Search
Duplex with Unfinished Upper Floor
For Sale
$1,400,000

646 William Street, Key West, FL 33040

The first two floors provide four bedrooms and three bathrooms, with additional unfinished space above.

Property Size1,780 SF
Price / SF$786.52
Days on Market34

Property Features for 646 William Street

General Information

Standard status Active
Size 1,780 SF
Property subtype Duplex

Property Condition

Severity Repairs Needed
Evidence in need of renovation

Additional Details

Multifamily Units 2

Taxes and HOA fees

Annual Taxes $13,849

Building Details

Building Size 1,780 SF
Year Built 1928
Buildings 1
Listing Agency: Coldwell Banker Schmitt Real Estate Co. (KW)
Listed By: Louis M Paez · License #3029661
Source: Keystoprealty
Added: Sep 25 Changed: Oct 26 Last Checked: Oct 26 at 3:09PM

Displayed information is deemed reliable but is not guaranteed and should be independently verified. All listing content including descriptions, pricing, images are the copyrighted material of Coldwell Banker Schmitt Real Estate Co. (KW)

Rey
Ask AI about this property
Review the available facts, identify missing information and prepare questions for the agent.

Investment Insights

Based on property information with market context.

Built in 1928, this two-and-a-half-story property is configured as a duplex and requires renovation. Its finished area includes four bedrooms and three bathrooms: the first floor has two bedrooms and two bathrooms, while the second has two bedrooms and one bathroom. A stairway leads to an unfinished third floor that is not configured as living space.

Key Highlights

  • Duplex configuration in a two‑and‑a‑half‑story structure
  • Four bedrooms and three bathrooms in the finished area
  • First floor has two bedrooms and two bathrooms; second floor has two bedrooms and one bathroom

Property Analytics

Who owns this building? See the owner, sales and loan history
Open Analytics

Lease Details

2
Residential units

Location Intelligence

Trade Area within ½ mile

3,824
Businesses Nearby

Demographics for 33040, FL

35,958
Population
19,001
Households
1.9
Avg Household Size
44
Median Age
38%
College-Educated
92%
High-School Grad
17.7 sq mi
ZIP Area
2,032
Density / Sq Mi
$79,038
Median Household Income
$42,458
Median Earnings
$2,079
Median Rent
$766,400
Median Home Value
Check the figures for this property Cap Rate, Value Estimation, Potential NOI and more
View Realmo Analytics

Market

Vacancy Rate% for Multifamily in South region

8.5% 2022
10.2% 2023
11.4% 2024
11.3% 2025

Frequently Asked Questions

What type of property is this?
Duplex - The first two floors provide four bedrooms and three bathrooms, with additional unfinished space above.
Where is this duplex located?
The property is located at 646 William Street Key West, FL.
What is the asking price?
The asking price for this property is $1,400,000.
What are key features of this property?
This property features: Duplex configuration in a two‑and‑a‑half‑story structure; Four bedrooms and three bathrooms in the finished area; First floor has two bedrooms and two bathrooms; second floor has two bedrooms and one bathroom
Research This Page with AI

Rey answers here. ChatGPT, Grok and Claude get the same data packet.

Includes: Price & PSF · Cap rate · Location · Zoning

Ask Rey → ChatGPT Grok Claude
Preferred Make Realmo a preferred source.

Our comps and market reports get this label in your Google results.

Add as a preferred source on Google One click on Google
More about this property
Thanks! Your message was sent.
Error! Your message wasn't sent.
Please enter your name
Please enter email
Please enter the email in the correct format
Please enter phone
Please enter the number in the correct format
Please enter message
Why this one?
Saved