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  • 1911 Seidenberg Avenue, Key West, FL 33040 (MLS# 619758)

1911 Seidenberg Avenue, Key West, FL 33040

$1,250,000
Property Type: Residential Bedrooms: 2 Baths: 2 Square Footage: 1,119 Lot Size (sq. ft.): 5,000 Status: Active
Current Price: $1,250,000 List Date: 5/04/2026 Last Modified: 5/04/2026

Description

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.

More Information MLS# 619758

Contract Information

Listing Board: Key West Association As is Rght to Inspct: Yes Potential Short Sale: No Bank Owned: No Species List: No Current Price: $1,250,000 Listing Date: 2026-04-30 List Price: $1,250,000

Location, Tax & Legal

KW Neighborhood: Midtown East City: KEY WEST Mile Marker: 3 Marathon Neighborhood: N/A Side: Median Flood Zone: AE Alternate Key #: 1047899 Handicap Access: No Parcel #: 00047280000000 Zoning: SF - Single Family Deed Restrictions: No Legal: Kw Kw Realty Co's First Sub Pb1-43 Lot 4 Sqr 19 Tr 21 Or300-449/50 Or402-1080-1081 Or2928-1201 Taxes: 7059.17 Tax Year: 2025 Pub Sewer HkUp: Yes Street #: 1911 Street Name: Seidenberg Street Suffix: Avenue Key/Island: Key West State/Province: FL Zip Code: 33040 County: Monroe Subdivision: Key West Realty Cos Sub (3.0) Area: 03 - Key West

General Property Description

Realtor.COM Type: Multi-family Waterfront: No Control Depth: 100 Lot Size: 50 X 100 Lot SqFt: 5000 Pool: No Lot Sqft Source: Tax Records Acres: 0.12 SqFt Source: Tax Records Rentals Allowed: Yes Style: Multi-Units Year Built: 1943 Living Apx SqFt: 1119 Total Bedrooms: 2 Full Baths: 2 Total Baths: 2

Remarks & Misc

Remarks – Consumer: 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.

Association Info

Mandatory Home Owners Asc: No 1st Right of Refusal: No Association Fee $: 0

Fee Includes

None: 1

Dockage

None: 1

Tax Exemptions

Homestead: 1

Appliances

Dryer: 1 Oven: 1 Range: 1 Refrigerator: 1 Washer: 1

Pets

Pets Allowed: 1

Cooling

Ceiling Fans(s): 1 Wall/Window Unit(s): 1

Heating

None: 1

Waterfront

None: 1

Waterview

No Waterview: 1

Floor

Concrete: 1 Vinyl: 1 Wood: 1

Interior Features

Built-in Cabinets: 1 Smoke Alarms: 1

Property Condition

Updated/Remodeled: 1

Building Style

Above Flood: No Other Bldg Style: 1

Windows/Doors

French Doors: 1 Impact Rstnce Window: 1 Jalousie Windows: 1 Sash/Screen Window: 1

Vehicle Storage

Car(s): 2 Off Street Parking: 1

Construction

Frame: 1

Land Size

Less Than 1/4 Acre: 1

Furnished

Negotiable: 1

Utilities

Cable Available: 1 Elect Separate Meter: 1 FKAA: 1

Porch/Balcony

Deck: 1 Open Porch/Balcony: 1 Patio: 1 Screened Patio: 1

Exterior Features

Fencing: 1 Fruit Tree(s): 1 Privacy Wall/Fence: 1 Rain Gutters: 1 Shed: 1

Pre-Wired

Cable: 1

Roof

Metal Roof: 1

Financial Status

Bank Owned: No Potential Short Sale: No

Shutters

Panel: 1

Status Change Info

Status: Active

Property Features

Fee Includes: None Tax Exemptions: Homestead Waterfront: None Waterview: No Waterview Dockage: None Property Condition: Updated/Remodeled Building Style: Other Bldg Style Vehicle Storage: Off Street Parking Furnished: Negotiable Cooling: Ceiling Fans(s); Wall/Window Unit(s) Heating: None Utilities: Cable Available; Elect Separate Meter; FKAA Interior Features: Built-in Cabinets; Smoke Alarms Pre-Wired: Cable Appliances: Dryer; Oven; Range; Refrigerator; Washer Exterior Features: Fencing; Fruit Tree(s); Privacy Wall/Fence; Rain Gutters; Shed Construction: Frame Shutters: Panel Floor: Concrete; Vinyl; Wood Roof: Metal Roof Pets: Pets Allowed Land Size: Less Than 1/4 Acre
Listing Office: Ocean Sotheby's International Realty
Last Updated: May - 04 - 2026
The data relating to real estate for sale on this web site comes in part from the Florida Keys MLS, Inc. Information provided is deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. The information being provided is for consumers’ personal, non-commeral use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. IDX data is deemed reliable but is not guaranteed accurate by the MLS.

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