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.
For sale
$1,250,000
1911 Seidenberg Ave, Key West, FL 33040
2beds
1,119sqft
Multi Family
Built in 1943
-- sqft lot
$1,165,000 Zestimate®
$1,117/sqft
$-- HOA
What's special
Updated appliancesTwo off-street parking spacesTwo large screened porchesLow-maintenance groundsNew hot water heaterImpact windows upstairsNew ceiling fans
- 121 days
- 116
- 6
Zillow last checked:
Listing updated:
Listed by:
Everett H Smith 305-304-2651,
Ocean Sotheby's International Realty
Source: FLKMLS,MLS#: 619758
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 2
- Bathrooms: 2
- Full bathrooms: 2
Cooling
- Wall/Window Unit(s), Ceiling Fans(s)
Appliances
- Included: Washer, Dryer, Refrigerator, Range, Oven
Features
- Built-in Features
- Flooring: Vinyl, Wood, Concrete
Interior area
- Total structure area: 1,119
- Total interior livable area: 1,119 sqft
Property
Features
- Patio & porch: Open Porch/Balcony, Deck, Patio, Screened Patio
- Exterior features: Fruit Tree(s), Rain Gutters
- Fencing: Fenced,Privacy
Lot
- Size: 5,227 Square Feet
- Dimensions: 50 X 100
Details
- Additional structures: Shed(s)
- Parcel number: 00047280000000
- Zoning: SF - Single Family
Construction
Type & style
- Home type: MultiFamily
- Architectural style: Other
- Property subtype: Multi Family
Materials
- Frame
Condition
- Updated/Remodeled
- New construction: No
- Year built: 1943
Utilities & green energy
- Utilities for property: Elect Separate Meter, Cable Available
Community & HOA
Community
- Subdivision: Key West Realty Cos Sub (3.0)
HOA
- Has HOA: No
- Services included: None
Location
- Region: Key West
Financial & listing details
- Price per square foot: $1,117/sqft
- Tax assessed value: $733,923
- Annual tax amount: $7,059
- Date on market: 5/4/2026
Estimated market value
$1,165,000
$1.11M - $1.22M
$3,409/mo
Price history
| Date | Event | Price |
|---|---|---|
| 5/4/2026 | Listed for sale | $1,250,000+147.5%$1,117/sqft |
Source: | ||
| 9/24/2018 | Sold | $505,000$451/sqft |
Source: | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $7,059 +9.1% | $713,813 +10% |
| 2024 | $6,471 +5.8% | $648,921 +10% |
| 2023 | $6,116 +10.2% | $589,928 +10% |
| 2022 | $5,550 +8.3% | $536,298 +10% |
| 2021 | $5,125 +2.6% | $487,544 +4.6% |
| 2020 | $4,996 | $466,324 +10% |
| 2019 | $4,996 +9.2% | $423,931 +2.5% |
| 2018 | $4,574 +6.5% | $413,608 +4.4% |
| 2017 | $4,293 +4.7% | $396,108 +0.6% |
| 2016 | $4,099 +0.4% | $393,632 +24.2% |
| 2015 | $4,084 | $317,015 |
Find assessor info on the county website
Monthly payment
Est. payment





