Rare opportunity to own this corner bay front 4 bedroom 3.5 bath home in the loved neighborhood of Key Colony Beach located in Marathon! This home is newly renovated with one of the best views to sit back relax and enjoy the boats going by or having quick access to the Atlantic Ocean for optimal fishing, lobstering, diving, and stunning views on the boat. With plenty of deep water and a 60 ft dock with a 20,000-pound boatlift, water and electric at the dock, and fish cleaning station, everything is ready to go for all your boating needs. But when it’s time to relax enjoy the oasis of the pool that can be cooled for the summer or if you’re wanting to escape a cold winter to the keys the pool can also be heated. Featuring inside there are 2 living rooms, a stunning kitchen, and custom wood stairs to go upstairs to the bedrooms, the primary has its own split stairs to its side for great privacy. There is also a mini primary bedroom with its own bathroom along with his and her closest. The property has been a very successful six figure earning rental when it is not being utilized by the owners. Having a 2 car garage, 4 car fitting driveway, and space to the left of the driveway for a boat trailer there is plenty of parking for guest and friends to come enjoy the stunning view and atmosphere of this property!
Property Details
Price:
$3,850,000
MLS #:
OM719377
Status:
Active
Beds:
4
Baths:
3.5
Type:
Single Family
Subtype:
Single Family Residence
Subdivision:
KEY COLONY BEACH 1ST ADD
Neighborhood:
33051keycolonybeach
Listed Date:
Feb 23, 2026
Finished Sq Ft:
3,381
Total Sq Ft:
4,647
Lot Size:
10,750 sqft / 0.25 acres (approx)
Year Built:
1993
See this Listing
Schools
Interior
Appliances
Dishwasher, Dryer, Ice Maker, Microwave, Refrigerator, Washer
Bathrooms
3 Full Bathrooms, 1 Half Bathroom
Cooling
Central Air
Flooring
Tile, Vinyl
Heating
Electric
Interior Features
PrimaryBedroom Upstairs, Stone Counters, Thermostat, Walk-In Closet(s)
Laundry Features
Laundry Room
Levels
Two
Exterior
Attached Garage YN
1
Construction Materials
Stucco
Covered Spaces
2
Direction Faces
South
Exterior Features
Private Yard
Garage Spaces
2
Lot Features
Corner Lot
Roof
Tile
View
Water
Waterfront Features
Bay/Harbor
Financial
Tax Year
2025
Taxes
$14,704
Map
Community
- Address770 9TH STREET KEY COLONY BEACH FL
- SubdivisionKEY COLONY BEACH 1ST ADD
- CityKEY COLONY BEACH
- CountyMonroe
- Zip Code33051
Market Summary
Current real estate data for Single Family in KEY COLONY BEACH as of May 03, 2026
2
Single Family Listed
202
Avg DOM
1,090
Avg $ / SqFt
$2,675,000
Avg List Price
Property Summary
- Located in the KEY COLONY BEACH 1ST ADD subdivision, 770 9TH STREET KEY COLONY BEACH FL is a Single Family for sale in KEY COLONY BEACH, FL, 33051. It is listed for $3,850,000 and features 4 beds, 4 baths, and has approximately 3,381 square feet of living space, and was originally constructed in 1993. The current price per square foot is $1,139. The average price per square foot for Single Family listings in KEY COLONY BEACH is $1,090. The average listing price for Single Family in KEY COLONY BEACH is $2,675,000. To schedule a showing of MLS#om719377 at 770 9TH STREET in KEY COLONY BEACH, FL, contact your CENTURY 21 Carioti agent at 800-783-8847.
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Courtesy of KELLER WILLIAMS CORNERSTONE RE. Disclaimer: All data relating to real estate for sale on this page comes from the Broker Reciprocity (BR) of the Orlando/Tampa – FL. Detailed information about real estate listings held by brokerage firms other than CENTURY 21 Carioti include the name of the listing broker. Neither the listing company nor CENTURY 21 Carioti shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. The Broker providing this data believes it to be correct, but advises interested parties to confirm any item before relying on it in a purchase decision. Copyright 2026. Orlando/Tampa – FL. All rights reserved. 770 9TH STREET
KEY COLONY BEACH, FL
