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Key West Legal Duplex

1911 Seidenberg Avenue, Key West, FL 33040

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For Sale

$1,250,000

MULTI_FAMILY - Other - Key West, FL

Property size:

1,119 SF

Lot size:

0.12 Acres

Price / SF:

$1,117/SF

HighLights

Legal duplex with two separately metered 1‑bed, 1‑bath units
5,000 SF lot with mature tropical landscaping and a private fenced setting
Mitsubishi mini‑split A/C systems in both units plus impact windows upstairs
Updates include new hot water heater, new gutters, updated appliances, and soft‑close cabinetry
Two large screened porches plus deck and patio for indoor‑outdoor living
Metal roof with off‑street parking and an outdoor shower

We can help!

Contact an agent

Everett H Smith

For Sale

$1,250,000

MULTI_FAMILY - Other - Key West, FL

Property size:

1,119 SF

Lot size:

0.12 Acres

Price / SF:

$1,117/SF

Added:: Apr 30, 2026
Days on Market:: 59
Last Refresh:: Jun 27 at 3:06 pm

Property Features for 1911 Seidenberg Avenue

General Information

Property type: Residential Multi Family
Property subtype: Other
Zoning: SF - Single Family
Bedrooms: 2
Bathrooms: 2
Rooms: Bathroom 2, Bedroom 1, Bedroom 2, Bathroom 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: Privacy, Fenced
Appliances: Washer, Dryer, Refrigerator, Range, Oven
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

Utilities

Utilities: Cable Available
Cooling system: Wall/Window Unit(s), Window Unit(s)

Building Details

Year built: 1943
Flooring type: Concrete, Wood, Vinyl
Building materials: Frame
Roof type: Metal
Architectural style: Other

We can help!

Contact an agent

Everett H Smith

Listing agent Everett H Smith License #670558

Listing office Ocean Sotheby's International Realty 1075 Duval Street, 15C, Key West, FL

Listing date Apr 30, 2026

MLS# 619758 Listing URL

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.

HighLights

Legal duplex with two separately metered 1‑bed, 1‑bath units
5,000 SF lot with mature tropical landscaping and a private fenced setting
Mitsubishi mini‑split A/C systems in both units plus impact windows upstairs
Updates include new hot water heater, new gutters, updated appliances, and soft‑close cabinetry
Two large screened porches plus deck and patio for indoor‑outdoor living
Metal roof with off‑street parking and an outdoor shower

Overview

This well-maintained two-story property, configured as a legal duplex, offers an investment opportunity in Key West. The property features two separately metered 1-bedroom, 1-bath units. Set on a 0.12-acre lot, the property is surrounded by mature tropical landscaping, creating a private, shaded setting. Two large screened porches and additional open-air spaces provide indoor-outdoor living, complemented by an outdoor shower. The 1,119 square foot home has been updated and features 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 and low-maintenance grounds. Located in Midtown East, the property is positioned minutes from Key West attractions. The property is ideal for investors seeking rental potential, business owners looking for employee housing, or owner-occupants wanting to offset costs by renting one unit while living in the other.

Property Profile Location Intelligence

Current Use by Public Records

Duplexes

Suggested Use

Location Insight

Map
Local Demand

City: Key West
County: Monroe
State: Florida
Longitude: -81.780593
Latitude: 24.556705

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For sale
Duplexes
FL
Key West
33040
1911 Seidenberg Avenue

What type of property is this?

Duplex - Well-maintained two-story duplex in Key West's Midtown East.

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‑bed, 1‑bath units; 5,000 SF lot with mature tropical landscaping and a private fenced setting; Mitsubishi mini‑split A/C systems in both units plus impact windows upstairs

1911 Seidenberg Avenue, Key West, FL 33040

MULTI_FAMILY - Other - Key West, FL

Property Features for 1911 Seidenberg Avenue

General Information

Taxes and HOA fees

Utilities

Building Details

We can help!

HighLights

Overview

Current Use by Public Records

Suggested Use

Location Insight

Nearby Similar for Sale

Single-Story Office Corner Building

New Mixed-Use Development in Key West

Turnkey Retail Condominium Suite

Key West Multi-Unit Investment

Prime Corner Commercial Property, Key West

Key West Multi-Unit Investment

Adjoining Office Condominiums with Patio

Value-Add Fourplex Investment Opportunity

Waterfront Duplex with Bonus Suite

Renovated Duplex with Private Yard

Legal Duplex on Spacious Lot

Key West Duplex with Pool

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