Canal-Front Duplex with
For Sale
$2,845,000
580 & 590 10th Street, Key Colony Beach, FL 33051
Residential, Key Colony, FL
Property Size4,478 SF
Lot Size0.19 Acres
Price / SF$635.33
Days on Market274
Property Features for 580 & 590 10th Street
General Information
Property type
Residential Multi Family
Property subtype
Duplex
Zoning
R-2A - Key Colony Two Fam
Bedrooms
7
Bathrooms
7
Full bathrooms
7
Rooms
Bedroom 3, Bathroom 3, Bedroom 4, Bathroom 2, Bedroom 5, Bedroom 6, Bedroom 2, Bathroom 1, Bathroom 4, Bathroom 5, Bathroom 7, Bedroom 1, Bedroom 7, Bathroom 6
Patio and Porch features
Patio, Porch
Pets allowed
Yes
Pool private
1
Interior features
Built-in Cabinets, Granite Counter Top
Exterior features
Fencing, Hot Tub, Lighting, Lanai, Outdoor Shower, Storage
Fencing
Fenced
Appliances
Washer, Dryer, Dishwasher, Refrigerator, Range, Oven, Microwave, Stainless Steel Appliance(s)
Subdivision
Key Colony Bch 1st Addn Amd Plat (53.5)
Directions
From HWY 1 travel down Sadowski Cswy, turn right on West Ocean, turn right on 10th St, house is on the right midway down 10th.
Standard status
Active
APN
00075930-000000
Size
4,478 SF
Lot size
0.19 Acres
Taxes and HOA fees
Tax Year
2025
Tax Description
BK10 LT 48 KEY COLONY BEACH FIRST ADDN AMENDED PLAT PB-4-11 SHELTER KEY OR341-309/10 OR566-245 OR722-402 OR1394-1921D/C
Tax Annual Amount
19308
Legal Description
BK10 LT 48 KEY COLONY BEACH FIRST ADDN AMENDED PLAT PB-4-11 SHELTER KEY OR341-309/10 OR566-245 OR722-402 OR1394-1921D/C
Utilities
Cooling system
Central Air
Water front
1
Amenities
pool
spa
covered lanai
dock
garage
balconies
impact windows and doors
game room
Building Details
Year built
1985
Flooring type
Tile, Carpet
Building materials
CBS
Roof type
Metal
Additional Structures
Storage
Listing Agency:
Berkshire Hathaway HomeServices Keys Real Estate
(305) 743-7636
Listed By:
Nate Bartlett · License #358818989
(305) 800-6283
Added: Dec 22, 2025
Changed: Sep 15
Last Checked: Sep 22 at 11:06AM
MLS# 617788
Copyright © 2026 Marathon and Lower Keys Association of Realtors. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
Investment Insights
Based on property information with market context.
This canal-front duplex property contains 4,478 square feet on a 0.1894-acre lot and was built in 1985. The seven-bedroom, seven-bath layout combines a 5BR/4BA primary residence with a separate 2BR/2BA wing, while an interior lockout supports independent occupancy or use as one larger home. The residence also includes a two-story entry, open living and kitchen areas, multiple dining spaces, a wet bar, two water-facing primary suites, four ensuite bedrooms, and a game-room pool bath.
Outdoor improvements include a heated pool, spa, covered lanai, several balconies, and 75 feet of concrete dockage. The property provides boating access toward both the Atlantic Ocean and the Gulf of America, along with a two-car garage and off-street parking. Impact windows and doors, metal roofing, central air, CBS construction, and recent concrete spalling repairs and exterior repainting are also included. Zoned R-2A - Key Colony Two Fam, the property is an active rental with an established vacation-rental history.
Outdoor improvements include a heated pool, spa, covered lanai, several balconies, and 75 feet of concrete dockage. The property provides boating access toward both the Atlantic Ocean and the Gulf of America, along with a two-car garage and off-street parking. Impact windows and doors, metal roofing, central air, CBS construction, and recent concrete spalling repairs and exterior repainting are also included. Zoned R-2A - Key Colony Two Fam, the property is an active rental with an established vacation-rental history.
Key Highlights
- 7‑bedroom, 7‑bath legal duplex with a 5BR/4BA residence and 2BR/2BA separate wing
- 4,478 square feet on a 0.1894‑acre canal‑front lot
- 75 feet of concrete dockage with boating access to the Atlantic Ocean and Gulf of America
Property Analytics
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Current Use
Lease Details
2
Residential units
Location Intelligence
Trade Area within ½ mile
463
Businesses Nearby
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Business Placement
Demographics for 33051, FL
790
Population
1,132
Households
0.7
Avg Household Size
63
Median Age
48%
College-Educated
95%
High-School Grad
0.4 sq mi
ZIP Area
1,975
Density / Sq Mi
$94,531
Median Household Income
$38,860
Median Earnings
$1,849
Median Rent
$834,800
Median Home Value
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Market
Vacancy Rate% for Multifamily in South region
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Frequently Asked Questions
What type of property is this?
Duplex - Legal duplex configuration offers separate living spaces with an interior lockout and established vacation-rental activity.
Where is this duplex located?
The property is located at 580 & 590 10th Street Key Colony Beach, FL.
What is the asking price?
The asking price for this property is $2,845,000.
What are key features of this property?
This property features: 7‑bedroom, 7‑bath legal duplex with a 5BR/4BA residence and 2BR/2BA separate wing; 4,478 square feet on a 0.1894‑acre canal‑front lot; 75 feet of concrete dockage with boating access to the Atlantic Ocean and Gulf of America
