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3 Beds
2 Baths
1,780 sqft

$1,400,000

646 William Street, Key West FL, 33040

Price per sqft$786.52
Built in1928
Property size1,780 sqft
Property typeMulti-family

Overview

Active

Listed Sep 25, 2026

Updated 4h ago

644 William Street The property being sold is 644 William Street. The current property record/card reflects both 644 and 646 William Street, although the property being conveyed is 644 William Street. The structure at 644 William Street is a two-and-a-half-story home currently configured as a duplex and is in need of renovation. The first floor consists of two bedrooms and two bathrooms. The second floor contains two bedrooms and one bathroom. A stairwell provides access to the third floor, which is currently unfinished and is not completed or configured as living space. In its current condition, the property contains four bedrooms and three bathrooms of finished living area, with additional unfinished space on the third floor. The property is currently being used/configured as a duplex and will require renovation.

$9,314/mo

Est. mortgage payment based on a $1,400,000 home price.

All estimates are provided by Luxury Presence for informational purposes only. Actual amounts may vary.

Additional information

MLS® ID
621406

Interior Features

Bedrooms
3
Bathrooms
2
Cooling
Yes
Heating
Yes
Basement
No

Exterior Features

Lot Size
0.09 Acres

Other Property Details

Taxes
$13,850
Tax Frequency
Annually
View
Yes
Pets Allowed
Yes
MLS provider logo

Listed by Louis M Paez with Coldwell Banker Schmitt Real Estate Co. (KW)
Listing Contact: 305-395-1081 

The IDX display contains information sourced from the Florida Keys Board of REALTORS® as of 9/26/2026. This data is intended solely for personal, non-commercial use and is not to be utilized for any other purposes except to identify potential properties for purchase. Although the MLS data displayed is typically considered reliable, it is not guaranteed to be accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and are advised to conduct their own investigations or seek professional assistance. Other sources besides the Listing Agent may have contributed to the MLS data presented. Unless expressly specified in writing, the Broker/Agent has not confirmed any information obtained from external sources. The Broker/Agent may or may not have acted as the Listing and/or Selling Agent and cannot guarantee the accuracy of property locations displayed on any map. Any compensation offers are solely made to participants of the MLS where the listing is registered.

©2026 Florida Keys Board of REALTORS® all rights reserved.

Data last updated on 9/26/2026 at 5:11 PM UTC

 

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