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KAROL MARSDEN, PA          305-395-1975          karolrealtor@gmail.com

58652 Overseas Highway, Marathon, FL 33050

$3,495,000
Property Type: Residential Bedrooms: 4 Baths: 4 Square Footage: 2,429 Lot Size (sq. ft.): 24,394 Status: Active
Current Price: $3,495,000 List Date: 5/15/2026 Last Modified: 8/22/2026

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.

More Information MLS# 619913

Contract Information

Listing Board: Marathon/Lower Keys As is Rght to Inspct: Yes Species List: Yes Current Price: $3,495,000 Listing Date: 2026-05-15 List Price: $3,495,000

Location, Tax & Legal

City: MARATHON Off Shore Island: Yes Mile Marker: 58 Marathon Neighborhood: Grassy Key Side: Ocean Alternate Key #: 1450031 Parcel #: 00366860000000 Zoning: RM - Residential Medium Deed Restrictions: Unknown Legal: BK 1 LT 7 CRAINS SUBD PB1-51 GRASSY KEY Taxes: 14033.66 Tax Year: 2025 Pub Sewer HkUp: Yes Street #: 58652 Street Name: Overseas Street Suffix: Highway Key/Island: Marathon State/Province: FL Zip Code: 33050 County: Monroe Subdivision: Crains Sub (58.0) Area: 19 - Crawl Key & Grassy Key

General Property Description

Realtor.COM Type: Residential - Single Family Waterfront: Yes Control Depth: 1 Lot Size: 60 X 410 Lot SqFt: 24394 Pool: Yes Lot Sqft Source: Property Data Card Acres: 0.85 SqFt Source: Appraisal Rentals Allowed: Yes Min Rental Days: 7 Style: Single Family Year Built: 1981 Living Apx SqFt: 2429 Total Bedrooms: 4 Full Baths: 4 Total Baths: 4

Remarks & Misc

Remarks – Consumer: 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. Directions: From US-1, turn south to 58652 Overseas Highway. Home is right across the street from Grassy Key RV Park.

Association Info

Mandatory Home Owners Asc: No 1st Right of Refusal: No Association Fee $: 0

Fee Includes

None: 1

Dockage

Dock: Composite

Tax Exemptions

None: 1

Appliances

Dishwasher: 1 Disposal: 1 Dryer: 1 Freezer: 1 Microwave: 1 Oven: 1 Range: 1 Refrigerator: 1 Stainless Steel Appliance(s): 1 Washer: 1 Wine Cooler: 1

Pets

Pets Allowed: 1

Cooling

Ceiling Fans(s): 1

Waterfront

Oceanfront: 1 Open Water: 1

Waterview

Ocean View: 1 Open Water View: 1

Floor

Tile: 1 Wood: 1

Interior Features

Drapes/Blinds Incl: 1 Quartz Countertops: 1 Security System: 1 Smoke Alarms: 1

Property Condition

Updated/Remodeled: 1

Specialty Rooms

Laundry Room: 1 Theater Room: 1

Building Style

Above Flood: Yes

Windows/Doors

Impact Rstnce Doors: 1 Impact Rstnce Window: 1

Vehicle Storage

Carport: 1

Construction

CBS: 1

Land Size

1/4 - 1/2 Acre: 1

Furnished

Furnished: 1

Terms

No Seller Finance: 1

Utilities

Buyer to Verify: 1 Cable Available: 1 FKAA: 1 Municipal Sewer: 1 Propane: 1

Porch/Balcony

Open Porch/Balcony: 1

Exterior Features

Built-in Grill: 1 Fruit Tree(s): 1 Hot Tub: 1 Lighting: 1 Outdoor Kitchen: 1 Outdoor Shower: 1 Privacy Wall/Fence: 1 Rain Gutters: 1 Sandy Beach: 1 Sprinkler System: 1 Storage: 1 Water Display: 1

Pool Info

In Ground: 1 Lap: 1 Heated: Yes Concrete: 1 Decked: 1

Pre-Wired

Other: Control-4

Roof

Metal Roof: 1

Status Change Info

Status: Active

Property Features

Fee Includes: None Tax Exemptions: None Waterfront: Oceanfront; Open Water Waterview: Ocean View; Open Water View Property Condition: Updated/Remodeled Vehicle Storage: Carport Furnished: Furnished Cooling: Ceiling Fans(s) Utilities: Buyer to Verify; Cable Available; FKAA; Municipal Sewer; Propane Interior Features: Drapes/Blinds Incl; Quartz Countertops; Security System; Smoke Alarms Specialty Rooms: Laundry Room; Theater Room Appliances: Dishwasher; Disposal; Dryer; Freezer; Microwave; Oven; Range; Refrigerator; Stainless Steel Appliance(s); Washer; Wine Cooler Exterior Features: Built-in Grill; Fruit Tree(s); Hot Tub; Lighting; Outdoor Kitchen; Outdoor Shower; Privacy Wall/Fence; Rain Gutters; Sandy Beach; Sprinkler System; Storage; Water Display Pool Info: In Ground; Lap; Concrete; Decked Construction: CBS Floor: Tile; Wood Roof: Metal Roof Pets: Pets Allowed Land Size: 1/4 - 1/2 Acre Terms: No Seller Finance
Listing Office: Ocean Sotheby's International
Last Updated: August - 22 - 2026
The data relating to real estate for sale on this web site comes in part from the Florida Keys MLS, Inc. Information provided is deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. The information being provided is for consumers’ personal, non-commeral use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. IDX data is deemed reliable but is not guaranteed accurate by the MLS.