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391 10th Street, Key Colony, FL 33051

$1,310,000
Property Type: Residential Bedrooms: 3 Baths: 3 Square Footage: 2,166 Lot Size (sq. ft.): 4,125 Status: Active
Current Price: $1,310,000 List Date: 4/02/2026 Last Modified: 4/08/2026

Overview

Description

Discover exceptional waterfront living in the heart of Key Colony Beach. This concrete constructed half duplex offers over 2,100 square feet with three bedrooms, three bathrooms inside and 37.5 feet of dockage. A rare and highly desirable interior staircase welcomes you from the above flood first floor, seamlessly connecting both levels of the home. Downstairs is completely built above flood and features a one bedroom, one bathroom suite with additional living area, ideal for guests or extended family. Step through sliding glass doors to a spacious wood deck and 37.5 feet of dockage. Enjoy the ocean breeze and shade under the lush buttonwood tree. Upstairs, enjoy open concept living with a bright and airy kitchen, dining, and living area designed for effortless entertaining. The primary suite boasts a recently renovated bathroom with step-in tiled shower, quartz topped double vanity and tiled flooring. Nearby, a second guest bedroom offers its own ensuite for added comfort and privacy. ...

Listing Details MLS# 619329

Location, Tax & Legal

Street #
391
Street Name
10th
Street Suffix
Street
Key/Island
Key Colony
State/Province
FL
Zip Code
33051
County
Monroe
Subdivision
Key Colony Bch 1st Addn Amd Plat (53.5)
Area
17 - Vaca Cut - Both Sides Holiday Inn/Key Colony
City
KEY COLONY
Mile Marker
53.5
Marathon Neighborhood
Marathon East - Gulf (Airport to Vaca)
Side
Ocean
Flood Zone
AE
Alternate Key #
1081990
Parcel #
00076300000000
Zoning
R-2A - Key Colony Two Family
Deed Restrictions
Unknown
Legal
BK 11 NLY 1/2 LT 14 KEY COLONY BEACH FIRST ADDN AMENDED PLAT PB4-11 SHELTER KEY
Taxes
6525.23
Tax Year
2025
Pub Sewer HkUp
Yes

Contract Information

Listing Board
Marathon/Lower Keys
As is Rght to Inspct
Yes
Species List
No

General Property Description

Realtor.COM Type
Residential - Single Family
Style
Half Duplex
Waterfront
Yes
Control Depth
5
Pool
No
Year Built
1988
Lot SqFt
4125
Acres
0.09
Living Apx SqFt
2166
SqFt Source
Property Data Card
Total Bedrooms
3
Full Baths
3
Total Baths
3
Rentals Allowed
Yes
Min Rental Days
7

Association Info

Mandatory Home Owners Asc
No
1st Right of Refusal
No
Association Fee $
0

Dockage

Dock Length
37
Dock
Wood

More Information

Building Style

Above Flood
Yes
Stories
2 Stories

Remarks & Misc

Remarks – Consumer
Discover exceptional waterfront living in the heart of Key Colony Beach. This concrete constructed half duplex offers over 2,100 square feet with three bedrooms, three bathrooms inside and 37.5 feet of dockage. A rare and highly desirable interior staircase welcomes you from the above flood first floor, seamlessly connecting both levels of the home. Downstairs is completely built above flood and features a one bedroom, one bathroom suite with additional living area, ideal for guests or extended family. Step through sliding glass doors to a spacious wood deck and 37.5 feet of dockage. Enjoy the ocean breeze and shade under the lush buttonwood tree. Upstairs, enjoy open concept living with a bright and airy kitchen, dining, and living area designed for effortless entertaining. The primary suite boasts a recently renovated bathroom with step-in tiled shower, quartz topped double vanity and tiled flooring. Nearby, a second guest bedroom offers its own ensuite for added comfort and privacy. Recent updates include a newer AC, 2018 standing seam metal roof, and termite tenting with a transferable warranty, providing peace of mind for years to come. With its rare downstairs living, expansive square footage, and thoughtfully designed layout, this property presents a unique opportunity to own a well-cared-for waterfront residence in one of the most desirable areas of the Florida Keys. Key Colony Beach welcomes primary and seasonal guests with the 9-hole par 3 golf course, tennis and pickle ball courts, Sunset Park, City Hall, police department, multiple restaurants, boat ramp and marina. Enjoy the island lifestyle with amenities galore!
Directions
From US-1, turn onto Sadowski Causeway. Turn right onto West Ocean Drive. Right onto 10th Street. Property will be on left side with sign out front.

Fee Includes

None
Yes

Tax Exemptions

Homestead
Yes

Appliances

Dishwasher
Yes
Disposal
Yes
Dryer
Yes
Microwave
Yes
Oven
Yes
Refrigerator
Yes
Stainless Steel Appliance(s)
Yes
Washer
Yes

Pets

Pets Allowed
Yes

Cooling

Ceiling Fans(s)
Yes
Central Air
Yes

Waterfront

Canal Front
Yes

Waterview

Canal View
Yes

Floor

Laminate
Yes
Tile
Yes

Neighborhood Feature

Bike Paths
Yes
Community Boat Ramp
Yes
Tennis Courts
Yes

Interior Features

Entrance Foyer
Yes
Quartz Countertops
Yes
Storage
Yes

Windows/Doors

Awning Windows
Yes
Sliding Glass Doors
Yes

Vehicle Storage

Guest Parking
Yes
Open Parking
Yes
Off Street Parking
Yes

Security

Patrolled Area
Yes

Construction

CBS
Yes

Land Size

Less Than 1/4 Acre
Yes

Furnished

Partially
Yes

Terms

No Seller Finance
Yes

Utilities

Buyer to Verify
Yes
Cable Available
Yes
Community Swr Plant
Yes
FKAA
Yes
Municipal Sewer
Yes

Porch/Balcony

Deck
Yes
Open Porch/Balcony
Yes

Exterior Features

Fencing
Yes

Roof

Metal Roof
Yes

Shutters

Accordion
Yes

Property Features

Fee Includes: None Tax Exemptions: Homestead Waterfront: Canal Front Waterview: Canal View Vehicle Storage: Guest Parking; Off Street Parking; Open Parking Furnished: Partially Cooling: Ceiling Fans(s); Central Air Utilities: Buyer to Verify; Cable Available; Community Swr Plant; FKAA; Municipal Sewer Interior Features: Entrance Foyer; Quartz Countertops; Storage Appliances: Dishwasher; Disposal; Dryer; Microwave; Oven; Refrigerator; Stainless Steel Appliance(s); Washer Exterior Features: Fencing Construction: CBS Shutters: Accordion Floor: Laminate; Tile Roof: Metal Roof Pets: Pets Allowed Neighborhood Feature: Bike Paths; Community Boat Ramp; Tennis Courts Security: Patrolled Area Land Size: Less Than 1/4 Acre Terms: No Seller Finance
Listing Office: Ocean Sotheby's International Relaty
Last Updated: April - 08 - 2026
The data relating to real estate for sale on this web site comes in part from the Florida Keys MLS, Inc. Information provided is deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. The information being provided is for consumers’ personal, non-commeral use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. IDX data is deemed reliable but is not guaranteed accurate by the MLS.