Discover exceptional waterfront living in the heart of Key Colony Beach. This concrete constructed half duplex offers over 2,100 square feet with three bedrooms, three bathrooms inside and 37.5 feet of dockage. A rare and highly desirable interior staircase welcomes you from the above flood first floor, seamlessly connecting both levels of the home. Downstairs is completely built above flood and features a one bedroom, one bathroom suite with additional living area, ideal for guests or extended family. Step through sliding glass doors to a spacious wood deck and 37.5 feet of dockage. Enjoy the ocean breeze and shade under the lush buttonwood tree. Upstairs, enjoy open concept living with a bright and airy kitchen, dining, and living area designed for effortless entertaining. The primary suite boasts a recently renovated bathroom with step-in tiled shower, quartz topped double vanity and tiled flooring. Nearby, a second guest bedroom offers its own ensuite for added comfort and privacy. Recent updates include a newer AC, 2018 standing seam metal roof, and termite tenting with a transferable warranty, providing peace of mind for years to come. With its rare downstairs living, expansive square footage, and thoughtfully designed layout, this property presents a unique opportunity to own a well-cared-for waterfront residence in one of the most desirable areas of the Florida Keys. Key Colony Beach welcomes primary and seasonal guests with the 9-hole par 3 golf course, tennis and pickle ball courts, Sunset Park, City Hall, police department, multiple restaurants, boat ramp and marina. Enjoy the island lifestyle with amenities galore!
For sale
Price cut: $35K (5/13)
$1,275,000
391 10th St, Key Colony Beach, FL 33051
3beds
2,166sqft
Half Duplex, Single Family Residence
Built in 1988
3,920 Square Feet Lot
$-- Zestimate®
$589/sqft
$-- HOA
What's special
Three bathroomsThree bedroomsLush buttonwood treeOpen concept livingBright and airy kitchenTiled flooringStep-in tiled shower
- 85 days |
- 404 |
- 9 |
Zillow last checked:
Listing updated:
Listed by:
Ally Kelley 727-459-0493,
Ocean Sotheby's International,
Jo Ann Cook 305-360-7968,
Ocean Sotheby's International
Source: FLKMLS,MLS#: 619329
Originating MLS: Marathon/Lower Keys
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Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 3
- Bathrooms: 3
- Full bathrooms: 3
Cooling
- Central Air, Ceiling Fans(s)
Appliances
- Included: Washer, Stainless Steel Appliance(s), Disposal, Microwave, Oven, Refrigerator, Dishwasher, Dryer
Features
- Entrance Foyer, Storage, Quartz Countertops
- Flooring: Tile, Laminate
- Doors: Sliding Glass Doors
- Windows: Awning Windows, Accordion
Interior area
- Total interior livable area: 2,166 sqft
Property
Parking
- Parking features: Open, Off Street, Guest
- Has uncovered spaces: Yes
Features
- Levels: Two
- Stories: 2
- Patio & porch: Open Porch/Balcony, Deck
- Fencing: Fenced
- Has view: Yes
- View description: Canal
- Has water view: Yes
- Water view: Canal
- Waterfront features: Canal Front, Waterfront, Dock: Wood, Dock Length: 37
Lot
- Size: 3,920 Square Feet
- Features: Less Than 1/4 Acre
Details
- Parcel number: 00076300000000
- Zoning: R-2A
- Zoning description: Key Colony Two Family
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Half Duplex, Single Family Residence
- Attached to another structure: Yes
Materials
- CBS
- Roof: Metal
Condition
- Year built: 1988
Utilities & green energy
- Sewer: Municipal Sewer, Community Swr Plant, Public Sewer
- Utilities for property: FKAA, Cable Available, Buyer to Verify
Community & HOA
Community
- Features: Community Boat Ramp, Bike Paths, Tennis Court(s)
- Security: Patrolled Area
- Subdivision: Key Colony Bch 1st Addn Amd Plat (53.5)
HOA
- Has HOA: No
- Services included: None
Location
- Region: Key Colony Beach
Financial & listing details
- Price per square foot: $589/sqft
- Tax assessed value: $1,017,107
- Annual tax amount: $6,525
- Date on market: 4/2/2026
- Listing terms: No Seller Finance
Estimated market value
Not available
Estimated sales range
Not available
Not available
Price history
| Date | Event | Price |
|---|---|---|
| 5/13/2026 | Price change | $1,275,000-2.7%$589/sqft |
Source: | ||
| 4/2/2026 | Listed for sale | $1,310,000+191.8%$605/sqft |
Source: | ||
| 6/28/2012 | Sold | $449,000-35.8%$207/sqft |
Source: | ||
| 8/4/2010 | Listing removed | $699,000$323/sqft |
Source: Coldwell Banker Schmitt Real Estate Co. #548025 Report a problem | ||
| 3/1/2009 | Listed for sale | $699,000$323/sqft |
Source: Coldwell Banker Schmitt Real Estate Co. #548025 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $6,525 +0.5% | $680,158 +2.9% |
| 2024 | $6,493 +3.3% | $660,990 +3% |
| 2023 | $6,288 +3.9% | $641,738 +3% |
| 2022 | $6,054 -0.8% | $623,047 +3% |
| 2021 | $6,105 +4.7% | $604,900 +8.9% |
| 2020 | $5,832 | $555,612 -2.7% |
| 2019 | $5,832 -2.5% | $570,881 +5.8% |
| 2018 | $5,981 +9.4% | $539,659 -1.4% |
| 2017 | $5,468 +1.1% | $547,293 -0.8% |
| 2016 | $5,407 -2.1% | $551,537 +13.9% |
| 2015 | $5,523 | $484,297 |
Find assessor info on the county website
Monthly payment
Est. payment$--/mo
Payment breakdown
Explore the cost of this home by adjusting the details. Changes won't be saved.All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
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Climate risks
Neighborhood: 33051
Nearby schools
GreatSchools rating
- 5/10Stanley Switlik Elementary SchoolGrades: PK-5Distance: 4.5 mi
- 5/10Marathon SchoolGrades: 6-12Distance: 3.6 mi
A local agent can set up tours, give advice and negotiate with sellers.
- Florida
- Monroe County
- Key Colony Beach
- 33051
- 391 10th St
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