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  • 16 Seaside Avenue, Key Largo, FL 33037 (MLS# 620408)

16 Seaside Avenue, Key Largo, FL 33037

New Listing
$11,750,000
Property Type: Residential Bedrooms: 7 Baths: 9 Square Footage: 6,585 Lot Size (sq. ft.): 21,250 Status: Active
Current Price: $11,750,000 List Date: 6/25/2026 Last Modified: 6/25/2026

Description

Beyond the gates lies an oceanfront estate whose finest qualities extend far beyond what you have seen! From its protected private marina offering 6 boat slips and fully integrated smart-home technology to its rooftop observation deck, private sandy shoreline, and resort-caliber outdoor living, every element has been designed to deliver an exceptional waterfront lifestyle. Welcome to 16 Seaside Avenue. This extraordinary 7-bedroom, 7 full and 2 half-bath residence offers luxurious living designed for effortless entertaining and multi-generational enjoyment. From the moment the private gates open, a fully integrated smart home system seamlessly controls the estate--from the front entrance and security system to interior lighting, climate, surround sound, and even the dock lighting--creating a level of convenience rarely found in waterfront homes. A commercial elevator services all three levels, while a whole-house generator provides peace of mind year-round. With everyday living in mind, the home features 2 dedicated laundry rooms for the upmost functionality. Every bedroom serves as a private retreat, complete with its own spa-inspired ensuite bathroom, spacious walk-in closet, and custom built-in closet system. Expansive open living areas are filled with natural light and thoughtfully designed to maximize breathtaking Atlantic Ocean views. Outdoor living rivals that of a private resort. The spectacular oceanfront pool, spa and waterfall, covered gazebo, outdoor kitchen, and integrated indoor and outdoor surround sound create the perfect setting for entertaining. A private sandy beach and pier provide an idyllic place to enjoy spectacular sunrises over the Atlantic, while the rooftop observation deck captures sweeping panoramic ocean views of both the ocean and bay. Best of all this property offers the ability for short term 7-Day rentals! This is a rare opportunity to own an estate designed to deliver the very best of the Florida Keys!

More Information MLS# 620408

Contract Information

Listing Board: Florida Keys As is Rght to Inspct: Yes Species List: No Current Price: $11,750,000 Listing Date: 2026-06-25 List Price: $11,750,000

Location, Tax & Legal

City: KEY LARGO Off Shore Island: No Mile Marker: 94.5 Marathon Neighborhood: N/A Senior Community YN: No Side: Ocean Flood Zone: AE9/10 Alternate Key #: 1608459 Handicap Access: Yes Parcel #: 00492240000000 Zoning: SR - Sub Urban Residential District Deed Restrictions: No Legal: Pt Sq 4 Re-Sub Seaside Pb2-10 Key Largo G57-212 Or773-777 Or773-778 Or917-2251 Or1326-1721 Or3134-136 Or3134-177 Or3156- Taxes: 8516.36 Tax Year: 2025 Pub Sewer HkUp: Yes Street #: 16 Street Name: Seaside Street Suffix: Avenue Key/Island: Key Largo State/Province: FL Zip Code: 33037 County: Monroe Subdivision: Seaside Sub (94.5) Area: 26 - Key Largo S of MM 96.9

General Property Description

Realtor.COM Type: Residential - Single Family Waterfront: Yes Control Depth: 8 Lot Size: 50 X 425 Lot SqFt: 21250 Pool: Yes Lot Sqft Source: Property Data Card Acres: 0.48 SqFt Source: Blue Print Rentals Allowed: Yes Min Rental Days: 7 Style: Single Family Year Built: 2025 Living Apx SqFt: 6585 Total Bedrooms: 7 Full Baths: 7 Half Baths: 2 Total Baths: 9

Remarks & Misc

Remarks – Consumer: Beyond the gates lies an oceanfront estate whose finest qualities extend far beyond what you have seen! From its protected private marina offering 6 boat slips and fully integrated smart-home technology to its rooftop observation deck, private sandy shoreline, and resort-caliber outdoor living, every element has been designed to deliver an exceptional waterfront lifestyle. Welcome to 16 Seaside Avenue. This extraordinary 7-bedroom, 7 full and 2 half-bath residence offers luxurious living designed for effortless entertaining and multi-generational enjoyment. From the moment the private gates open, a fully integrated smart home system seamlessly controls the estate--from the front entrance and security system to interior lighting, climate, surround sound, and even the dock lighting--creating a level of convenience rarely found in waterfront homes. A commercial elevator services all three levels, while a whole-house generator provides peace of mind year-round. With everyday living in mind, the home features 2 dedicated laundry rooms for the upmost functionality. Every bedroom serves as a private retreat, complete with its own spa-inspired ensuite bathroom, spacious walk-in closet, and custom built-in closet system. Expansive open living areas are filled with natural light and thoughtfully designed to maximize breathtaking Atlantic Ocean views. Outdoor living rivals that of a private resort. The spectacular oceanfront pool, spa and waterfall, covered gazebo, outdoor kitchen, and integrated indoor and outdoor surround sound create the perfect setting for entertaining. A private sandy beach and pier provide an idyllic place to enjoy spectacular sunrises over the Atlantic, while the rooftop observation deck captures sweeping panoramic ocean views of both the ocean and bay. Best of all this property offers the ability for short term 7-Day rentals! This is a rare opportunity to own an estate designed to deliver the very best of the Florida Keys!

Association Info

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

Fee Includes

None: 1

Dockage

Dock Length: 220 Dock: Concrete Basin: 1 Boat Lift: 1 Boat Slip: 1

Tax Exemptions

None: 1

Appliances

Dishwasher: 1 Dryer: 1 Freezer: 1 Gas Appliances: 1 Ice Machine: 1 Microwave: 1 Oven: 1 Range: 1 Refrigerator: 1 Stainless Steel Appliance(s): 1 Washer: 1 Wine Cooler: 1

Pets

Pets Allowed: 1

Cooling

Central Air: 1

Waterfront

Oceanfront: 1

Waterview

Ocean View: 1 Open Water View: 1

Floor

Concrete: 1 Tile: 1

Interior Features

Bar: 1 Built-in Cabinets: 1 Elevator: 1 Entrance Foyer: 1 Pantry: 1 Quartz Countertops: 1 Security System: 1 Sky Light(s): 1 Smoke Alarms: 1 Storage: 1 Walk-in Closet(s): 1 Wet Bar: 1

Specialty Rooms

Laundry Room: 1

Building Style

Above Flood: Yes Stories: 3 Stories

Windows/Doors

Impact Rstnce Doors: 1 Impact Rstnce Window: 1

Vehicle Storage

Car(s): 4+ Carport: 1 Open Parking: 1 Off Street Parking: 1

Security

Electric Gate: 1

Construction

Concrete: 1

Land Size

1/4 - 1/2 Acre: 1

Furnished

Unfurnished: 1

Utilities

Buyer to Verify: 1 Elect Separate Meter: 1 FKAA: 1 Whole House Generatr: 1

Porch/Balcony

Open Porch/Balcony: 1 Roof Top Deck: 1

Exterior Features

Bar: 1 Built-in Grill: 1 Chickee Hut: 1 Fencing: 1 Gazebo: 1 Hot Tub: 1 Lighting: 1 Outdoor Kitchen: 1 Privacy Wall/Fence: 1 Sandy Beach: 1 Storage: 1

Pool Info

In Ground: 1 Concrete: 1 Dimensions: 15 x 35

Roof

Concrete Roof: 1

Status Change Info

Status: Active

Property Features

Fee Includes: None Tax Exemptions: None Waterfront: Oceanfront Waterview: Ocean View; Open Water View Dockage: Basin; Boat Lift; Boat Slip Vehicle Storage: Carport; Off Street Parking; Open Parking Furnished: Unfurnished Cooling: Central Air Utilities: Buyer to Verify; Elect Separate Meter; FKAA; Whole House Generatr Interior Features: Bar; Built-in Cabinets; Elevator; Entrance Foyer; Pantry; Quartz Countertops; Security System; Sky Light(s); Smoke Alarms; Storage; Walk-in Closet(s); Wet Bar Specialty Rooms: Laundry Room Appliances: Dishwasher; Dryer; Freezer; Gas Appliances; Ice Machine; Microwave; Oven; Range; Refrigerator; Stainless Steel Appliance(s); Washer; Wine Cooler Exterior Features: Bar; Built-in Grill; Chickee Hut; Fencing; Gazebo; Hot Tub; Lighting; Outdoor Kitchen; Privacy Wall/Fence; Sandy Beach; Storage Pool Info: In Ground; Concrete Construction: Concrete Floor: Concrete; Tile Roof: Concrete Roof Pets: Pets Allowed Security: Electric Gate Land Size: 1/4 - 1/2 Acre
Listing Office: Berkshire Hathaway HomeServices Keys Real Estate - Islamorada
Last Updated: June - 25 - 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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