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$2,395,000 Just Listed

  • For Sale
  • Active
  • Single Family
  • 4 Beds
  • 2 Full Baths
  • 2,088 Sq. Ft.
  • Updated 31 minutes ago
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New construction waterfront living in the heart of Coco Plum. This beautifully designed 4-bedroom, 3-bath residence combines modern coastal style, exceptional outdoor living, and direct boating access in one of Marathon's most desirable waterfront neighborhoods. Thoughtfully positioned to take advantage of the setting, the home offers expansive open-water views from nearly every room and a bright, open-concept layout designed for both everyday living and entertaining. The main living level features a spacious living and dining area surrounded by natural light and water views, along with two guest bedrooms and a full bath. Upstairs, two generously sized primary suites each feature private en-suite baths and elevated panoramic views, creating peaceful private retreats above the water. Outdoor living is a true highlight, with three covered terraces spanning both levels, a large resort-style pool, and a convenient poolside prep station with sink and storage. Whether hosting guests, relaxing by the pool, or enjoying a quiet morning overlooking the water, the home is designed to embrace the Florida Keys lifestyle. Boaters will appreciate approximately 50 feet of deep-water dockage with quick ocean access, along with a fish-cleaning station, bait freezer, and covered parking for added convenience. Ideally located near Coco Plum Beach and just minutes from Marathon's dining, shopping, and attractions, this newly constructed waterfront residence offers an exceptional combination of modern comfort, boating access, privacy, and island living, perfect as a full-time residence, vacation retreat, or investment property.

Full Property Details for 171 Ave D

General

  • Price: $2,395,000
  • Taxes: $10,763 (2025)
  • Status: Active
  • Type: Single Family
  • Source: 927
  • MLS ID: 621168
  • Updated: 8/31/2026
  • Added to Site: 3 day(s) ago

Interior

  • Interior Features: Walk-in Closet(s)
  • Appliances: Stainless Steel Appliance(s), Dishwasher, Dryer, Microwave, Oven, Range, Refrigerator, Washer
  • Flooring: Vinyl, Tile

Rooms

Bathrooms

  • Total Bathrooms: 2
  • Full Bathrooms: 2

Bedrooms

  • Total Bedrooms: 4

Additional Information

  • Shared Amenities: Bike Paths, Beach, Airport/Runway
  • Pool: Yes
  • Pool Description: Concrete, Heated, In Ground
  • Security/Safety: No Security

Exterior

  • Deck/Patio: Open Porch/Balcony
  • Porch/Patio/Deck: Open Porch/Balcony

Parking

  • Parking Features: Open, Covered, Carport

Location

  • Area: 18 - East of Holiday Inn US #1 & Coco Plum
  • County: Monroe
  • Subdivision: Coco Plum (54.6)
  • Driving Directions: US-1 to Coco Plum Drive. Follow Coco Plum Drive, then turn onto Avenue D. Continue to 171 Avenue D.

Community

  • Assoc. Fees Include: None
  • Pets Allowed: Yes

Heating & Cooling

  • Central air: Yes
  • Air Conditioning: Yes
  • Cooling Type: Central Air, Ceiling Fans(s)

Structural Information

  • Architectural Style: Above Flood
  • Construction Status: New Construction
  • Construction: CBS
  • Roof: Metal
  • Windows/Doors: Impact Rstnce Doors, Impact Rstnce Window
  • Square Feet: 2,088
  • Sq. Ft. Source: Property Data Card
  • Year Built: 2023
  • Property Condition: New Construction

Lot Features

  • Property View: Open Water View, Lake
  • Lot Size (Acres): 0.12
  • Lot Size (Sq. Ft.): 5,184
  • Lot Size Source: Property Data Card
  • Lot Dimensions: x
  • Zoning: RM - Residential Medium

Water Features

  • Water Front: Yes
  • Water View: Yes
  • Water Front Desc.: Open Water

Financial Considerations

  • Tax Amount: $10,763.21
  • Tax Year: 2025

Disclosures and Reports

  • Legal Description: BK 8 WLY 43.75FT OF LT 1B COCO PLUM BEACH REPLAT PB7-66
  • Flood Zone: AE-7
  • APN: 00363810-000210

Listed by Coldwell Banker Schmitt Real Estate Co., Samuel Davis Williams (305) 289-6559

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Listing agent

— 171 Ave D —

  • Samuel Davis Williams

    Coldwell Banker Schmitt Real Estate Co.

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 171 Ave D

School District:Monroe County School District, Middle Torch Key, FL
NameGradesDistance
Stanley Switlik Elementary School
3400 Overseas Highway, Marathon, FL 33050
PK-55.4 mi
Marathon School
350 Sombrero Beach Road, Marathon, FL 33050
6-124.5 mi
Disclaimer: School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 171 Ave D Get Price Alerts and Save Property

Date
Details
Price
Change
Source
8/28/2026
Listed
$2,395,000
199.38%
MLS
1/24/2023
Sold
$800,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 171 Ave D

Year
Property Taxes
Change
Tax Assessment
Change
2025
$10,763
5%
$1,227,313
15%
2024
$10,206
289%
$1,066,275
95%
2023
$2,624
100%
$545,925
353%
2021
$1,311
-17%
$120,422
-41%
2022
$1,573
20%
$203,004
58%
2021
$1,311
-52%
$128,821
-51%
2019
$2,715
14%
$263,848
10%
2018
$2,373
3%
$239,862
4%
2017
$2,293
-3%
$230,754
—
2016
$2,367
—
$231,010
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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*These costs are estimates, and the interest rates assume exceptional credit standing.

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NMLS#: 1598647

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Listed by Coldwell Banker Schmitt Real Estate Co., Samuel Davis Williams (305) 289-6559

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171 Avenue D, Marathon, FL 33050 (MLS# 621168) is a Single Family property with 4 bedrooms and 2 full bathrooms. 171 Avenue D is currently listed for $2,395,000 and was received on August 28, 2026. Want to learn more about 171 Avenue D? Do you have questions about finding other Single Family real estate for sale in Marathon? You can browse all Marathon real estate or contact a Coldwell Banker agent to request more information.

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