$4,400,000
Price
4
Beds
3,878 Sq. Ft.
$1,135 / Sq. Ft.
3,878
Sq. Ft.
$1,135
per Sq. Ft.

Description

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...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.
  1. Listed by Gail Borysiewicz • Gail's Island Realty, Inc.

Property Details for 771 12th Street

Waterfront
Canal Front
Waterfront
Yes
Zoning
R-1A - Key Colony Single Family
Subdivision
Coury Sub (53.5)
Directions
From us 1 turn onto Sadowski Causeway , turn right onto West Ocean drive, veer right at sunset park and follow 12th street to the just before the end. House on your left 771 12th St Key Colony Beach
Vehicle Storage
Garage, Off Street Parking
LISTING UPDATED: 12/24/2025 09:19 PM

Property Details for 771 12th Street

StatusActive
MLS #617826
Days on Market2
Taxes$11,746 / year
HOA Fees-
Condo/Co-op Fees-
Compass TypeSingle Family
MLS TypeResidential / Single Family
Year Built1986
Lot Size0.33 AC / 14,400 SF
CountyMonroe County

Location

Listing Courtesy of Gail's Island Realty, Inc.
Add your commute

Building Information for 771 12th Street

Stories2Year Built1986Building Size-Lot Size0.33 AC / 14,400 SF

Payment Calculator

$22,721 per month

30 year fixed, 6.28% Interest

Principal and Interest

$21,742

Property Taxes

$979

HOA Dues

$0

The Payment Calculator is for illustrative purposes only.

Property Information for 771 12th Street

Summary
Location and General Information
  • Waterview: Canal View
  • Area: 17 - Vaca Cut - Both Sides Holiday Inn/Key Colony
  • Absolute Longitude: 81.026765
  • Control Depth: 5
  • Off Shore Island: No
  • Listing Board: Marathon/Lower Keys
  • Side: Ocean
  • Mile Marker: 53.5
  • Marathon Neighborhood: N/A
  • Neighborhood Feature: Tennis Courts, Bike Paths, Other Area Features
  • Key/Island: Key Colony
Taxes and HOA Information
  • Association Info: Mandatory Home Owners Asc: No
  • Association Info: 1st Right of Refusal: No
  • Fee Includes: None
  • Furnished: Negotiable
  • Tax Year: 2024
  • Tax Exemptions: None
Property
Lot Information
  • Acres: 0.33
  • Parcel #: 00079871-003000
  • Land Size: 1/4 - 1/2 Acre
Property and Assessments
  • Legal: LT 30 AND NLY 1/2 LT 29 COURY SUBDIVISION PB7-13 KEY COLONY OR802-477 OR804-2046 OR806-2246 OR807-590 OR823-2450 OR850-1
  • MLS Approved: Y
  • SqFt Source: Tax Records
  • Flood Zone: AE
  • Rentals Allowed: With Restrictions
  • Deed Restrictions: Unknown
  • Picture Count: 55
  • Document Count: 0
  • Building Style: Above Flood: Yes
  • Security: Patrolled Area
Utilities
  • Utilities: FKAA, Cable Available, Buyer to Verify, Municipal Sewer
  • Pub Sewer HkUp: Yes
  • Pool: Yes
  • Pool Info: Heated: Yes
  • Pool Info: In Ground
  • Porch/Balcony: Open Porch/Balcony, Roof Top Deck, Deck
Interior and Exterior Features
Interior Features
  • Floor: Tile
  • Interior Features: Entrance Foyer, Granite Counter Top, Window Treatments, Storage, Smoke Alarms, Elevator
  • Pre-Wired: Cable
  • Appliances: Washer, Ice Machine, Freezer, Disposal, Microwave, Oven, Range, Refrigerator, Dishwasher, Dryer
Exterior Features
  • Roof: Concrete Roof
  • Shutters: Accordion
  • Dockage: Dock Length: 120
  • Dockage: Dock: Wood
  • Dockage: Seawall: Concrete
  • Construction: CBS
  • Dockage: Boat Lift
  • Exterior Features: Built-in Grill, Hot Tub, Fencing, Chickee Hut
  • Windows/Doors: Sliding Glass Doors
Room Information
  • Specialty Rooms: Other

Property History for 771 12th Street

DateEvent & SourcePriceAppreciation
Dec 24, 2025

Listed (Active)

FKMLS #617826

$4,400,000
Jun 1, 2021

Temp Off Market

FKMLS #595665

Apr 7, 2021

Listed (Active)

FKMLS #595665

$2,600,000
Sep 19, 2014

Sold (Public Record)

Public Record #451271793

$1,295,000

+496.3% / yr

Sep 19, 2014

Sold

FKMLS #560636

$1,295,000
Jul 29, 2014

Pending

FKMLS #560636

May 1, 2014

Sold (Public Record)

Public Record #415743852

$650,000
Mar 12, 2013

Listed (Active)

FKMLS #560636

$1,295,000
DateEvent & SourcePrice
12/24/2025

Listed (Active)

FKMLS #617826

$4,400,000
06/01/2021

Temp Off Market

FKMLS #595665

04/07/2021

Listed (Active)

FKMLS #595665

$2,600,000
09/19/2014

Sold (Public Record)

Public Record #451271793

$1,295,000

+496.3% / yr

09/19/2014

Sold

FKMLS #560636

$1,295,000
07/29/2014

Pending

FKMLS #560636

05/01/2014

Sold (Public Record)

Public Record #415743852

$650,000
03/12/2013

Listed (Active)

FKMLS #560636

$1,295,000

For completeness, Compass often displays two records for one sale: the MLS record and the public record.

Public Records for 771 12th Street

Taxable ValueLand-Additions-Total-
Tax Record2024$11,746 ($979 / month)
Home Facts
Beds4Baths3.5Total Finished SqFt3,878 SqFtAbove Grade Finished SqFt3,878 SqFtStories2Lot Size14,400 SqFtStyleSingle Family ResidenceYear Built1986Year Renovated2010CountyMONROEAPN00079871-003000

Schools near 771 12th Street

This home is within Monroe.
Rating
School
Type
Grades
Distance
Public - PK to 5
Public - 6 to 12
Public - 9 to 12
Charter - PK to 5
Rating
School
Distance
Stanley Switlik Elementary School
PublicPK to 5

Marathon School
Public6 to 12

Coral Shores High School
Public9 to 12

Big Pine Academy
CharterPK to 5

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

Similar Homes

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771 12th Street is a single family home for sale in Key Colony Beach, FL 33051. This property was listed for sale on December 24, 2025 by Gail's Island Realty, Inc., it's currently listed at $4,400,000. It has been on the market for a total of 2 days and was last sold on September 19, 2014. This listing's school district is Monroe. Nearby schools include Stanley Switlik Elementary School, Marathon School and Coral Shores High School. 771 12th Street is a 4-bed, 5-bath, 3,878 sqft single family home built in 1986.

No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of descriptions or measurements (including square footage measurements and property condition), such should be independently verified, and Compass, Inc., its subsidiaries, affiliates and their agents and associated third parties expressly disclaims any liability in connection therewith. Photos may be virtually staged or digitally enhanced and may not reflect actual property conditions. Offers of compensation are subject to change at the discretion of the seller. No financial or legal advice provided. Equal Housing Opportunity. Subject to change at any time. Compass makes no guarantee, warranty or representation regarding the accuracy of any waterfront feature, water view or waterfront view.

Listing Courtesy of Gail's Island Realty, Inc.

Based on information from one of the following Multiple Listing Services: Beaches Multiple Listing Service, Inc., Martin County REALTORS® of the Treasure Coast, Inc., Miami Association of REALTORS®. Information being provided is for the visitor’s personal, noncommercial use and may not be used for any purpose other than to identify prospective properties visitor may be interested in purchasing. The data contained herein is copyrighted by Beaches Multiple Listing Service, Inc., Martin County REALTORS® of the Treasure Coast, Inc., Miami Association of REALTORS® is protected by all applicable copyright laws. Any dissemination of this information is in violation of copyright laws and is strictly prohibited. Property information referenced on this web site comes from the Internet Data Exchange (IDX) program of the MLS. This web site may reference real estate listing(s) held by a brokerage firm other than the broker and/or agent who owns this web site. For the avoidance of doubt, the accuracy of all information, regardless of source, is deemed reliable but not guaranteed and should be personally verified through personal inspection by and/or with the appropriate professionals.