1911 Seidenberg Avenue

Key West, FL
$ 1,250,000 Beds 2 Baths 2 Sq 1,119
Monthly Estimate* How much can I afford?

With only two owners in its history, this well-maintained two-story property presents a rare investment opportunity in Key West. Configured as a legal duplex with two separately metered 1-bedroom, 1-bath units, it offers exceptional flexibility--ideal for investors seeking strong rental potential, business owners looking for employee housing, or owner-occupants wanting to offset costs by renting one unit while living in the other.Set on a 5,000 sq ft lot, the property is surrounded by lush, mature tropical landscaping with a wide variety of plants and palms, creating a private, shaded, treehouse-like setting filled with natural light. Two large screened porches and additional open-air spaces provide ideal indoor-outdoor living, while an outdoor shower enhances the island lifestyle.The home has been thoughtfully updated and well cared for, featuring Mitsubishi mini-split A/C systems in both units, a new hot water heater, new ceiling fans, impact windows upstairs, new gutters, updated appliances, and soft-close cabinetry. Interior finishes include a mix of pine, vinyl, and concrete flooring, along with stainless, Formica, and butcher block countertops. Both units offer full bathrooms with tubs.Additional highlights include two off-street parking spaces, low-maintenance grounds, and multiple windows throughout for abundant natural light and airflow. Located in desirable Midtown East, just minutes from everything Key West has to offer, this is a versatile, income-producing property with strong upside potential.

Single Family

  • Price
  • $ 1,250,000
  • City
  • Key West
  • Bedrooms
  • 2
  • Full Bathrooms
  • 2
  • County
  • MONROE
  • Half Bathrooms
  • 0
  • Area
  • Key West
  • Lot Size
  • 0.11 Acres
  • Zip
  • 33040
  • Sqr Footage
  • 1,119
  • Year Built
  • 1943
  • Taxes
  • $ 7059
  • Style
  • Bldg Style
  • MLS#
  • 620075
Listed By: Ocean Sotheby's International Realty
Data Source: Florida Keys MLS (FLKMLS)

Features

General

Living Area 1119.00
Construction Frame
Utilities FKAA,Cable Available,Elect Separate Meter
Roof Metal Roof
Appliances Washer,Oven,Range,Refrigerator,Dryer
Flood Zone AE
Zoning SF - Single Family
HOA Fee 0.00
Pets Allowed Y/N Pets Allowed
Status Active
Full Baths 2
Year Built 1943
Handicap Access No
Subdivision Key West Realty Cos Sub (3.0)
Style Multi-Units
View No Waterview
Property Type A
Fee Includes None
Acres 0.11
Lot Sqft 5000.00
Bank Owned No
Rental Allowed Yes
Building Style: Above Flood No
Control Depth 100
Dockage None
KW Neighborhood Midtown East

Interior Features

Interior Amenities Built-in Cabinets,Smoke Alarms
Furnished Y/N Negotiable
Flooring Vinyl,Concrete,Wood
Pre-Wired Cable

Exterior Features

Exterior Amenities Fencing,Shed,Privacy Wall/Fence,Rain Gutters,Fruit Tree(s)
Pool No
Waterfront None
Building Style Other Bldg Style
Lot Size 50 X 100
Land Size Less Than 1/4 Acre
Porch/Balcony Open Porch/Balcony,Deck,Screened Patio,Patio
Public Sewer Hookup Yes
Shutters Panel
Side Median
Species List No
Vehicle Storage Off Street Parking
Vehicle Storage: Car(s) 2
Windows/Doors Sash/Screen Window,Impact Rstnce Window,French Doors,Jalousie Windows

Amenities

  • Foreclosure
  • Views
  • Short Sale
  • New Construction
  • Adult 55+
  • Lease To Own
  • No HOA Fees
  • Furnished
  • Primary On Main
  • Air Conditioning
  • Seller Finance
  • Green
  • Fixer Upper
  • Horse
  • Golf
  • Fireplace
  • Deck
  • Garage
  • Basement
  • Pool

Affordability Calculator

$3,786

Per Month

Based on the average sale price from the Doral, FL office

  • Monthly Principal & interest $2,658
  • Monthly Property Taxes $1,062
  • Monthly Home Insurance $67
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Default based on a 30-year fixed rate of 6.49% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA, or jumbo loans.

Mortgage calculator provided courtesy of Inside Real Estate.

Schools

Elementary School Unknown Elementary School
Middle School Unknown Middle School
High School Unknown High School

Price History

5/29/2026 Listed $1,250,000

Property vs Zip Code Average in 33040

Price
AVG $2.05M
$1.25M
Taxes
AVG $9,908
$7,059
Year Built
AVG 1970
1943
Visits
AVG 163
126
Data Provided by Inside Real Estate®

In The Neighborhood

Areas That We Cover

1911 Seidenberg Avenue Key West, FL is a Single Family Home for sale at $1250000 with 1119 sqft and a lot size of 0.11 Acres Acre(s). 1911 Seidenberg Avenue Key West has 2 bedrooms, 2 baths and was built in 1943. The property's zip code is 33040 which is in Key West, FL

*Information deemed reliable but not guaranteed.

Financial calculator disclaimer: Default based on a 30-year fixed rate of 6.49% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.

Mortgage calculator provided courtesy of Inside Real Estate.

All information deemed reliable, but not guaranteed, and should be independently verified. The real estate information and related content displayed on this site is provided for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

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