Updated Two-Unit
For Sale
$1,250,000
1911 Seidenberg Avenue, Key West, FL 33040
Residential, Key West, FL
Property Size1,119 SF
Lot Size0.12 Acres
Price / SF$1,117
Days on Market158
Property Features for 1911 Seidenberg Avenue
General Information
Property type
Residential Multi Family
Property subtype
Other
Zoning
SF - Single Family
Bedrooms
2
Bathrooms
2
Full bathrooms
2
Rooms
Bathroom 2, Bathroom 1, Bedroom 2, Bedroom 1
Parking features
Off Street
Patio and Porch features
Porch, Deck, Patio
Interior features
Built-in Cabinets
Exterior features
Fencing, Fruit Tree(s), Rain Gutters, Privacy Wall/Fence, Shed
Fencing
Fenced, Privacy
Appliances
Washer, Dryer, Refrigerator, Range, Oven
Subdivision
Key West Realty Cos Sub (3.0)
View
Water
Standard status
Active
APN
00047280000000
Size
1,119 SF
Lot size
0.12 Acres
Taxes and HOA fees
Tax Year
2025
Tax Description
Kw Kw Realty Co's First Sub Pb1-43 Lot 4 Sqr 19 Tr 21 Or300-449/50 Or402-1080-1081 Or2928-1201
Tax Annual Amount
7059
Legal Description
Kw Kw Realty Co's First Sub Pb1-43 Lot 4 Sqr 19 Tr 21 Or300-449/50 Or402-1080-1081 Or2928-1201
Utilities
Utilities
Cable Available
Cooling system
Window Unit(s), Wall/Window Unit(s)
Amenities
screened porches
outdoor shower
mini-split A/C
impact windows
ceiling fans
updated appliances
Building Details
Year built
1943
Flooring type
Wood, Concrete, Vinyl
Building materials
Frame
Roof type
Metal
Architectural style
Other
Listing Agency:
Ocean Sotheby's International Realty
(305) 294-1117
Listed By:
Everett H Smith · License #670558
(305) 304-2651
Added: Apr 30
Changed: Oct 1
Last Checked: Oct 4 at 12:06AM
MLS# 619758
Copyright © 2026 Key West 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 1,119-square-foot duplex contains two separately metered one-bedroom, one-bath units within a two-story frame structure built in 1943. The property sits on a 0.12-acre, 5,000 sq ft lot and includes two screened porches, additional outdoor living areas, an outdoor shower, fencing, a shed, and mature tropical landscaping. Recent improvements include a new hot water heater, updated appliances, soft-close cabinetry, new gutters, and impact windows upstairs. Flooring includes vinyl, concrete, and wood, while both units feature full bathrooms with tubs and built-in cabinetry.
The property is located at 1911 Seidenberg Avenue in Key West’s Midtown East area. Two off-street parking spaces serve the duplex, and multiple windows provide natural light and airflow. Additional property features include a metal roof, cable availability, washer and dryer appliances, and privacy fencing.
The property is located at 1911 Seidenberg Avenue in Key West’s Midtown East area. Two off-street parking spaces serve the duplex, and multiple windows provide natural light and airflow. Additional property features include a metal roof, cable availability, washer and dryer appliances, and privacy fencing.
Key Highlights
- Legal duplex with two separately metered 1‑bedroom, 1‑bath units
- 1,119 square feet on a 0.12‑acre lot
- 5,000 sq ft lot with two off‑street parking spaces
Property Analytics
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Current Use
Lease Details
2
Residential units
Location Intelligence
Trade Area within ½ mile
1,411
Businesses Nearby
Explore this area
Business Placement
Demographics for 33040, FL
35,958
Population
19,001
Households
1.9
Avg Household Size
44
Median Age
38%
College-Educated
92%
High-School Grad
17.7 sq mi
ZIP Area
2,032
Density / Sq Mi
$79,038
Median Household Income
$42,458
Median Earnings
$2,079
Median Rent
$766,400
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 with separate metering, screened porches, off-street parking, and updated interiors in Key West.
Where is this duplex located?
The property is located at 1911 Seidenberg Avenue Key West, FL.
What is the asking price?
The asking price for this property is $1,250,000.
What are key features of this property?
This property features: Legal duplex with two separately metered 1‑bedroom, 1‑bath units; 1,119 square feet on a 0.12‑acre lot; 5,000 sq ft lot with two off‑street parking spaces
