12 • Assigned • 3.7mi
4/10
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 Beach, FL • 33051
Average low and high temperatures (°F)
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Jan
Feb
Mar
Apr
May
Jun
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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
$839,000 – $1.02M
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