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58652 Overseas Highway

Marathon, FL, 33050

Active

$3,495,000

4

Bedrooms

4

Bathrooms

2,429 sqft

Living Area

1981

Year Built

24,394

Lot Size (sqft)

99

Days on Market

Dock Score™

DockOnly
65
Good

What shaped this score

Ocean Access
Fits boats up to ~100ft+ (est.)
Bridge-free to ocean
Dock present
·Draft not independently verified

DockOnly.com rating, not provided by the MLS or listing broker.

Dock & Water AccessMLS

OceanfrontOpen Water

AI Aerial Imagery Detection

Dock DetectedDeep Water Indicators~106-144 ft dock

Detected by AI from open-source aerial mapping imagery and may not reflect current conditions. This information was not provided by the MLS or listing broker. Always verify dock infrastructure with the listing agent.

Navigation RouteDockOnly

Data sources: SFWMD AHED waterway polygons · FHWA National Bridge Inventory 2024 · Not provided by the MLS or listing broker.

Description

Enter the bougainvillea-lined gates of Casa Feliz, a private oceanfront retreat on Grassy Key offering expansive water views, a white sand beach, and resort-style living. A strong-producing vacation rental with established history and future bookings in place, this exceptional estate presents an attractive investment opportunity. Set on more than 24,000 square feet of lush grounds with mature landscaping, fruit trees, fresh herbs, and .29 acres of bay bottom, Casa Feliz is designed for relaxation and entertaining. An observation pier provides access for kayaking, paddleboarding, fishing, and enjoying abundant marine life. Dockage is available nearby at Duck Key Marina or Grassy Key Marina, if desired. The property's unique orientation captures both sunrise and sunset views, a rare feature in the Keys. Outdoor amenities include a saltwater pool with cascading waterfalls, spillover spa, and a fully equipped poolside cabana featuring a wet bar, refrigerator, ice maker, and cooking area. A fire table and beachside fire pit offer inviting spaces to gather beneath the stars. Completely renovated down to the studs in 2022, the three-story residence was redesigned to maximize ocean views throughout. Four custom bedroom suites, each with a private en-suite bath, comfortably accommodate guests. The top-floor penthouse suite features a private balcony, 180-degree ocean views, custom 96-inch circular bed, and kitchenette with coffee station. Accordion impact-glass doors create a seamless connection between indoor and outdoor living. The gourmet kitchen features Café appliances, an induction cooktop, quartz countertops, mosaic tile backsplash, wine cooler, glass shelving, and multiple dining areas. Additional highlights include a movie theater, library loft, Control4 smart technology, custom millwork, and a mural by a local artist. Come discover why Grassy Key is the place to be.

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See the property and tour the dock. A licensed waterfront specialist will arrange your private showing.

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Location

Marathon, FL, 33050

No price history available for this property.

Displayed by Blue Mar Real Estate Group Inc., Licensed Florida Real Estate Broker (DBPR CQ1018554) · [email protected]

Listing courtesy of Ocean Sotheby's International via Florida Keys MLS

Last checked: 11 hours ago

Listing updated: August 22, 2026

© 2026 Florida Keys Board of REALTORS®, Inc. All rights reserved. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange (IDX) program of the Florida Keys Board of REALTORS®. Information is deemed reliable but not guaranteed and should be independently verified. All properties are subject to prior sale, change, or withdrawal.

IDX information is provided exclusively for consumers' personal, non-commercial use. It may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Nearest Bridge Clearances

Florida Keys, critical for tall/large vessels

No bridge data available for this location.
FEMA Flood Zone VE
BFE: 11ft

Coastal High Hazard

View FEMA Flood Map →
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Mortgage Calculator

Estimate your monthly payment for this waterfront property

20%

$699,000 down

%
Principal & Interest$18,135/mo
Property Tax (est. ~1.2%, varies by county)$3,495/mo
Home Insurance (est.)$250/mo
Total Monthly Payment$21,880
Loan Amount: $2,796,000Rate: 6.75%
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$3,495,000Tour the dockSchedule a Showing
Navigation note: Navigation routes show the shortest mapped path to open water. A vessel taller than the binding bridge clearance may still reach open water via a longer alternate route that we don't currently map. Verify navigability with a local captain or surveyor before relying on it.