# 431 12th Street, Key Colony, FL 33051 > **TL;DR:** 4bd/4ba single family, $3,700,000 ($847/sqft), built 1993, 4,369 sqft. > Pool, Waterfront, A/C. Est. $19,788/mo. Listed 222 days. ## Property at a Glance | Attribute | Value | |-----------|-------| | Price | $3,700,000 | | Price/sqft | $847 | | Bedrooms | 4 | | Bathrooms | 4 full | | Square Feet | 4,369 | | Year Built | 1993 | | Lot Size | 9,583 sqft (0.22 acres) | | Stories | 2 | | Property Type | Single Family (Single Family Residence) | | Status | Active | | Days on Market | 222 | ## Why This Home Stands Out - **Pool** - Patio - **Waterfront** - Waterfront location listed ## Estimated Monthly Costs | Category | Amount | |----------|--------| | Principal & Interest (20% down, 30-year at 6.5%) | $18,709 | | Estimated Insurance | $1,079 | | **Total** | **$19,788** | ## Key Amenities - Pool - Waterfront - A/C ## Property Highlights - Built in 1993 - 0.22 acre lot - 2 stories - Private pool - Waterfront ## Description ### Agent Description 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. ## Location - **Address:** 431 12th Street, Key Colony, FL 33051 - **County:** Monroe - **Neighborhood:** Coury Sub (53.5) - **Coordinates:** 24.721648, -81.025879 - **Google Maps:** https://www.google.com/maps?q=24.721648,-81.025879 ## Listing Agent - **Name:** Brenner Scheel Casey · **License:** BK339103, BK3179545, SL3504409 - **Brokerage:** Florida Keys Real Estate Group - **Broker Phone:** (305) 664-1453 - **Listing URL:** [View original listing](https://www.realtor.com/realestateandhomes-detail/431-12th-St_Key-Colony-Beach_FL_33051_M58307-01061?f=listhub&s=MLKARFL&m=619302&c=propsimple) ## Photos ![431 12th Street - Photo 1](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f2234210897r.jpg) ![431 12th Street - Photo 2](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f1280387814r.jpg) ![431 12th Street - Photo 3](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f2525895338r.jpg) ![431 12th Street - Photo 4](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f909899162r.jpg) ![431 12th Street - Photo 5](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f3373202609r.jpg) ![431 12th Street - Photo 6](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f4235089854r.jpg) ![431 12th Street - Photo 7](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f170099146r.jpg) ![431 12th Street - Photo 8](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f4265120377r.jpg) ![431 12th Street - Photo 9](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f2576434999r.jpg) ![431 12th Street - Photo 10](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f3850639493r.jpg) ![431 12th Street - Photo 11](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f1643139005r.jpg) ![431 12th Street - Photo 12](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f3878790715r.jpg) ![431 12th Street - Photo 13](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f237317723r.jpg) ![431 12th Street - Photo 14](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f3997820395r.jpg) ![431 12th Street - Photo 15](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f852588959r.jpg) ![431 12th Street - Photo 16](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f1408745166r.jpg) ![431 12th Street - Photo 17](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f2240850114r.jpg) ![431 12th Street - Photo 18](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f3407778319r.jpg) ![431 12th Street - Photo 19](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f3393353343r.jpg) ![431 12th Street - Photo 20](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f247767855r.jpg) ![431 12th Street - Photo 21](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f2552694724r.jpg) ![431 12th Street - Photo 22](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f1193861912r.jpg) ![431 12th Street - Photo 23](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f2875571292r.jpg) ![431 12th Street - Photo 24](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f4022728879r.jpg) ![431 12th Street - Photo 25](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f840229252r.jpg) ![431 12th Street - Photo 26](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f2027789975r.jpg) ![431 12th Street - Photo 27](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f4143671393r.jpg) ![431 12th Street - Photo 28](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f562992671r.jpg) ![431 12th Street - Photo 29](http://lh.rdcpix.com/9a1825487f7f2fd212f8d2d551160643l-f1099244838r.jpg) --- **MLS#:** 619302 | **Updated:** 2026-10-28 **Source:** listhub *Copyright © 2026 Marathon and Lower Keys Association of Realtors. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.* [View on PropertySimple](https://www.propertysimple.ai/listing/431-12th-street-key-colony-fl-33051-24b56313a6ed4fe085e71ce2fb949ecd) --- ## Structured Data ```json { "@context": "https://schema.org", "@type": "RealEstateListing", "@id": "https://www.propertysimple.ai/listing/431-12th-street-key-colony-fl-33051-24b56313a6ed4fe085e71ce2fb949ecd#listing", "url": "https://www.propertysimple.ai/listing/431-12th-street-key-colony-fl-33051-24b56313a6ed4fe085e71ce2fb949ecd", "name": "431 12th Street, Key Colony, FL 33051", "description": "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. 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