NOT LISTED FOR SALE

312 William St Key West, FL 33040

Old Town Neighborhood

Estimated Value: $1,611,277 - $1,674,000

3 Beds
3 Baths
1,376 Sq Ft
$1,201/Sq Ft Est. Value

Sale Details

Date Sold: October 30, 2025

Last sale price $1,650,000 $1,199 Per Sq Ft

Current estimated payment $9,676 / mo

71 Days on Market

Highlights

  • Detached Guest House
  • Wolf Appliances
  • Wood Flooring
  • In Ground Pool
  • Key West Architecture
  • 3-minute walk to Dry Tortugas National Park

About This Home

As of October 2025

Welcome to 312 William Street - A vibrant Conch-style home just steps from Key West's Seaport. This tropical retreat holds true island character and features 2 bedrooms and 2 baths in the main house, plus a charming pool house/ third bedroom with a half bath and outdoor shower for guests.Inside, you'll find exposed beam ceilings and beautiful Dade County pine accent walls that add warmth and character. The kitchen is outfitted with lime green quartz countertops, a Bosch refrigerator, Miele dishwasher, and Wolf gas range. Just off the kitchen, a backlit agate wet bar with a sink, mini fridge, and ice maker makes entertaining a breeze. Pine floors run throughout the home, and the main level stays cool and cozy with recessed lighting in all the right places. Upstairs, both bedrooms open to breezy balconies and enjoy an abundance of natural light. A convenient full bath is located on the main level and a full bath upstairs is shared by both bedrooms. Step outside through French doors to a shady backyard escape with IPE decking, a saltwater/chlorine mix dipping pool, the pool house, and a private outdoor shower. A laundry shed sits just off the back door, along with additional storage for all of your outdoor essentials.Wrapped in a refreshing light blue exterior and finished with deep blue Bahama shutters, this home is the essence of laid-back island living.

Last Agent to Sell the Property

Key West Luxury Finders

Preferred Properties (KW) License #3028945 Listed on: 06/25/2025

Last Buyer's Agent

Key West Luxury Finders

Preferred Properties (KW) License #3028945 Listed on: 06/25/2025

Home Details

Home Type

  • Single Family

Est. Annual Taxes

  • $9,242

Year Built

  • Built in 1901

Lot Details

  • 2,252 Sq Ft Lot
  • Privacy Fence
  • Property is zoned HMDR - Historic Medium Density Residential

Home Design

  • Key West Architecture
  • Frame Construction
  • Metal Roof

Interior Spaces

  • 1,376 Sq Ft Home
  • Wet Bar
  • Bar
  • Recessed Lighting
  • French Doors
  • Entrance Foyer
  • Wood Flooring

Kitchen

  • Oven
  • Range
  • Microwave
  • Ice Maker
  • Bosch Dishwasher
  • Dishwasher
  • Wolf Appliances
  • Quartz Countertops
  • Built-In or Custom Kitchen Cabinets
  • Disposal

Bedrooms and Bathrooms

  • 3 Bedrooms
  • Split Bedroom Floorplan

Laundry

  • Dryer
  • Washer

Pool

  • In Ground Pool
  • Outdoor Shower

Outdoor Features

  • Exterior Lighting
  • Shed

Additional Features

  • Detached Guest House
  • Central Air

Community Details

  • No Home Owners Association
  • Old Town Unrecord Subdivision

Listing and Financial Details

  • Homestead Exemption
  • Assessor Parcel Number 00003530-000000

Home Details

Home Type

Single Family

Est. Annual Taxes

$9,242

Year Built

Built in 1901

Lot Details

2,252 Sq Ft Lot

Listing Details

  • Property Type: Residential
  • Style: Single Family
  • First Right of Refusal: No
  • Mandatory HOA: No
  • Fee Includes: None
  • Key Island: Key West
  • K W Neighborhood: Old Town-S of Truman
  • Limited Representation: No
  • Marathon Neighborhood: N/A
  • Mile Marker: 1.00
  • M L S Identifier: 20060123165453488875000000
  • Pets: Pets Allowed
  • Property Group I D: 19990816212109142258000000
  • Sale Terms: Cash
  • Side: Median
  • State Province: FL
  • Taxes: 9241.83
  • Year Built: 1901
  • Alternate Key Number: 1003689
  • Building Style: Conch
  • Cooling Heating: Central Air
  • Lot Sq Ft: 2252.00
  • Pool Info: In Ground
  • Tax Exemptions: Homestead
  • Building Style Above Flood: No
  • Estimated Living Sq Ft: 1376.00
  • Sewer Hook Up: No
  • Statistical Purposes Only: No
  • Special Features: None
  • Property Sub Type: Detached

Interior Features

  • Interior Amenities: Wet Bar, Bar, Quartz Countertops, Dade County Pine, Built-in Cabinets, Entrance Foyer, Split Bedroom
  • Total Bathrooms: 3.00
  • Full Bathrooms: 1
  • Appliances: Washer, Ice Machine, Gas Appliances, Disposal, Microwave, Oven, Range, Refrigerator, Dishwasher, Dryer
  • Floor: Wood
  • Half Bathrooms: 2
  • Windows/Doors: French Doors
  • Total Bedrooms: 3

Exterior Features

  • Dockage: None
  • Waterfront: None
  • Waterfront: No
  • Construction: Frame
  • Exterior Features: Detached Guest Qtrs, Shed, Privacy Wall/Fence, Outdoor Shower, Lighting
  • Roof: Metal Roof
  • Waterview: No Waterview
  • Pool: Yes

Utilities

  • Utilities: FKAA

Lot Info

  • Deed Restrictions: Unknown
  • Flood Zone: AE
  • Parcel Number: 00003530-000000
  • Land Size: Less Than 1/4 Acre
  • Acres: 0.05

Rental Info

  • Rentals Allowed: Yes

Tax Info

  • Tax Year: 2024

Ownership History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Name Owned For Owner Type

Purchase Details

Listed on
Jun 25, 2025
Closed on
Oct 30, 2025
Sold by
Bought by
Seller's Agent
Key West Luxury Finders
Preferred Properties (KW)
Buyer's Agent
Key West Luxury Finders
Preferred Properties (KW)
List Price
$1,795,000
Sold Price
$1,650,000
Premium/Discount to List
-$145,000
-8.08%
Views
61
Current Estimated Value
$1,652,069

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
$2,069
Avg. Annual Appreciation
0.22%

Purchase Details

Closed on
Feb 21, 2024
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$1,000,000
Interest Rate
6.9%
Mortgage Type
New Conventional

Purchase Details

Closed on
Nov 18, 2011
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$227,250
Interest Rate
4.4%
Mortgage Type
FHA

Purchase Details

Closed on
Jan 27, 2009
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$402,000
Interest Rate
5.08%
Mortgage Type
Unknown

Purchase Details

Closed on
May 3, 1999
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$25,000
Interest Rate
7.06%
Mortgage Type
Credit Line Revolving

Purchase Details

Closed on
Mar 1, 1999
Bought by

Purchase Details

Closed on
Dec 5, 1995
Sold by
Bought by

Purchase Details

Closed on
Jun 1, 1987
Bought by

Purchase Details

Closed on
Jan 1, 1983
Bought by

Purchase Details

Closed on
Dec 1, 1978
Bought by
Source: Public Records

Range of Values:

--
Value Increase
--
Percent Increase
--
Adjusted for Inflation
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Average Value
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List Price
Sold Price
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Home Values in the Area

Source: Public Records

Average Home Value in this Area

Source: Public Records

Purchase History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Buyer Sale Price Title Company
$1,650,000 None Listed On Document
-- None Listed On Document
-- None Listed On Document
$190,000 Attorney
$670,000 Attorney
$425,000 --
$425,000 --
$315,000 --
$289,500 --
$66,000 --
$34,000 --
Source: Public Records

Mortgage History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Status Borrower Loan Amount
Previous Owner $1,000,000
Previous Owner $227,250
Previous Owner $402,000
Previous Owner $25,000
Source: Public Records

Property History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Event Price List to Sale Price per Sq Ft
10/30/2025 10/30/25 Sold $1,650,000 -8.1% $1,199 / Sq Ft
09/04/2025 09/04/25 Pending -- -- --
06/26/2025 06/26/25 For Sale $1,795,000 +8.8% $1,305 / Sq Ft
06/25/2025 06/25/25 Off Market $1,650,000 -- --
06/25/2025 06/25/25 For Sale $1,795,000 -- $1,305 / Sq Ft
Source: Key West Association of REALTORS®

Tax History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $9,242 $1,272,673 $978,876 $293,797
2024 $8,389 $1,266,090 $974,101 $291,989
2023 $8,389 $1,094,539 $816,526 $278,013
2022 $7,346 $917,235 $632,688 $284,547
2021 $6,720 $718,586 $467,950 $250,636
2020 $6,717 $720,771 $464,369 $256,402
2019 $6,519 $692,117 $489,438 $202,679
2018 $6,159 $638,047 $435,010 $203,037
2017 $6,117 $643,813 $0 $0
2016 $5,866 $575,290 $0 $0
2015 $5,445 $503,843 $0 $0
2014 $5,461 $485,189 $0 $0
Source: Public Records

Agents Affiliated with this Home

  • Key West Luxury Finders

    Seller's Agent in 2025

    Key West Luxury Finders

    Preferred Properties (KW)

    (305) 240-0355

    28 in this area

    60 Total Sales

    Key West Luxury Finders
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Map

Source: Key West Association of REALTORS®

MLS Number: 615559

Key West Association of REALTORS®

APN: 00003530-000000

Florida Monroe County Key West 33040 Old Town

312 William St, Key West, FL

Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.

Key West Association of REALTORS® IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed.

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