580 & 590 10th St, Key Colony Beach, FL 33051
What's special
Exceptional canal-front opportunity with proven income potential. This expansive 7-bedroom, 7-bath residence offers outstanding flexibility as a legal duplex with an interior lockout, allowing it to function seamlessly as a large single-family home or as two separate living spaces. The configuration includes a generous 5BR/4BA main residence paired with a private 2BR/2BA guest wing, topped off by a convenient pool bath located in the game room, making it ideal for multigenerational living, guests, or vacation rental use. The main living space welcomes you with a dramatic two-story entry, an open-concept great room, multiple dining areas, wet bar, and a well-appointed kitchen that flows to a waterside balcony. The lower-level unit features its own open living and kitchen area, providing privacy and versatility. Four bedrooms are ensuite, complemented by 2 primary suites overlooking the water. Recent upgrades include complete concrete spalling repairs and a fresh exterior repaint, adding peace of mind and refreshed curb appeal. Mediterranean-inspired design elements are carried throughout, along with impact windows and doors, multiple balconies, and inviting indoor-outdoor living spaces. Outside, enjoy a heated pool, spa, covered poolside lanai, and 75 feet of concrete dockage with quick boating access to both the Atlantic Ocean and the Gulf of America. Additional features include a two-car garage and ample off-street parking. This property has a strong, established vacation rental history and is currently an active rental.
- 271 days |
- 308 |
- 17 |
Travel times
Living Room
Kitchen
Dining Room
Zillow last checked:
Listing updated:
Nate Bartlett,
Berkshire Hathaway HomeServices Keys Real Estate
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 7
- Bathrooms: 7
- Full bathrooms: 7
Cooling
- Central Air, Ceiling Fans(s)
Appliances
- Included: Washer, Dryer, Dishwasher, Refrigerator, Range, Oven, Microwave, Stainless Steel Appliance(s)
- Laundry: Laundry Room
Features
- Built-in Features, Granite Counters
- Flooring: Tile, Carpet
Interior area
- Total structure area: 4,478
- Total interior livable area: 4,478 sqft
Property
Parking
- Parking features: Garage
- Has garage: Yes
Features
- Patio & porch: Open Porch/Balcony, Patio, Lanai
- Exterior features: Lighting, Outdoor Shower, Storage
- Has private pool: Yes
- Pool features: In Ground
- Has spa: Yes
- Spa features: Heated
- Fencing: Fenced
- On waterfront: Yes
Lot
- Size: 8,250 Square Feet
Details
- Parcel number: 00075930000000
- Zoning: R-2A - Key Colony Two Family
Construction
Type & style
- Home type: MultiFamily
- Property subtype: Duplex
Materials
- CBS
Condition
- Year built: 1985
Utilities & green energy
- Utilities for property: Elect Separate Meter
Community & HOA
Community
- Features: Beach, Bike Paths
- Security: Security Guard
- Subdivision: Key Colony Bch 1st Addn Amd Plat (53.5)
HOA
- Has HOA: No
- Services included: None
Location
- Region: Key Colony Beach
Financial & listing details
- Price per square foot: $635/sqft
- Annual tax amount: $19,308
- Date on market: 12/22/2025
Price history
| Date | Event | Price |
|---|---|---|
| 6/29/2026 | Price change | $2,845,000-5%$635/sqft |
Source: | ||
| 5/13/2026 | Price change | $2,995,000-7.8%$669/sqft |
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| 4/8/2026 | Price change | $3,250,000-3%$726/sqft |
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| 3/28/2026 | Price change | $3,350,000-1.3%$748/sqft |
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| 2/8/2026 | Price change | $3,395,000-7%$758/sqft |
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| 12/22/2025 | Listed for sale | $3,650,000-8.3%$815/sqft |
Source: | ||
| 9/1/2024 | Listing removed | $3,980,000$889/sqft |
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| 3/20/2024 | Listed for sale | $3,980,000+328%$889/sqft |
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| 5/27/2014 | Sold | $930,000$208/sqft |
Source: | ||
Public tax history
Monthly payment
Estimated market value
$2,585,000
$2.46M - $2.71M
Not available
Climate risks
Explore flood, wildfire, and other predictive climate risk information for this property on First Street®️.