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.
For sale
$3,700,000
431 12th St, Key Colony Beach, FL 33051
4beds
4,369sqft
:
Get pre-qualified$22,768/mo
Single Family Residence
Built in 1993
9,583 Square Feet Lot
$3,476,700 Zestimate®
$847/sqft
$-- HOA
What's special
Beautiful swimming poolOversized windowsDeep-water dockLight-filled residenceWaterfront homeInviting tiki hutDedicated media room
- 133 days |
- 589 |
- 28 |
Zillow last checked:
Listing updated:
Listed by:
Brenner Scheel Casey 305-783-3395,
Florida Keys Real Estate Group
Source: FLKMLS,MLS#: 619302
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 4
- Full bathrooms: 4
Cooling
- Central Air, Ceiling Fans(s), Attic Fan
Appliances
- Included: Washer, Dryer, Dishwasher, Refrigerator, Range, Microwave, Disposal, Ice Maker
- Laundry: Laundry Room
Features
- Built-in Features, Granite Counters, Storage, Walk-in Closet(s)
- Flooring: Tile, Carpet
Interior area
- Total structure area: 4,369
- Total interior livable area: 4,369 sqft
Property
Parking
- Parking features: Attached
- Has attached garage: Yes
Accessibility
- Accessibility features: None
Features
- Levels: Multi/Split
- Patio & porch: Patio
- Exterior features: Rain Gutters, Lighting
- Has private pool: Yes
- Pool features: In Ground, Concrete
- Fencing: Fenced
- On waterfront: Yes
Lot
- Size: 9,583 Square Feet
- Dimensions: 80 X 120
Details
- Additional structures: Gazebo
- Parcel number: 00079871001300
- Zoning: R-1A - Key Colony Single Family
- Other equipment: Irrigation Equipment
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Materials
- CBS, Concrete
Condition
- Year built: 1993
Utilities & green energy
- Utilities for property: Elect Separate Meter
Community & HOA
Community
- Features: Fire Hydrant, Bike Paths
- Security: No Security
- Subdivision: Coury Sub (53.5)
HOA
- Has HOA: No
- Services included: None
Location
- Region: Key Colony Beach
Financial & listing details
- Price per square foot: $847/sqft
- Tax assessed value: $2,532,622
- Annual tax amount: $14,023
- Date on market: 4/1/2026
- Listing terms: Cash,Conventional
Estimated market value
Zestimate®
$3,476,700
Estimated sales range
$3.30M - $3.65M
Rent Zestimate®
$6,981/mo
Price history
| Date | Event | Price |
|---|---|---|
| 4/27/2026 | Price change | $3,700,000-5.1%$847/sqft |
Source: | ||
| 4/1/2026 | Listed for sale | $3,900,000+139.3%$893/sqft |
Source: | ||
| 7/31/2020 | Sold | $1,630,000+48.5%$373/sqft |
Source: | ||
| 8/14/2013 | Sold | $1,097,500-12.2%$251/sqft |
Source: | ||
| 4/17/2013 | Price change | $1,250,000-3.8%$286/sqft |
Source: American Caribbean Real Estate #560174 Report a problem | ||
| 1/31/2013 | Listed for sale | $1,300,000+85.7%$298/sqft |
Source: American Caribbean Real Estate #560174 Report a problem | ||
| 3/20/1996 | Sold | $700,000$160/sqft |
Source: Public Record Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $14,023 +0.2% | $1,494,967 +2.9% |
| 2024 | $14,001 +2.3% | $1,452,835 +3% |
| 2023 | $13,685 +3.9% | $1,410,520 +3% |
| 2022 | $13,176 -1.3% | $1,369,437 +3% |
| 2021 | $13,347 +15.8% | $1,329,551 +16.1% |
| 2020 | $11,523 | $1,145,578 -2.4% |
| 2019 | $11,523 -2.4% | $1,174,021 -7.2% |
| 2018 | $11,807 -0.1% | $1,264,820 +12.7% |
| 2017 | $11,820 +13.2% | $1,122,045 +13.1% |
| 2016 | $10,440 +6.1% | $992,460 -1.6% |
| 2015 | $9,837 | $1,008,422 |
Find assessor info on the county website
Monthly payment
Est. payment
Payment breakdown
Explore the cost of this home by adjusting the details. Changes won't be saved.Climate risks
Neighborhood: 33051
Nearby schools
GreatSchools rating
- 5/10Stanley Switlik Elementary SchoolGrades: PK-5Distance: 4.4 mi
- 5/10Marathon SchoolGrades: 6-12Distance: 3.5 mi
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