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Half-Duplex with Boat Slip
For Sale
$999,000

441 3Rd Street, Key Colony Beach, FL 33051

Residential, Key Colony, FL

Property Size1,264 SF
Lot Size0.08 Acres
Price / SF$790.35
Days on Market192

Property Features for 441 3Rd Street

General Information

Property type Residential
Property subtype Duplex
Zoning R-1A - Key Colony Single
Bedrooms 3
Bathrooms 2
Full bathrooms 2
Rooms Bathroom 1, Bedroom 3, Bedroom 1, Bathroom 2, Bedroom 2
Window features Aluminum Frames
Patio and Porch features Patio
Interior features Granite Counter Top, Walk-in Closet(s)
Exterior features Fencing
Fencing Fenced
Appliances Washer, Dryer, Dishwasher, Refrigerator, Range, Oven, Microwave, Disposal, Freezer
Subdivision Key Colony Bch 1st Addn Amd Plat (53.5)
Standard status Active
APN 00072840-000100
Size 1,264 SF
Lot size 0.08 Acres

Taxes and HOA fees

Tax Year 2025
Tax Description BK 3 S 1/2 LOT 18 (UNIT B) KEY COLONY BEACH PB3-120 SHELTER KEY OR956-1556 OR1247-90/91 OR1439-62/63 OR1528-2322 OR1930-
Tax Annual Amount 7298
Legal Description BK 3 S 1/2 LOT 18 (UNIT B) KEY COLONY BEACH PB3-120 SHELTER KEY OR956-1556 OR1247-90/91 OR1439-62/63 OR1528-2322 OR1930-

Utilities

Utilities Cable Available
Heating system Central
Cooling system Central Air
Water front 1

Amenities

screened porch
dock
fish cleaning station
bait freezer
BBQ
picnic table
Smart TVs
Wi-Fi
cable
jetted tub
walk-in closet

Building Details

Year built 1998
Flooring type Tile
Building materials Concrete, Stucco
Roof type Metal
Architectural style Other
Listing Agency: Key Colony Beach Realty
Listed By: Karen Liskey · License #675050
Added: Feb 23 Changed: Aug 28 Last Checked: Sep 3 at 12:06AM
MLS# 618916

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.

Built in 1998, this 1,264-square-foot half-duplex offers three bedrooms and two bathrooms on a 0.08-acre lot. Interior features include granite countertops, a walk-in closet, tile flooring, central heating and air conditioning, and a full appliance package with washer and dryer. The home also includes a screened porch, fenced exterior, metal roof, cable availability, and a 30-foot boat slip with access toward the ocean.

The property is located in Key Colony, near parks, restaurants, golf, and the Cabana Club. Key Colony Beach provides access to both the Atlantic and Gulf, with nearby fishing, diving, and coral reef areas. Marathon airport is nearby, while Key West is approximately 50 miles away and Miami-Dade is roughly 90 minutes away.

Key Highlights

  • 3‑bedroom, 2‑bath half‑duplex with 1,264 square feet of living area
  • 30‑foot boat slip with quick ocean access
  • 0.08‑acre lot in Key Colony, FL 33051

Property Analytics

Current Use

Duplexes

Lease Details

1
Residential units

Location Intelligence

Trade Area within ½ mile

278
Businesses Nearby

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

Market

Vacancy Rate% for Multifamily in South region

8.5% 2022
10.2% 2023
11.4% 2024
11.3% 2025
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Frequently Asked Questions

What type of property is this?
Duplex - Three-bedroom residence with screened outdoor space, central air, and access to a private 30-foot boat slip.
Where is this duplex located?
The property is located at 441 3Rd Street Key Colony Beach, FL.
What is the asking price?
The asking price for this property is $999,000.
What are key features of this property?
This property features: 3‑bedroom, 2‑bath half‑duplex with 1,264 square feet of living area; 30‑foot boat slip with quick ocean access; 0.08‑acre lot in Key Colony, FL 33051
More about this property
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