1,031 Sq. Ft.
$581 / Sq. Ft.
1,031
Sq. Ft.
$581
per Sq. Ft.

Description

Beautifully updated and move-in ready, this elevated Key Colony Beach half duplex is the perfect blend of island charm, comfort, and value! Step inside to a bright, inviting main living area featuring an updated kitchen with stunning new granite countertops, creating the ideal space for gathering with family and friends. Priced at just $599,000, this is one of the best opportunities to own in one of the Florida Keys' most desirable waterfront communities. Offering 2 bedrooms, 2 bathrooms, and 1,031...Beautifully updated and move-in ready, this elevated Key Colony Beach half duplex is the perfect blend of island charm, comfort, and value! Step inside to a bright, inviting main living area featuring an updated kitchen with stunning new granite countertops, creating the ideal space for gathering with family and friends. Priced at just $599,000, this is one of the best opportunities to own in one of the Florida Keys' most desirable waterfront communities. Offering 2 bedrooms, 2 bathrooms, and 1,031 square feet of living space, this home also features a brand-new metal roof for added peace of mind. The spacious primary suite includes a walk-in closet and a private balcony overlooking the backyard--the perfect place to sip your morning coffee or relax in the evening while enjoying the tropical breeze. The expansive lower-level living and entertaining area provides the ultimate bonus space to unwind after a day on the water, watch the game, host friends, or simply embrace the laid-back Keys lifestyle. The generous backyard provides plenty of space to design your own private tropical oasis--add a pool, lush landscaping, or an outdoor kitchen to create the Florida Keys retreat you've always imagined. Location is everything, and this home delivers! Just steps from the Cabana Club, waterfront parks, pickleball and tennis courts, playgrounds, golf, restaurants, walking paths, and all the amenities that make Key Colony Beach one of the most sought-after communities in the Florida Keys. Whether you're searching for a full-time residence, a vacation escape, or an investment property, this home offers an unbeatable combination of location, exceptional value, and lifestyle. Don't miss your chance to own your slice of paradise at an incredible price!
  1. Listed by Brenner Scheel Casey • Florida Keys Real Estate Group

Property Details for 310 3rd Street

Waterfront
None
Waterfront
No
Zoning
R-1A - Key Colony Single Family
Subdivision
Key Colony Beach (53.5)
Directions
US 1 to Sadowski to E Ocean Dr. to 3rd St.
Vehicle Storage
Open Parking, Covered Parking
Pets
Pets Allowed
LISTING UPDATED: 07/13/2026 10:58 AM

Property Details for 310 3rd Street

StatusActive
MLS #620613
Days on Market1
Taxes$4,710 / year
HOA Fees-
Condo/Co-op Fees-
Property TypeUnit Duplex
MLS TypeResidential / Half Duplex
Year Built1982
Lot Size0.08 AC / 3,300 SF
CountyMonroe County

Location

Listing Courtesy of Florida Keys Real Estate Group
Add your commute

Building Information for 310 3rd Street

Stories-Residences-Year Built1982Lot Size0.08 AC / 3,300 SF

Payment Calculator

$3,377 per month

30 year fixed, 6.36% Interest

Principal and Interest

$2,985

Property Taxes

$393

HOA Dues

$0

The Payment Calculator is for illustrative purposes only.

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Property Information for 310 3rd Street

Summary
Location and General Information
  • Waterview: No Waterview
  • Area: 17 - Vaca Cut - Both Sides Holiday Inn/Key Colony
  • Absolute Longitude: 81.01465
  • Control Depth: 0
  • Off Shore Island: No
  • Listing Board: Marathon/Lower Keys
  • Side: Ocean
  • Mile Marker: 53.5
  • Marathon Neighborhood: Marathon East - Gulf (Airport to Vaca)
  • 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: 2025
  • Tax Exemptions: None
Property
Lot Information
  • Lot Size: 30 X 110
  • Acres: 0.08
  • Parcel #: 00072590-000000
  • Land Size: Less Than 1/4 Acre
Property and Assessments
  • Legal: BK 2 N 1/2 LT 31 KEY COLONY BEACH PB3-120 SHELTER KEY
  • MLS Approved: Y
  • SqFt Source: Property Data Card
  • Flood Zone: AE
  • Rentals Allowed: Yes
  • Deed Restrictions: No
  • Picture Count: 35
  • Document Count: 0
  • Building Style: Above Flood: Unknown
Utilities
  • Utilities: FKAA, Buyer to Verify
  • Pub Sewer HkUp: Yes
  • Species List: No
  • Pool: No
  • Porch/Balcony: Open Porch/Balcony
Interior and Exterior Features
Interior Features
  • Floor: Tile, Laminate
  • Interior Features: Drapes/Blinds Incl, Walk-in Closet(s), Storage, Granite Counter Top
  • Appliances: Washer, Microwave, Oven, Refrigerator, Dishwasher, Dryer
Exterior Features
  • Roof: Metal Roof
  • Construction: CBS
  • Dockage: None
  • Exterior Features: Rain Gutters, Storage, Shed
  • Windows/Doors: Impact Rstnce Window
Room Information
  • Specialty Rooms: Laundry Room, Other

Property History for 310 3rd Street

DateEvent & SourcePriceAppreciation
Jul 13, 2026

Listed (Active)

FKMLS #620613

$599,000
Jan 2, 2025

Expired

FKMLS #610266

Jun 3, 2024

Price Change

FKMLS #610266

$630,000
DateEvent & SourcePrice
07/13/2026

Listed (Active)

FKMLS #620613

$599,000
01/02/2025

Expired

FKMLS #610266

06/03/2024

Price Change

FKMLS #610266

$630,000

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

Public Records for 310 3rd Street

Taxable ValueLand$267,300Additions$188,654Total$455,954
Tax Record2024$4,569 ($381 / month)
Home Facts
Beds2Baths2Total Finished SqFt1,031 SqFtAbove Grade Finished SqFt1,031 SqFtStories2Lot Size3,300 SqFtStyleSingle Family ResidenceYear Built1982Year Renovated2002CountyMONROEAPN00072590-000000

Schools near 310 3rd 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

310 3rd Street is for sale in Key Colony Beach, FL 33051. This property was listed for sale on July 13, 2026 by Florida Keys Real Estate Group, it's currently listed at $599,000. It has been on the market for a total of 1 days and was last sold on January 31, 2020. This listing's school district is Monroe. Nearby schools include Stanley Switlik Elementary School, Marathon School and Coral Shores High School. 310 3rd Street is a 2-bed, 2-bath, 1,031 sqft built in 1982.

No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of any information, descriptions or measurements (including square footage measurements and property condition), such should be independently verified through appropriate means, including, but not limited to, in person inspection and public records, and Compass International Holdings, its subsidiaries, affiliates and independently owned and operated franchisees, and their affiliated agents and associated third parties expressly disclaim 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 seller's discretion. No financial or legal advice provided. Equal Housing Opportunity.

Listing Courtesy of Florida Keys Real Estate Group

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.