Knowlson Colony

34 Atlantic Drive, Marathon FL 33037

5 beds · 4 baths

For Sale · Active Listing

$2,890,000

Est. Payment $15,382/mo

MLS Sheet Video

5

Bedrooms

4

Bathrooms

1943

Year Built

2

Garage

29

Days on Market

Description

Huge Direct Oceanfront Compound — One-of-a-Kind with 276-Foot Concrete Dock Adjacent to World-Famous John Pennekamp, Coral Reef State Park & Molasses Reef. Discover a truly exceptional and private oceanfront compound designed for boating enthusiasts, investors, or multi-generational living. Spread across three expansive lots, this rare property includes two distinct homes and direct water access — a combination that’s nearly impossible to find in today’s market. The primary residence features 3 bedrooms and 2 full baths, offering bright, comfortable living spaces and sweeping ocean views. The second home, complete with 2 bedrooms and 2 baths on a separate meter, is ideal for guests, extended family, or short-term rental opportunities. Step outside to unparalleled oceanfront living with a 276-foot concrete dock, perfect for accommodating large vessels, fishing, and launching watercraft. The grounds offer generous room for entertaining, expansion, or simply enjoying the peaceful surroundings of this secluded coastal haven. Highlights: 3 lots with two homes and a 276-ft dock Direct ocean access — idea for boating on the Ocean or Bay. Steps from John Pennekamp Coral Reef State Park Perfect for entertaining, investing, or creating a family retreat Unmatched privacy and coastal lifestyle potential.

Facts

MLS#
A12006854
Subdivision
Knowlson Colony
Property Type
Residential
Property Sub Type
Single Family Residence
Year Built
1943
Lot Size
0 sqft
Sq. Ft.
Sq. Mt.
Price per sq. ft.
Price per sq. mt.
Stories
Garage
2 spaces
Pool
Days on Market
29 days
Listed
Apr 24, 2026
Last Updated
May 23, 2026
Price/Lot Sq.Ft.

Comparable homes

Same ZIP, similar price + bedrooms.

Market insights for Marathon

Live MLS-derived activity. Forecast is a conservative rule-of-thumb estimate — not a guarantee.

Sellers market

May 2026

100/100
Buyers marketSellers market

48

Median days to sold

+4.5%

1-year price forecast (est.)

Price & tax history

From the live MIAMI MLS feed. Older history requires the ListingHistory resource (not yet enabled).

4/24/2026Listed for sale$2,890,000

History reflects fields present on the live MLS record. Full multi-year history requires the MIAMI ListingHistory resource (not yet enabled).

Location

34 Atlantic Drive, Marathon FL 33037Directions

GreatSchools Summary Ratings

Public + private K-12 schools within 5 miles of this listing.

GreatSchoolsData provided by GreatSchools.org © 2026. All rights reserved.

Estimated Monthly Payment

$17,940/mo

Principal & Interest

$15,382

Property Tax

$2,408

Insurance

$150

HOA

$0

20% ($578,000)
7.00%
30 years
1.00% (FL avg ~1.0%)
$0/mo
$150/mo

Estimates only. Actual payment depends on credit, lender, insurance carrier, and FL/Miami-Dade specifics. Contact Rangely for a precise quote.

Rangely Adames

Rangely Adames

Sales Associate | Sunland Group

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Accuracy of listing information is not guaranteed. Listing information is provided for personal consumer, non-commercial use, solely to identify potential properties for potential purchase. All other use is strictly prohibited and may be a violation of federal and state law.

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Updated within 24 hours

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