Back to Search
1 / 25
25 photos
+20
431 12th St
Key Colony, FL, 33051
Active$3,700,000
431 12th St
Key Colony, FL, 33051
Active$3,700,000
4
Bedrooms
4
Bathrooms
4,369 sqft
Living Area
1993
Year Built
Key Colony, FL, 33051
Active$3,700,000
Key Colony, FL, 33051
Active$3,700,000
4
Bedrooms
4
Bathrooms
4,369 sqft
Living Area
1993
Year Built
9,600
Lot Size (sqft)
27
Days on Market
AI Photo Analysis
AI analysis is based on listing photos and may not reflect current conditions. This information was not provided by the MLS or listing broker. Always verify dock infrastructure with the listing agent.
Data sources: SFWMD AHED waterway polygons · FHWA National Bridge Inventory 2024 · Not provided by the MLS or listing broker.
Discover an exceptional D'Asign Source designer home in prestigious Key Colony Beach, set on a beautifully landscaped lot with effortless access to both the bay and the open ocean. This spacious 4 bedroom 4 bath, light-filled residence offers generous living areas with soaring ceilings and oversized windows that seamlessly connect the indoors with the stunning natural surroundings. The expansive ground floor is perfectly designed for entertaining and family living, featuring a large living room, gourmet kitchen, formal dining area, and a dedicated media room and one guest bedroom and a two-car garage currently used as a versatile game room. A whole-home stereo system adds to the refined ambiance throughout. Built with enduring quality, the waterfront home features all-concrete construction and a brand-new custom metal imitation barrel tile roof. At the heart of this private oasis lies a beautiful swimming pool with an inviting tiki hut -- an ideal retreat for family gatherings and relaxed entertaining. Complementing this is a deep-water dock equipped with a powerful 30,000-pound hydraulic boat lift, offering effortless access to the bay and beyond. Perfectly suited for a large family or those who love to host, this magnificent Key Colony Beach estate delivers space, luxury, and unparalleled waterfront living in one of the Florida Keys' most sought-after communities.
See the property and tour the dock. A licensed waterfront specialist will arrange your private showing.
Select a date
Key Colony, FL, 33051
Estimate your monthly payment for this waterfront property
$740,000 down
Estimated payments only. Actual rates and terms may vary.
Listing courtesy of Florida Keys Real Estate Group
Last updated: 5/2/2026
© 2026 Miami Association of REALTORS®, Inc. All rights reserved. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of the Miami Association of REALTORS®. Information is deemed reliable but not guaranteed. All properties are subject to prior sale, change, or withdrawal.
IDX information is provided exclusively for consumers' personal, non-commercial use. It may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
Dock Score™
What shaped this score
Dock Score is a DockOnly.com rating. Not provided by or affiliated with the MLS or listing broker. This information was not provided by the MLS.
Nearest Bridge Clearances
Florida Keys — critical for tall/large vessels
$3.5M131 Avenue G
Marathon, FL
Listed by Listing Spark South Florida
$3.0M124 Orchid St
Plantation Key, FL
Listed by The Lab Realty Group, LLC
$3.0M443 Sombrero Beach Rd
Marathon, FL
Listed by Engel & Völkers Islamorada
$4.0M301 Buttonwood Cir #A
Key Largo, FL
Listed by Coldwell Banker Realty
$4.3M16745 Tamarind Rd
Sugarloaf, FL
Listed by American Caribbean Real Estate
$4.5M865 50th Street Gulf
Marathon, FL
Listed by AmeriFirst Realty