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1911 Seidenberg Avenue, 
Key West, FL 33040

$1,250,000


2

Beds


2

Baths


1,119

Sq Ft


Multi-Family

Active

Listed by

Everett H Smith

Ocean Sotheby'S International Realty

Last updated:

May 9, 2026, 02:50 PM

MLS#

619758

Source:

FL FKBOR

About This Home

1911 Seidenberg Avenue

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.

Home Facts

Multi-Family

2 Baths

2 Bedrooms

Built in 1943

Price Summary

1,250,000

$1,117 per Sq. Ft.

MLS #:

619758

Last Updated:

May 9, 2026, 02:50 PM

Added:

18 day(s) ago


Rooms & Interior

Bedrooms

Total Bedrooms:

2

Bathrooms

Total Bathrooms:

2


Structure

Structure

Building Area:

1,119 Sq. Ft.

Year Built:

1943


Lot

Lot Size (Sq. Ft):

5,000


Finances & Disclosures

Finances

Price:

$1,250,000

Price per Sq. Ft:

$1,117 per Sq. Ft.

Source:FL FKBOR
The information being provided by Florida Keys Board Of REALTORS®, Inc. is for the consumer’s personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The information is deemed reliable but not guaranteed and should therefore be independently verified. © 2026 Florida Keys Board Of REALTORS®, Inc. All rights reserved.

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Contact an Agent

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Contact, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby's International Realty®). I acknowledge that I have read and agree to the terms of use and privacy notice.