16 Seaside Avenue, Key Largo, FL 33037

$12,500,000
Property Type: Residential Bedrooms: 7 Baths: 9 Square Footage: 6,585 Lot Size (sq. ft.): 21,250 Status: Active
Current Price: $12,500,000 List Date: 10/28/2025 Last Modified: 2/15/2026

Description

Welcome to 16 Seaside, an extraordinary oceanfront estate showcasing the perfect balance of modern design, functionality, and refined coastal living. This newly constructed residence is situated on a protected private basin offering the rare, secure deep-water dockage with a sandy peninsula. The private basin provides parking for up to six vessels, each equipped with shore power and water, making it a boater's dream. Spanning 6,585 square feet under air, the home features seven bedrooms, seven en-suite baths, and two half baths, including dual primary suites designed for multi-generational living or guest privacy. The interior exudes modern luxury with a custom chef's kitchen, climate-controlled wine cellar, multi-level elevator, four-zone AC system, and comprehensive smart-home automation managing lighting, audio, climate, pool, and security. Every detail was curated for seamless living and entertaining, from the expansive third-floor entertainment suite overlooking the ocean to the open-concept living spaces lined with glass doors and terraces capturing panoramic views. Outdoors, enjoy a resort-style pool and spa, covered summer kitchen, and a tiki hut on your private sandy beach framed by lush landscaping and privacy fencing. Seven balconies provide stunning vantage points, while an automatic entry gate and approximately 2,500 square feet of covered parking offer security and convenience. Built to last with reinforced, poured concrete construction, impact glass, and a whole-home generator, this residence combines elegance with durability. Set on a .48-acre double lot with flexible suburban/commercial zoning ideal for events and vacation rentals, 16 Seaside delivers unmatched versatility and long-term value. Located just one hour from Miami, this exceptional Key Largo waterfront estate embodies the essence of a Florida Keys lifestyle, where oceanfront serenity, modern craftsmanship, and world-class boating converge in one remarkable private estate sized property

More Information MLS# 617061

Contract Information

Current Price: $12,500,000 Listing Date: 2025-10-28 Listing Board: Florida Keys List Price: $12,500,000 As is Rght to Inspct: Yes Potential Short Sale: No Bank Owned: No Species List: No

Location Tax Legal

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 Style: Single Family Waterfront: Yes Control Depth: 4 Pool: Yes Year Built: 2025 Lot Size: 425' deep X 50' wide Lot SqFt: 21250 Lot Sqft Source: Tax Records Acres: 0.48 Living Apx SqFt: 6585 SqFt Source: Appraisal Total Bedrooms: 7 Full Baths: 7 Half Baths: 2 Total Baths: 9 Rentals Allowed: Yes

Status Change Info

Status: Active

Association Info

Mandatory Home Owners Asc: No 1st Right of Refusal: No

Dockage

Dock: Concrete Seawall: Concrete

Building Style

Above Flood: Yes Stories: 3 Stories

Pool Info

Heated: No

Financial Status

Auction: No Bank Owned: No Potential Short Sale: No Standard Sale: Yes

Property Features

Fee Includes: None Tax Exemptions: None Waterfront: Oceanfront; Open Water Waterview: Ocean View; Open Water View Dockage: Basin; Boat Lift; Boat Slip; Dock Privileges Property Condition: New Construction Vehicle Storage: Carport; Covered Parking; Guest Parking; Off Street Parking; Open Parking; RV Parking Open Furnished: Unfurnished Cooling: Ceiling Fans(s); Central Air Heating: Central; Forced Air; Hot Water; Zoned Utilities: Buyer to Verify; Cable Available; Community Swr Plant; FKAA; Municipal Sewer Interior Features: Bar; Brazilian Quartzite Countertops; Built-in Cabinets; Cathedral Ceilings; Drapes/Blinds Incl; Elevator; Entrance Foyer; Pantry; Quartz Countertops; Security System; Sky Light(s); Smoke Alarms; Split Bedroom; Storage; Tray Ceilings; Walk-in Closet(s); Wet Bar Pre-Wired: Cable; Surround Sound Specialty Rooms: Laundry Room; Media Room; Theater Room; Utility Room; Workshop Appliances: Dishwasher; Disposal; Dryer; Microwave; Oven; Range; Refrigerator; Stainless Steel Appliance(s); Washer; Wine Cooler Exterior Features: Bar; Built-in Grill; Chickee Hut; Fencing; Gazebo; Hot Tub; Lanai; Outdoor Kitchen; Privacy Wall/Fence; Sandy Beach; Sprinkler System; Storage; Water Display Accessibility Feat: Accessible Elevator Installed; Parking Pool Info: In Ground; Salt Water; Concrete Construction: CBS; Concrete Floor: Tile; Wood Roof: Concrete Roof Pets: Pets Allowed Neighborhood Feature: Bike Paths; Other Area Features Security: No Security Land Size: 1/4 - 1/2 Acre Terms: Cash; Conventional; No Seller Finance Title: Title Ins - Buyer GF-Interior Features: Dual Flush; LED Lighting; Tankless Hot Wtr Htr

Documents

Listing Office: Ocean Sotheby's International Realty
Last Updated: February - 15 - 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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