Experience the essence of refined coastal living in this stunning waterfront residence. 120 foot of rare deep water, private, seawalled dockage. 350 ft to open water access Gulf OR Ocean warm turquoise waters! This is an area said to be some of the best fishing grounds worldwide. Located in one the area's most sought-after luxurious neighborhoods . This home sits on an extra large lot. Land areas include 1 lot plus additional 1/2 lot. Room for additional building on the land. Designed for both elegance and ease, this home blends contemporary sophistication with a relaxed tropical ambiance-ideal for entertaining, hosting, or unwinding by the water.The home features two distinct living areas, offering flexibility and space for both lively gatherings and quiet retreats. There are 4 spacious bedrooms, each with its own ensuite bath, providing privacy and comfort, while large windows invite in natural light and serene views of the surrounding palms and canal.Off the pool, a separate 1 bedroom, 1 bath guest suite offers the perfect retreat for family or visitors, with its own private entrance.The AC'd garage, elevated above flood level, provides a versatile space for storage, vehicles & game room. As a flex space with square footage accounted for in the overall total, it can easily be transformed into additional guest quarters, or creative workspace to suit your lifestyle needs.Use the 3-story elevator to ascend to the expansive rooftop terrace, where endless sky and water views set the stage for unforgettable sunsets or evening gatherings.Outdoors, lush tropical landscaping surrounds the home, offering both privacy and natural beauty. A private 120'' dock provides room for all your toys and direct canal access for boating, kayaking, and fishing--inviting you to fully embrace the waterfront lifestyle.Additional features include a full house generator, under house storage separate from the garage, and a large underground cistern.Owner is also the agent.
For sale
$4,400,000
771 12th St, Key Colony Beach, FL 33051
4beds
3,878sqft
Est.:
Single Family Residence
Built in 1986
0.33 Acres Lot
$3,988,700 Zestimate®
$1,135/sqft
$-- HOA
What's special
Extra large lot
- 65 days |
- 383 |
- 4 |
Zillow last checked: 8 hours ago
Listing updated: February 03, 2026 at 11:57am
Listed by:
Gail V Borysiewicz 305-481-6887,
Gail's Island Realty, Inc.
Source: FLKMLS,MLS#: 617826
Originating MLS: Marathon/Lower Keys
Tour with a local agent
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 5
- Full bathrooms: 4
- 1/2 bathrooms: 1
Heating
- Central
Cooling
- Central Air, Ceiling Fans(s)
Appliances
- Included: Washer, Ice Machine, Freezer, Disposal, Microwave, Oven, Range, Refrigerator, Dishwasher, Dryer
Features
- Entrance Foyer, Granite Counters, Storage, Elevator, Other Specialty Room
- Flooring: Tile
- Doors: Sliding Glass Doors
- Windows: Window Treatments, Accordion
Interior area
- Total interior livable area: 3,878 sqft
Property
Parking
- Parking features: Garage, Off Street
- Has garage: Yes
Features
- Levels: Two
- Stories: 2
- Patio & porch: Open Porch/Balcony, Roof Top Deck, Deck
- Exterior features: Built-in Barbecue
- Has private pool: Yes
- Pool features: Heated, In Ground
- Has spa: Yes
- Spa features: Private
- Fencing: Fenced
- Has view: Yes
- View description: Canal
- Has water view: Yes
- Water view: Canal
- Waterfront features: Canal Front, Waterfront, Seawall: Concrete, Dock: Wood, Dock Length: 120, Dockage: Boat Lift
Lot
- Size: 0.33 Acres
- Features: 1/4 - 1/2 Acre
Details
- Additional structures: Chickee Hut
- Parcel number: 00079871003000
- Zoning: R-1A
- Zoning description: Key Colony Single Family
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Materials
- CBS
- Roof: Concrete
Condition
- Year built: 1986
Utilities & green energy
- Sewer: Municipal Sewer, Public Sewer
- Utilities for property: FKAA, Cable Available, Buyer to Verify, Cable Connected
Community & HOA
Community
- Features: Tennis Court(s), Bike Paths, Other
- Security: Smoke Detector(s), Patrolled Area
- Subdivision: Coury Sub (53.5)
HOA
- Has HOA: No
- Services included: None
Location
- Region: Key Colony Beach
Financial & listing details
- Price per square foot: $1,135/sqft
- Tax assessed value: $2,543,440
- Annual tax amount: $11,745
- Date on market: 12/25/2025
Estimated market value
$3,988,700
$3.79M - $4.19M
$7,889/mo
Price history
Price history
| Date | Event | Price |
|---|---|---|
| 12/25/2025 | Listed for sale | $4,400,000+69.2%$1,135/sqft |
Source: | ||
| 6/2/2021 | Listing removed | -- |
Source: | ||
| 4/16/2021 | Listed for sale | $2,600,000+100.8%$670/sqft |
Source: | ||
| 9/19/2014 | Sold | $1,295,000$334/sqft |
Source: | ||
| 4/13/2014 | Listed for sale | $1,295,000$334/sqft |
Source: American Caribbean Real Estate Report a problem | ||
Public tax history
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $11,771 +0.2% | $1,250,220 +2.9% |
| 2024 | $11,746 +2.5% | $1,214,986 +3% |
| 2023 | $11,463 +3.9% | $1,179,599 +3% |
| 2022 | $11,037 -1.2% | $1,145,242 +3% |
| 2021 | $11,172 +4.9% | $1,111,886 +1.4% |
| 2020 | $10,651 | $1,096,535 +3.3% |
| 2019 | $10,651 +3.1% | $1,062,011 +1.9% |
| 2018 | $10,326 +5.9% | $1,042,210 +2.1% |
| 2017 | $9,752 +4.6% | $1,020,774 +2.1% |
| 2016 | $9,327 -2% | $999,779 +1.4% |
| 2015 | $9,521 | $986,044 |
Find assessor info on the county website
BuyAbility℠ payment
Est. payment
$24,644/mo
Principal & interest
$21637
Property taxes
$3007
Climate risks
Neighborhood: 33051
Nearby schools
GreatSchools rating
- 4/10Stanley Switlik Elementary SchoolGrades: PK-5Distance: 4.3 mi
- 5/10Marathon SchoolGrades: 6-12Distance: 3.5 mi








