16 Seaside Avenue, Key Largo, FL 33037

$12,500,000

Virtual Tour

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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

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

Location, Tax & Legal

City: KEY LARGO Off Shore Island: No Mile Marker: 94.5 Marathon Neighborhood: N/A Side: Ocean Flood Zone: AE,AE,AE Alternate Key #: 1608459 Handicap Access: Yes Parcel #: 00492240-000000 Zoning: SC - Sub Urban Commercial District Deed Restrictions: Unknown 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: 11156.25 Tax Year: 2024 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: 4 Lot Size: 425' deep X 50' wide Lot SqFt: 21250 Pool: Yes Lot Sqft Source: Tax Records Total Units: 0 Acres: 0.48 SqFt Source: Appraisal Rentals Allowed: Yes 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: 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 Directions: Take Ocean to Seaside Avenue Mile Marker 95 ocean side

Association Info

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

Fee Includes

None: 1

Dockage

Dock: Concrete Basin: 1 Boat Lift: 1 Boat Slip: 1 Dock Privileges: 1 Seawall: Concrete

Tax Exemptions

None: 1

Appliances

Dishwasher: 1 Disposal: 1 Dryer: 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 Central Air: 1

Heating

Central: 1 Forced Air: 1 Hot Water: 1 Zoned: 1

Waterfront

Oceanfront: 1 Open Water: 1

Waterview

Ocean View: 1 Open Water View: 1

Floor

Tile: 1 Wood: 1

Neighborhood Feature

Bike Paths: 1 Other Area Features: 1

Interior Features

Bar: 1 Brazilian Quartzite Countertops: 1 Built-in Cabinets: 1 Cathedral Ceilings: 1 Drapes/Blinds Incl: 1 Elevator: 1 Entrance Foyer: 1 Pantry: 1 Quartz Countertops: 1 Security System: 1 Sky Light(s): 1 Smoke Alarms: 1 Split Bedroom: 1 Storage: 1 Tray Ceilings: 1 Walk-in Closet(s): 1 Wet Bar: 1

Property Condition

New Construction: 1

Specialty Rooms

Laundry Room: 1 Media Room: 1 Theater Room: 1 Utility Room: 1 Workshop: 1

Building Style

Above Flood: Yes Stories: 3 Stories

Windows/Doors

Impact Rstnce Doors: 1 Impact Rstnce Window: 1

Vehicle Storage

Carport: 1 Covered Parking: 1 Guest Parking: 1 Open Parking: 1 RV Parking Open: 1 Off Street Parking: 1

Security

No Security: 1

Construction

CBS: 1 Concrete: 1

Land Size

1/4 - 1/2 Acre: 1

Furnished

Unfurnished: 1

Terms

Cash: 1 Conventional: 1 No Seller Finance: 1

Utilities

Buyer to Verify: 1 Cable Available: 1 Community Swr Plant: 1 FKAA: 1 Municipal Sewer: 1

Porch/Balcony

Deck: 1 Open Porch/Balcony: 1 Patio: 1 Roof Top Deck: 1

Title

Title Ins - Buyer: 1

Exterior Features

Bar: 1 Built-in Grill: 1 Chickee Hut: 1 Fencing: 1 Gazebo: 1 Hot Tub: 1 Lanai: 1 Outdoor Kitchen: 1 Privacy Wall/Fence: 1 Sandy Beach: 1 Sprinkler System: 1 Storage: 1 Water Display: 1

Pool Info

In Ground: 1 Salt Water: 1 Heated: No Concrete: 1

Pre-Wired

Cable: 1 Surround Sound: 1

Roof

Concrete Roof: 1

Financial Status

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

Accessibility Feat

Accessible Elevator Installed: 1 Parking: 1

GF-Interior Features

Dual Flush: 1 LED Lighting: 1 Tankless Hot Wtr Htr: 1

Status Change Info

Status: Active

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

SC zoning information ›

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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