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Residential

646 William Street, Key West

$1,400,000.00

Bedroom 3 bedrooms
Bathroom 2 baths

  • MLS #: 621406
  • Address: 646 William Street, Key West, FL 33040
  • Date Listed: 9/23/2026
  • Days on Market: 2
  • SQFT: 1780
  • Acres: 0.09
  • Restrictions: Unknown
  • Subdivision: Old Town - Unlisted (1.0)

Location Location

Agent Comments Agent Comments
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.

Interior Features Interior Features
  • Cool System: Wall/Window Unit(s)
  • Heat System: Hot Water
  • Floors: Combo

Exterior Features Exterior Features
  • Parking: Off Street
  • Roof: Metal
  • Pool: No

Additional Features Additional Features
  • County: Monroe
  • Property Type: Duplex
  • Tax Number: 2147483647
  • Water/Sewer: FKAA
  • Stories: 2 Stories
  • Year Built: 1928