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Anchor Line Realty

Anchor Line Realty specializes in buyer brokerage, real estate sales listings, and long term property management in Key West & the Florida Keys.

Call: (305) 766-6835

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$9,500,000
6500-6600 Overseas Highway
Marathon, FL 33050
MLS# 610643
6 beds  |  11 baths  |  10852 sqft


6500-6600 Overseas Highway
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Property Description
Casa Mañana Shores, located in the heart of Marathon, is a developer's dream or a private owner's potential paradise. This secured gulf front estate offers 3.86 acres of land and is surrounded by an eight foot concrete wall with three gated entrances. The property boasts approximately 540 linear feet of Highway frontage and 695 linear feet of water frontage. It offers 218 feet of concrete seawall, including a cut-in protected boat slip. There is even room for a helicopter landing pad to be installed. This unique property is zoned mixed-use commercial and comes with one commercial transferable building right. It is currently a private residence with a separate garage and workshop. The 10,852 square foot mansion is solid concrete construction. It has ten bedrooms, six and a half bathrooms, a sauna, game room and great room. Repairs are needed, and the interior needs significant updating. An attached partially screened enclosure holds an impressive 12 ft deep swimming pool that measures 25 x 50 ft. The garage/workshop is a separate structure with two rooms with a mini split air conditioner. The existing structures could be demolished for those with a vision, leaving you with a 3.86 acre blank canvas in the center of town. Its versatile zoning designation offers multiple possibilities for residential and/or commercial use. Over the years it has previously housed a motel with a marina, a 19-unit trailer park, and a restaurant. This property presents the opportunity to create the ultimate secluded retreat of your dreams!

Details
Maps
Contract Information
Listing Board: Marathon/Lower Keys
As is Rght to Inspct: Yes
Species List: Yes
Current Price: $9,500,000
Listing Date: 2024-07-02
List Price: $9,500,000
Location, Tax & Legal
City: MARATHON
Off Shore Island: No
Mile Marker: 50.5
Marathon Neighborhood: Mid-Town - Gulf (Sombrero to Airport)
Side: Bay/Gulf
Flood Zone: AE,AE,AE,AE,VE,VE
Alternate Key #: 1120855
Parcel #: 00103540-000000
Zoning: MU - Mixed Use Commercial Mixed Use
Deed Restrictions: Unknown
Legal: 11 66 32 KEY VACCAS PT LOT 1 AND PT LOT 1 (OLD S/R 4-A) AND LOTS 10 AND11 CASA MANANA SHORES PB2-50
Taxes: 20125.66
Tax Year: 2023
Pub Sewer HkUp: Yes
Street #: 6500-6600
Street Name: Overseas
Street Suffix: Highway
Key/Island: Marathon
State/Province: FL
Zip Code: 33050
County: Monroe
Subdivision: Casa Manana Shores (50.5)
Area: 15 - Sombrero Bch Rd to Vaca Cut Gulfside
General Property Description
Realtor.COM Type: Residential - Single Family
Waterfront: Yes
Control Depth: 4
Lot SqFt: 168141
Pool: Yes
Lot Sqft Source: Property Data Card
Total Units: 0
Acres: 3.86
SqFt Source: Tax Records
Rentals Allowed: With Restrictions
Min Rental Days: 7
Style: Single Family
Year Built: 1967
Living Apx SqFt: 10852
Total Bedrooms: 6
Full Baths: 10
Half Baths: 1
Total Baths: 11
Remarks & Misc
Remarks – Consumer: Casa Mañana Shores, located in the heart of Marathon, is a developer's dream or a private owner's potential paradise. This secured gulf front estate offers 3.86 acres of land and is surrounded by an eight foot concrete wall with three gated entrances. The property boasts approximately 540 linear feet of Highway frontage and 695 linear feet of water frontage. It offers 218 feet of concrete seawall, including a cut-in protected boat slip. There is even room for a helicopter landing pad to be installed. This unique property is zoned mixed-use commercial and comes with one commercial transferable building right. It is currently a private residence with a separate garage and workshop. The 10,852 square foot mansion is solid concrete construction. It has ten bedrooms, six and a half bathrooms, a sauna, game room and great room. Repairs are needed, and the interior needs significant updating. An attached partially screened enclosure holds an impressive 12 ft deep swimming pool that measures 25 x 50 ft. The garage/workshop is a separate structure with two rooms with a mini split air conditioner. The existing structures could be demolished for those with a vision, leaving you with a 3.86 acre blank canvas in the center of town. Its versatile zoning designation offers multiple possibilities for residential and/or commercial use. Over the years it has previously housed a motel with a marina, a 19-unit trailer park, and a restaurant. This property presents the opportunity to create the ultimate secluded retreat of your dreams!
Directions: Located Gulfside at MM 50.5. Concrete wall with three gated entrances. Use far west entrance.
Association Info
Mandatory Home Owners Asc: No
1st Right of Refusal: No
Association Fee $: 0
Fee Includes
None: 1
Dockage
Dock Length: 218
Dock: Concrete
Basin: 1
Boat Slip: 1
Seawall: Concrete
Tax Exemptions
Homestead: 1
Appliances
Dryer: 1
Oven: 1
Range: 1
Refrigerator: 1
Washer: 1
Pets
Pets Allowed: 1
Cooling
Central Air: 1
Heating
Central: 1
Fireplace(s): 1
Forced Air: 1
Waterfront
Bay Front: 1
Gulf Front: 1
Open Water: 1
Waterview
Bay/Gulf View: 1
Open Water View: 1
Property Condition
Fixer Upper: 1
Specialty Rooms
Sauna/Steam Room: 1
Building Style
Above Flood: Unknown
Stories: 2 Stories
Vehicle Storage
Garage: 1
Guest Parking: 1
Open Parking: 1
RV Parking Open: 1
Detached: 1
Off Street Parking: 1
Trailer Storage: 1
Security
Electric Gate: 1
Patrolled Area: 1
Construction
CBS: 1
Concrete: 1
Land Size
2 Less Than 5 Acres: 1
Furnished
Negotiable: 1
Terms
Cash: 1
Conventional: 1
Utilities
Elect Separate Meter: 1
FKAA: 1
Municipal Sewer: 1
Water Separate Meter: 1
Porch/Balcony
Patio: 1
Title
Title Ins - Buyer: 1
Exterior Features
Outdoor Shower: 1
Privacy Wall/Fence: 1
Storage: 1
Pool Info
In Ground: 1
Concrete: 1
Dimensions: 25 x 50
Decked: 1
Roof
Concrete Roof: 1
Status Change Info
Status: Active
Property Features
Fee Includes: None
Tax Exemptions: Homestead
Waterfront: Bay Front; Gulf Front; Open Water
Waterview: Bay/Gulf View; Open Water View
Dockage: Basin; Boat Slip
Property Condition: Fixer Upper
Vehicle Storage: Garage; Detached; Guest Parking; Off Street Parking; Open Parking; RV Parking Open; Trailer Storage
Furnished: Negotiable
Cooling: Central Air
Heating: Central; Fireplace(s); Forced Air
Utilities: Elect Separate Meter; FKAA; Municipal Sewer; Water Separate Meter
Specialty Rooms: Sauna/Steam Room
Appliances: Dryer; Oven; Range; Refrigerator; Washer
Exterior Features: Outdoor Shower; Privacy Wall/Fence; Storage
Pool Info: In Ground; Concrete; Decked
Construction: CBS; Concrete
Roof: Concrete Roof
Pets: Pets Allowed
Security: Electric Gate; Patrolled Area
Land Size: 2 Less Than 5 Acres
Terms: Cash; Conventional
Title: Title Ins - Buyer

Listing Office: Ocean Sotheby's International

Last Updated: June - 09 - 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.


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David Austin, Owner/Broker
Anchor Line Realty, LLC
820 Ashe Street
Key West, FL 33040
www.anchorlinerealty.com
[email protected]
305.766.6835
Member, National Association of Realtors (NAR)
Member, Florida Association of Realtors (FAR)
Member, Key West Association of Realtors (KWAR)