CBS Duplex with Dock on Deep
For Sale
$675,000
427 89Th Street Ocean, Marathon, FL 33050
Residential, Marathon, FL
Property Size945 SF
Lot Size0.07 Acres
Price / SF$714.29
Days on Market265
Property Features for 427 89Th Street Ocean
General Information
Property type
Residential
Property subtype
Duplex
Zoning
RM - Residential Medium
Bedrooms
2
Bathrooms
2
Full bathrooms
2
Rooms
Bathroom 1, Bathroom 2, Bedroom 2, Bedroom 1
Patio and Porch features
Patio
Pets allowed
Yes
Interior features
Granite Counter Top, Storage
Exterior features
Fencing, Privacy Wall/Fence, Shed, Storage
Fencing
Fenced, Privacy
Appliances
Dishwasher, Refrigerator, Range, Oven, Microwave, Stainless Steel Appliance(s)
Subdivision
Gulfstream Shore (Marathon) (52.0)
Directions
US-1 to 89th st. ocean.
Standard status
Active
APN
00349370-000100
Size
945 SF
Lot size
0.07 Acres
Taxes and HOA fees
Tax Year
2024
Tax Description
AMD PLAT OF GULFSTREAM SHORES PLAT #2 PB3-142 S1/2 OF LOT 2 BLOCK 5 OR559-140 OR668-72 OR718-539 OR761-803 OR940-456 OR1
Tax Annual Amount
5063
Legal Description
AMD PLAT OF GULFSTREAM SHORES PLAT #2 PB3-142 S1/2 OF LOT 2 BLOCK 5 OR559-140 OR668-72 OR718-539 OR761-803 OR940-456 OR1
Utilities
Cooling system
Central Air
Water front
1
Amenities
dock
ample parking
low-maintenance backyard
Building Details
Year built
1975
Floors in Building
1
Flooring type
Tile
Building materials
CBS
Roof type
Metal
Additional Structures
Storage
Listing Agency:
Island Breeze Realty, LLC
(305) 289-8855
Listed By:
David N. Grego · License #3107004
(305) 481-1296
Added: Dec 11, 2025
Changed: Aug 28
Last Checked: Sep 2 at 11:06AM
MLS# 617668
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 CBS half-duplex duplex is built for coastal living, with an open interior layout, tile flooring, a granite kitchen, and storage features throughout. The home is served by central air and includes two bedrooms and two bathrooms. Exterior improvements include a patio, fencing/privacy wall, a shed, and additional storage. A 2018 metal roof supports low-maintenance ownership, and the dock provides access to a clean, deep canal with instant ocean access.
The property sits on a 0.07-acre lot in Marathon, Monroe County, in the RM - Residential Medium zoning category. The home’s front provides ample parking, and the layout is described as having minimal stairs.
Built in 1975, this duplex configuration offers a practical option for a second home or full-time residence in the Florida Keys.
The property sits on a 0.07-acre lot in Marathon, Monroe County, in the RM - Residential Medium zoning category. The home’s front provides ample parking, and the layout is described as having minimal stairs.
Built in 1975, this duplex configuration offers a practical option for a second home or full-time residence in the Florida Keys.
Key Highlights
- 35‑ft dock on a clean, deep canal with instant ocean access
- CBS half‑duplex with open layout and tile flooring
- Granite kitchen and interior storage
Property Analytics
Property Profile
Current Use
Lease Details
1
Residential units
Location Intelligence
Trade Area within ½ mile
284
Businesses Nearby
Explore this area
Business Placement
Demographics for 33050, FL
10,479
Population
7,314
Households
1.4
Avg Household Size
50
Median Age
34%
College-Educated
90%
High-School Grad
9.1 sq mi
ZIP Area
1,152
Density / Sq Mi
$83,243
Median Household Income
$40,006
Median Earnings
$1,611
Median Rent
$705,600
Median Home Value
Market
Vacancy Rate% for Multifamily in South region
Questions? Ask Rey
Realmo’s AI knows this listing — price, zoning, demand, history. Ask anything.
Frequently Asked Questions
What type of property is this?
Short term rental property - CBS half-duplex features a granite kitchen, central air, and a 2018 metal roof with a fenced, low-maintenance yard.
Where is this short term rental property located?
The property is located at 427 89Th Street Ocean Marathon, FL.
What is the asking price?
The asking price for this property is $675,000.
What are key features of this property?
This property features: 35‑ft dock on a clean, deep canal with instant ocean access; CBS half‑duplex with open layout and tile flooring; Granite kitchen and interior storage
