1,031 Sq. Ft.
$538 / Sq. Ft.
1,031
Sq. Ft.
$538
per Sq. Ft.

Description

Discover this charming and affordable 2-bedroom, 2-bath half duplex with an open-concept living, dining, and kitchen area - perfect for relaxed island living. Featuring a freshly painted exterior, new A/C (2025), lovingly maintained and stilted. Plenty of outdoor living areas and covered parking, a one-car garage, plus space for a trailer or RV, all of your tropical toys. A spacious primary suite offers a walk-in closet, and a comfortable layout which is ideal for your family home, employee housing,...Discover this charming and affordable 2-bedroom, 2-bath half duplex with an open-concept living, dining, and kitchen area - perfect for relaxed island living. Featuring a freshly painted exterior, new A/C (2025), lovingly maintained and stilted. Plenty of outdoor living areas and covered parking, a one-car garage, plus space for a trailer or RV, all of your tropical toys. A spacious primary suite offers a walk-in closet, and a comfortable layout which is ideal for your family home, employee housing, or Keys weekend getaway. Located just steps from the Cabana Pool and Beach Club, you can easily walk or bike around the entire city to enjoy its many amenities, including restaurants, marina, post office, golf, pickleball, tennis, bocce ball, three playgrounds, basketball, and the beautiful Sunset Park. Conveniently located near several airports: 10 minutes to Marathon Airport, just over 1 hour to Key West International, 2 hours to Miami International, and 2.5 hours to Fort Lauderdale International. Enjoy the best of Keys living in this welcoming home; comfortable, convenient, and move-in ready! Located in the very heart of the Keys: Key Colony Beach!
  1. Listed by Karen D Raspe, PA • Ocean Sotheby's International
  2. Listed by Ally Kelley • Ocean Sotheby's International

Property Details for 300 3rd Street

Waterfront
None
Waterfront
No
Zoning
R-2A - Key Colony Two Family
Subdivision
Key Colony Bch 1st Addn Amd Plat (53.5)
Directions
Overseas Hwy Mile Marker 53.5 turn at light onto Sadowski/KCB Causeway. Bear left onto E. Ocean Dr - Turn Left onto 3rd St - Follow to #300 3rd on right
Vehicle Storage
Garage, RV Parking Open, Covered Parking, Trailer Storage, Off Street Parking, Guest Parking, Attached, Carport
Pets
Pets Allowed
LISTING UPDATED: 01/11/2026 11:04 AM

Property Details for 300 3rd Street

StatusContingent
MLS #617359
Days on Market55
Taxes$4,577 / year
HOA Fees-
Condo/Co-op Fees-
Compass TypeUnit Duplex
MLS TypeResidential / Half Duplex
Year Built1982
Lot Size0.08 AC / 3,300 SF
CountyMonroe County

Location

Listing Courtesy of Ocean Sotheby's International
Add your commute

Building Information for 300 3rd Street

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

Payment Calculator

$3,086 per month

30 year fixed, 6.15% Interest

Principal and Interest

$2,705

Property Taxes

$381

HOA Dues

$0

The Payment Calculator is for illustrative purposes only.

Property Information for 300 3rd Street

Summary
Location and General Information
  • Waterview: No Waterview
  • Area: 17 - Vaca Cut - Both Sides Holiday Inn/Key Colony
  • Absolute Longitude: 81.01463
  • 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)
  • Neighborhood Feature: Community Boat Ramp, Bike Paths, Airstrip, Beach, Tennis Courts
  • Key/Island: Key Colony
Taxes and HOA Information
  • Association Info: Mandatory Home Owners Asc: No
  • Association Info: 1st Right of Refusal: No
  • Fee Includes: Water, None
  • Furnished: Furnished
  • Tax Year: 2025
  • Tax Exemptions: None
Property
Lot Information
  • Lot Size: 30 x 110
  • Acres: 0.08
  • Parcel #: 00072590-000100
  • Land Size: Less Than 1/4 Acre
Property and Assessments
  • Legal: KEY COLONY BEACH PB3-120 SHELTER KEY S1/2 LOT 31 BLK 2
  • MLS Approved: Y
  • SqFt Source: Property Data Card
  • Flood Zone: AE
  • Rentals Allowed: Yes
  • Deed Restrictions: Unknown
  • Picture Count: 51
  • Document Count: 0
  • Building Style: Above Flood: Yes
  • Building Style: Stilt Column Height: Medium - 5Ft - 9Ft
  • Property Condition: Updated/Remodeled
  • Security: Patrolled Area
  • Title: Title Ins - Buyer
Utilities
  • Utilities: FKAA, Cable Available, Buyer to Verify, Community Swr Plant
  • Pub Sewer HkUp: Yes
  • Species List: No
  • Pool: No
  • Handicap Access: No
Interior and Exterior Features
Interior Features
  • Floor: Tile
  • Interior Features: Pantry, Window Treatments, Smoke Alarms
  • Appliances: Washer, Microwave, Range, Refrigerator, Dishwasher, Dryer
Exterior Features
  • Roof: Shingle Roof
  • Shutters: Panel
  • Construction: CBS
  • Dockage: None
  • Windows/Doors: Other Windows/Doors

Property History for 300 3rd Street

DateEvent & SourcePriceAppreciation
Dec 24, 2025

Backup Contract

FKMLS #617359

Nov 17, 2025

Listed (Active)

FKMLS #617359

$555,000
Apr 7, 2003

Sold (Public Record)

Public Record #112958307

$180,000
Mar 26, 2003

Sold

FKMLS #512666

$180,000
Dec 17, 2002

Pending

FKMLS #512666

Aug 23, 2002

Listed (Active)

FKMLS #512666

$187,500
Aug 6, 2002

Expired

FKMLS #510323

Feb 7, 2002

Listed (Active)

FKMLS #510323

$187,500
DateEvent & SourcePrice
12/24/2025

Backup Contract

FKMLS #617359

11/17/2025

Listed (Active)

FKMLS #617359

$555,000
04/07/2003

Sold (Public Record)

Public Record #112958307

$180,000
03/26/2003

Sold

FKMLS #512666

$180,000
12/17/2002

Pending

FKMLS #512666

08/23/2002

Listed (Active)

FKMLS #512666

$187,500
08/06/2002

Expired

FKMLS #510323

02/07/2002

Listed (Active)

FKMLS #510323

$187,500

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

Public Records for 300 3rd Street

Taxable ValueLand$267,300Additions$203,402Total$470,702
Tax Record2024$4,396 ($366 / month)
Home Facts
Beds2Baths2Total Finished SqFt1,031 SqFtAbove Grade Finished SqFt1,031 SqFtStories2Lot Size3,300 SqFtStyleSingle Family ResidenceYear Built1982Year Renovated2007CountyMONROEAPN00072590-000100

Schools near 300 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.

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Listing Courtesy of Ocean Sotheby's International

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.