574-576 99th St, Marathon, FL 33050
Property image
Property image
FOR SALE

574-576 99th St
Marathon, FL 33050

  • 4 Beds
  • 4 Baths
  • 1,854 sqft

$1,300,000

Original price: $1,400,000
Est. Mortgage $7,516/mo*
Get Pre-Qualified

$1,300,000

Original price: $1,400,000
Est. Mortgage $7,516/mo*
Get Pre-Qualified
4 Beds
4 Baths
1,854 sqft

Home Highlights

Outdoor
Patio
Climate Control
Heating & Cooling
HOA
None
Price/Sqft
$701
Listed
71 days ago

Local Information

  • Map ViewExplore the area around 574-576 99th St.
  • Schools1 Preschool School1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Description

Beautifully renovated and fully turnkey duplex located on a deep-water canal in the heart of Marathon. This rare income-producing property features two spacious 2BD/2BA units, each offering approximately 927 sq. ft. of updated coastal living with impact windows and doors, granite countertops, stainless steel appliances, tile flooring throughout, and covered parking. Renovated in 2018, the property blends modern finishes with the relaxed Florida Keys boating lifestyle.
A true boater's dream, each side offers its own 30' concrete dock and seawall (60' total) complete with 30-amp shore power. Enjoy quick ocean access and easy Gulf access via Vaca Cut, making this an exceptional setup for anglers and boating enthusiasts alike. The waterside outdoor spaces are designed for entertaining and enjoying the Keys lifestyle, featuring string lighting, solar-lit dock pilings, under-dock fish lights that attract snapper and tarpon, and frequent manatee visits along the canal.
Located directly adjacent to Oceanfront Park & Dog Park, owners and guests enjoy immediate access to one of Marathon's premier waterfront parks offering a dog park, kayak launch, open green space, waterfront walking areas, playgrounds, and frequent community events. Conveniently located near Sombrero Beach, shopping, dining, and Florida Keys Marathon International Airport.
Currently tenant occupied with both units rented month-to-month. This property also has strong vacation rental potential. Ideal opportunity to live in one side while renting the other, or maximize income potential with a fully turnkey investment property in one of the Florida Keys' most desirable boating communities. Current Insurances are very reasonable:
$3,841 Flood (Covers both sides)
576 - $4,303 Wind 574 - $4,129 Wind
576 - $860 HO/Liability 574 - $721 HO/Liabilty
(Pictures are of 576 99th, 574 is the same layout/finishes. Access can be arranged)

Home Details for 574-576 99th St

Interior Features

Beds & Baths
Number of Bedrooms: 4Number of Bathrooms: 4Number of Bathrooms (full): 4
Dimensions and Layout
Living Area: 1854 Square Feet
Appliances & Utilities
Appliances: Washer, Dishwasher, Refrigerator, Range, Microwave, Disposal, Stainless Steel Appliance(s)DishwasherDisposalMicrowaveRefrigeratorWasher
Heating & Cooling
Heating: Has Heating Unspecified TypeHas CoolingAir Conditioning: Central AirHas HeatingHeating Fuel: Has Heating Unspecified Type
Windows, Doors, Floors & Walls
Flooring: Tile
Levels, Entrance, & Accessibility
Floors: Tile
View
No View
Room & Shared Space
Shared space is furnished

Exterior Features

Exterior Home Features
Patio / Porch: PatioNo Private Pool
Parking & Garage
No Attached Garage
Frontage
WaterfrontOn Waterfront

Days on Market

Days on Market: 71

Property Information

Year Built
Year Built: 1959
Property Type / Style
Property Type: ResidentialProperty Subtype: DuplexArchitecture: Conch
Building
Construction Materials: CBSNot a New Construction
Property Information
Condition: Updated/RemodeledParcel Number: 00351980000100

Price & Status

Price
List Price: $1,300,000Price Per Sqft: $701

Active Status

MLS Status: Active

Location

Direction & Address
City: MarathonCommunity: Coral Colony (52.0)

Agent Information

Listing Agent
Listing ID: 619866

Building

Building Area
Building Area: 1854 Square Feet

Community

Community Features: Bike PathsNot Senior Community

HOA

HOA Fee Includes: NoneNo HOAHOA Fee: No HOA Fee

Lot Information

Lot Area: 5220 sqft

Offer

Listing Terms: No Seller Finance, Cash, Conventional, FHA

Rental Terms, Policies & Fees

Furnished

Miscellaneous

Mls Number: 619866

Additional Information

Bike Paths
Last check for updates: about 12 hours ago
Listing courtesy of Alexia Mann, (404) 988-2259
Seafarer Realty LLC
Source: FLKMLS, MLS#619866
Also Listed on FLKMLS, Key West AOR, Key West AOR, MLKAR.

Market trends in Marathon

Last updated June 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$723K
$19.17KMoM
Sale-to-List Price
94.6%
Price per sq ft
$628
$22MoM
Available listings
251
17MoM

Price History for 574-576 99th St

DatePriceEventSource
06/08/2026$1,300,000PriceChange
MLKAR #619866
05/12/2026$1,400,000Listed For SaleKey West AOR #619866
04/01/2026$1,650,000ListingRemovedFLKMLS #617878
02/02/2026$1,650,000PriceChange
FLKMLS #617878
12/31/2025$1,700,000Listed For SaleKey West AOR #617878
03/26/2021$825,000Sold
FLKMLS #589125

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Comparable Sales for 574-576 99th St

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
9922 Aviation Blvd, Marathon, FL
0.35
Multi-Family Home
$1,500,000
07/31/25
4
4
1,666
9920-9922 Aviation Boulevard, Marathon, FL
0.35
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$1,500,000
07/31/25
4
4
1,666
1877-1875 107th St, Marathon, FL
0.41
Multi-Family Home
$410,000
10/21/25
4
2
1,656
625 73rd Street Ocean #A, Marathon, FL
1.26
Multi-Family Home
$510,000
04/03/26
4
3
1,203
571 8th St, Key Colony Beach, FL
1.38
Multi-Family Home
$1,900,000
01/16/26
5
4
2,333
908 66th St, Marathon, FL
1.57
Multi-Family Home
$763,000
03/31/26
4
3
2,074
591 9th St, Key Colony Beach, FL
1.31
Multi-Family Home
$760,000
12/23/25
2
2
1,185

Nearby homes

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Assigned Schools

These are the assigned schools for 574-576 99th St.
View nearby schools on GreatSchools
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

What Locals Say about Marathon

At least 61 Trulia users voted on each feature.

  • 83 % Say car is needed

  • 79 % Say people would walk alone at night

  • 76 % Say parking is easy

  • 72 % Say it's quiet

  • 70 % Say it's dog friendly

  • 70 % Say yards are well-kept

  • 68 % Say there's holiday spirit

  • 61 % Say it's walkable to restaurants

  • 53 % Say there's wildlife

  • 53 % Say they plan to stay for at least 5 years

  • 51 % Say there are community events

  • 48 % Say kids play outside

  • 44 % Say neighbors are friendly

  • 37 % Say it's walkable to grocery stores

  • 36 % Say there are sidewalks

  • 29 % Say streets are well-lit

Sourced by Trulia users. Learn more about our methodology.
  • 4yrv5tc4qr
    "Seafood festival, theater, music festival, turtle releases, homecoming parade, 4th of July fireworks on the beach"
    1
    Flag
  • Ingridfox
    "people love walking dogs on the beach and dog dog park at Sombrero Beach. A lot of restaurants are dog friendly. This is a great place for dog owners. "
    1
    Flag
  • C E.
    "There is no place for kids to hang out really except for the skate park. There are no malls, no skating rinks, no places for kids to meet safely. "
    1
    Flag
  • Jan M.
    "We have basic public transportation. I’d take a taxi anywhere in town. .............................,,"
    0
    Flag
  • Erin F.
    "There’s plenty of grass, sidewalks and quiet roads to walk along.. plus the public beach is always a dogs favorite adventure.. just pick up after your dog!"
    2
    Flag
  • Thurmankolb
    "Yes! Dog park just down the street. Lots of neighbors know each other by our dogs. Great vets n Marathon and good groomer."
    6
    Flag
  • Thurmankolb
    "Lots of community events and activities. Fishing tournaments, seafood festival, school carnivals, etc... "
    2
    Flag
  • Jamie B.
    "Everyone gets together for the kids at Halloween. We have a community park with special events planned for the kids and the beach is the sight for a special 4th of July. "
    0
    Flag
  • Abiezer31
    "Of course ,the neighbors the owner and dog are very nice I’m very proud living in my house.and this neighborhood "
    3
    Flag
  • Darren S.
    "I live off the beaten path across the street from a golf course. It's very quiet and tranquil. throb marinas surrounding the property and can walk to All shops and stores."
    0
    Flag
  • Cyndiepalmer
    "We are a friendly neighborhood. You walk your street and say Hi anytime. It is a safe street to live "
    0
    Flag
  • Ksperkinson
    "Safe clean near ocean good police pet friendly hospital is coming along in the construction have contract here at hospital looking forward to finding a good place for 3 months"
    0
    Flag
  • Stephanie M.
    "A lot of kids and cars. A fire station that is noisey but nice. Lizards everywhere. There is one hotel on this small island. There are A lot of Vacation homes here and crab catchers. When it rains you can't see the road."
    0
    Flag
  • Lb2071
    "water front community , is a small island called Flamingo Island. We have a 9 hole golf course and just 5 minutes from Publix and Kmart. Sombrero beach is right at the outset of the canals on the Atlantic ocean and the people are very loving and friendly."
    0
    Flag
  • Gonzalez8834
    "Marathon is a great place to life and have a family, very safe, quiet and full of great people. ......"
    0
    Flag
  • Tom A. C. M.
    "I live here (14 years) and love the area. Close accessibility to shopping, schools, churches, golf, beach, walking, biking. "
    0
    Flag
  • Anne K.
    "Lived here for many years and is one of the best places to live in Marathon. Conveniently located near schools, parks, shopping and beach just minutes away."
    0
    Flag
  • Debra G.
    "Only 8 miles from Marathon. Away from the winter traffic, airport noise. Crystal clean, flow through canals. Great place to vacation and a great place to live. "
    0
    Flag

LGBTQ Local Legal Protections

Alexia Mann, Seafarer Realty LLC
Agent Phone: (404) 988-2259
MLS Internet Data Exchange (IDX) information is provided exclusively for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing, and that the data is deemed reliable but is not guaranteed accurate by the Florida Keys MLS.
574-576 99th St, Marathon, FL 33050 is a 4 bedroom, 4 bathroom, 1,854 sqft multi-family built in 1959. This property is currently available for sale and was listed by FLKMLS on May 12, 2026. The MLS # for this home is MLS# 619866.