OFFERED IN A LUXURY AUCTION!Experience unparalleled luxury at 400 South Street, the true Southernmost private residence in the Continental United States. This iconic Key West estate, winter home to esteemed American artist, the late Seward Johnson and his wife, seamlessly blends timeless elegance with modern amenities. The expansive 4,008-square-foot concrete home, situated on a generous lot plus almost one acre of bay bottom, offers five bedrooms and five and a half bathrooms. Upon entering, the formal living room evokes the charm of the Hemingway era, leading to a sunlit Florida room with sliding glass doors that open to a vast outdoor oasis. The primary suite and two guest bedrooms are accessible via an elevator, each opening to a large balcony that provides panoramic views of the Atlantic Ocean. The property boasts a magnificent 50 x 20-foot pool and ample lounging areas, perfect for enjoying ocean breezes and observing local birdlife. With its unique location adjacent to the iconic Southernmost Point buoy and proximity to Key West's vibrant attractions, this estate offers an unparalleled living experience. Additionally, a coveted transient license allows for nightly rentals, presenting a prime investment opportunity or the option for a lavish private or corporate compound. Designated Multifamily (could accommodate up to 8 residential units) and located in the historic commercial tourist district, the possibilities are vast for a savvy investor. Part of the property needs complete renovation and the 1930 SF seawall requires partial restoration. THE Southernmost House is a rare gem in the United States! Due diligence package available upon bid registration.
Sold
$8,500,000
400 South St, Key West, FL 33040
5beds
4,008sqft
Single Family Residence
Built in 1958
1 Acres lot
$8,503,700 Zestimate®
$2,121/sqft
$-- HOA
What's special
Zillow last checked: 7 hours ago
Listing updated: April 28, 2025 at 12:13am
Listed by:
Ellen Gvili 305-304-2933,
Ocean Sotheby's International Realty
Bought with:
John Nazzaro PA, 3052192
Keller Williams Realty Premier Properties
Source: FLKMLS,MLS#: 610694
Originating MLS: Key West Association

Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 5
- Bathrooms: 6
- Full bathrooms: 5
- 1/2 bathrooms: 1
Heating
- Central
Cooling
- Central Air, Ceiling Fans(s)
Appliances
- Included: Dishwasher, Stainless Steel Appliance(s), Gas Appliances, Freezer, Oven, Range, Refrigerator
Features
- Cathedral Ceiling(s), Elevator, Sun/Florida Room
- Flooring: Combination
- Doors: Sliding Glass Doors
- Windows: Skylight(s), Aluminum Frames, Accordion, Roll Down Electric
Interior area
- Total interior livable area: 4,008 sqft
Property
Parking
- Total spaces: 2
- Parking features: Garage, Off Street, Open
- Has garage: Yes
- Has uncovered spaces: Yes
Features
- Levels: Two,Multi/Split
- Stories: 2
- Patio & porch: Open Porch/Balcony, Deck
- Pool features: In Ground, Concrete
- Fencing: Fenced
- Has view: Yes
- View description: Ocean, Water, Bay/Gulf View
- Has water view: Yes
- Water view: Ocean,Water,Bay/Gulf View
- Waterfront features: Oceanfront, Open Water, Gulf Front, Waterfront, Seawall: Concrete, Dock: Other, Dock Permit: Yes
Lot
- Size: 1 Acres
- Features: 1/4 - 1/2 Acre
Details
- Parcel number: 00036380000000
- Zoning: HCT
- Zoning description: Historic Commercial Tourist
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Materials
- CBS
- Roof: Metal
Condition
- Year built: 1958
Utilities & green energy
- Sewer: Municipal Sewer, Public Sewer
- Utilities for property: FKAA, Propane
Community & neighborhood
Community
- Community features: Beach, Bike Paths
Location
- Region: Key West
- Subdivision: Filer Boyle Sub (1.0)
HOA & financial
HOA
- Has HOA: No
- Services included: None