Date
Details
Price
Change
Source
2/10/2026
Sold
$535,000
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
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$535,000
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Property Description
Discover this charming and affordable 2-bedroom, 2-bath half duplex with an open-concept living, dining, and kitchen area - perfect for relaxed island living. Featuring a freshly painted exterior, new A/C (2025), lovingly maintained and stilted. Plenty of outdoor living areas and covered parking, a one-car garage, plus space for a trailer or RV, all of your tropical toys. A spacious primary suite offers a walk-in closet, and a comfortable layout which is ideal for your family home, employee housing, or Keys weekend getaway. Located just steps from the Cabana Pool and Beach Club, you can easily walk or bike around the entire city to enjoy its many amenities, including restaurants, marina, post office, golf, pickleball, tennis, bocce ball, three playgrounds, basketball, and the beautiful Sunset Park. Conveniently located near several airports: 10 minutes to Marathon Airport, just over 1 hour to Key West International, 2 hours to Miami International, and 2.5 hours to Fort Lauderdale International. Enjoy the best of Keys living in this welcoming home; comfortable, convenient, and move-in ready! Located in the very heart of the Keys: Key Colony Beach!
Full Property Details
Full Property Details for 300 3rd St
General
- Sold For: $535,000
- Taxes: $4,577 (2025)
- Status: Closed
- Type: Duplex
- Source: 927
- MLS ID: 617359
- Added to Site: 182 day(s) ago
Interior
- Interior Features: Pantry, Smoke Alarms, Window Treatments
- Appliances: Dishwasher, Dryer, Microwave, Range, Refrigerator, Washer
- Flooring: Tile
Rooms
Bathrooms
- Total Bathrooms: 2
- Full Bathrooms: 2
Bedrooms
- Total Bedrooms: 2
Additional Information
- Shared Amenities: Community Boat Ramp, Bike Paths, Beach, Tennis Court(s), Airport/Runway
- Security/Safety: Patrolled Area
Parking
- Garage: Yes
- Attached garage: Yes
- Parking Features: Guest, Off Street, Covered, Carport, Attached
Location
- Area: 17 - Vaca Cut - Both Sides Holiday Inn/Key Colony
- County: Monroe
- Subdivision: Key Colony Bch 1st Addn Amd Plat (53.5)
- Driving Directions: Overseas Hwy Mile Marker 53.5 turn at light onto Sadowski/KCB Causeway. Bear left onto E. Ocean Dr - Turn Left onto 3rd St - Follow to #300 3rd on right
Community
- Assoc. Fees Include: None, Water
- Pets Allowed: Yes
Heating & Cooling
- Central air: Yes
- Air Conditioning: Yes
- Cooling Type: Central Air, Ceiling Fans(s)
Structural Information
- Architectural Style: Above Flood
- Construction Status: Updated/Remodeled
- Construction: CBS
- Roof: Shingle
- Windows/Doors: Other Windows/Doors, Shutters
- Square Feet: 1,031
- Sq. Ft. Source: Property Data Card
- Year Built: 1982
- Property Condition: Updated/Remodeled
Lot Features
- Property View: No Waterview
- Lot Size (Acres): 0.08
- Lot Size (Sq. Ft.): 3,300
- Lot Size Source: Property Data Card
- Lot Dimensions: 30 x 110
- Zoning: R-2A - Key Colony Two Family
Water Features
- Water View: Yes
Financial Considerations
- Tax Amount: $4,577.26
- Tax Year: 2025
Disclosures and Reports
- Legal Description: KEY COLONY BEACH PB3-120 SHELTER KEY S1/2 LOT 31 BLK 2
- Flood Zone: AE
- APN: 00072590-000100
Listed by Ocean Sotheby's International, Karen D Raspe (305) 393-9010 and Ocean Sotheby's International, Ally Kelley (727) 459-0493
Sold by Coldwell Banker Schmitt RE Co., Caroline Donna Wagner-Earles
Listing agents
— 300 3rd St —
Karen D Raspe
Ocean Sotheby's International
Ally Kelley
Ocean Sotheby's International
NMLS#: 1598647Get Pre-Approved Today
Schools
Schools serving 300 3rd St
School District:Monroe County School District, Middle Torch Key, FL
| Name | Grades | Distance |
|---|---|---|
Stanley Switlik Elementary School 3400 Overseas Highway, Marathon, FL 33050 | PK-5 | 5.1 mi |
Marathon School 350 Sombrero Beach Road, Marathon, FL 33050 | 6-12 | 4.2 mi |
Disclaimer:
School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 300 3rd St
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- Duplex
- Active
- Updated 4 days ago
- 2Beds
- 1Total Bath
- 784Sq. Ft.
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- Single Family
- Active
- Updated 3 days ago
- 4Beds
- 5Total Baths
- 2,040Sq. Ft.
- Single Family
- Active
- Updated 4 days ago
- 5Beds
- 5Total Baths
- 3,013Sq. Ft.
- Single Family
- Active
- Updated 4 days ago
- 5Beds
- 5Total Baths
- 3,013Sq. Ft.
- Single Family
- Active
- Updated 3 days ago
- 4Beds
- 4Total Baths
- 2,429Sq. Ft.
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- Condo
- Active
- Updated 3 days ago
- 2Beds
- 2Total Baths
- 962Sq. Ft.
- Single Family
- Active
- Updated 3 days ago
- 5Beds
- 5Total Baths
- 2,920Sq. Ft.
Listed by Re/Max Alliance Group
- Single Family
- Active
- Updated 2 days ago
- 5Beds
- 3Total Baths
- 1,904Sq. Ft.
- Single Family
- Active
- Updated 3 days ago
- 3Beds
- 4Total Baths
- 2,540Sq. Ft.
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- Condo
- Closed
- Updated 3 days ago
- 2Beds
- 2Total Baths
- 1,045Sq. Ft.
- Condo
- Closed
- Updated 3 days ago
- 2Beds
- 2Total Baths
- 994Sq. Ft.
- Condo
- Closed
- Updated 4 days ago
- 1Bed
- 1Total Bath
- 675Sq. Ft.
- Condo
- Closed
- Updated 3 days ago
- 1Bed
- 1Total Bath
- 675Sq. Ft.
300 3rd Street, Key Colony Beach, FL 33051 (MLS# 617359) is a Duplex property that was sold at $535,000 on February 10, 2026. Want to learn more about 300 3rd Street? Do you have questions about finding other Duplex real estate for sale in Key Colony Beach? You can browse all Key Colony Beach real estate or contact a Coldwell Banker agent to request more information.