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$12,500,000

  • For Sale
  • Active
  • Single Family
  • 7 Beds
  • 7 Full Baths
  • 2 Partial Baths
  • 6,585 Sq. Ft.

Next open house:

Open House: 2:00 PM - 4:00 PM

Saturday 1/17 2:00 PM - 4:00 PM

16 Seaside Avenue,Key Largo, FL 33037

16 Seaside AvenueKey LargoFL33037

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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

Full Property Details for 16 Seaside Ave

General

  • Price: $12,500,000
  • Taxes: $11,156 (2024)
  • Status: Active
  • Type: Single Family
  • Source: 927
  • MLS ID: 617061
  • Updated: 12/16/2025
  • Added to Site: 79 day(s) ago

Interior

  • Rooms/Areas: Laundry Room, Workshop, Utility Room, Theater Room, Media Room
  • Interior Features: Drapes/Blinds Incl, Built-in Cabinets, Brazilian Quartzite Countertops, Quartz Countertops, Tray Ceilings, Bar, Walk-in Closet(s), Storage, Smoke Alarms, Sky Light(s), Security System, Elevator, Entrance Foyer, Pantry, Split Bedroom, Cathedral Ceilings, Wet Bar
  • Appliances: Washer, Stainless Steel Appliance(s), Wine Cooler, Disposal, Microwave, Oven, Range, Refrigerator, Dishwasher, Dryer
  • Furnishings: Unfurnished
  • Flooring: Tile, Wood

Rooms

Bathrooms

  • Total Bathrooms: 9
  • Full Bathrooms: 7
  • Half Bathrooms: 2

Bedrooms

  • Total Bedrooms: 7

Additional Information

  • Shared Amenities: Other Area Features, Bike Paths
  • Pool: Yes
  • Pool Description: In Ground, Concrete, Salt Water
  • Security/Safety: No Security

Exterior

  • Exterior Features: Bar, Water Display, Storage, Sprinkler System, Sandy Beach, Privacy Wall/Fence, Outdoor Kitchen, Lanai, Hot Tub, Gazebo, Fencing, Chickee Hut, Built-in Grill
  • Deck/Patio: Open Porch/Balcony, Deck, Patio, Roof Top Deck

Parking

  • Carports: Yes
  • Parking: Carport, Covered Parking, RV Parking Open, Off Street Parking, Guest Parking, Open Parking

Location

  • Area: 26 - Key Largo S of MM 96.9
  • County: Monroe
  • Subdivision: Seaside Sub (94.5)
  • Driving Directions: Take Ocean to Seaside Avenue Mile Marker 95 ocean side

Community

  • Assoc. Fees Include: None
  • Pets Allowed: Yes

Heating & Cooling

  • Cooling Type: Central Air, Ceiling Fans(s)
  • Heating Type: Central, Zoned, Hot Water, Forced Air

Utilities

  • Water: Ocean View, Open Water View
  • Utility Description: FKAA, Cable Available, Buyer to Verify, Municipal Sewer, Community Swr Plant

Structural Information

  • Architectural Style: Single Family
  • Construction Status: New Construction
  • Construction: CBS, Concrete
  • Roof: Concrete Roof
  • Windows/Doors: Impact Rstnce Window, Impact Rstnce Doors
  • Sprinklers: Yes
  • Wiring: Cable, Surround Sound
  • Disability Access: Yes
  • Stories/Levels: 3 Stories
  • Square Feet: 6,585
  • Sq. Ft. Source: Appraisal
  • Year Built: 2025
  • Property Condition: New Construction

Lot Features

  • Lot Size (Sq. Ft.): 21,250
  • Lot Dimensions: 425' deep x 50' wide
  • Fence: Yes
  • Zoning: SC - Sub Urban Commercial District

Water Features

  • Water Front: Yes
  • Water View: Yes
  • Water Front Type: Oceanfront, Open Water
  • Boat Dock Slip: Yes
  • Dock Description: Dock Privileges, Basin, Boat Slip, Boat Lift

Financial Considerations

  • Tax Amount: $11,156
  • Tax Year: 2024
  • Terms: No Seller Finance, Cash, Conventional

Disclosures and Reports

  • Legal Description: 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
  • Flood Zone: AE, AE, AE
  • Rentals Allowed: Yes
  • APN: 00492240-000000

Listed by Ocean Sotheby's International Realty, Walters Luxury Group Gloria, Rachel and Michaela Walters (305) 942-6834

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Listing agent

— 16 Seaside Ave —

  • Walters Luxury Group Gloria, Rachel and Michaela Walters

    Ocean Sotheby's International Realty

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 16 Seaside Ave

School District:Monroe County School District, Middle Torch Key, FL
NameGradesDistance
Key Largo School
104801 Overseas Highway, Key Largo, FL 33037
PK-810.1 mi
Key West High School
2100 Flagler Avenue, Key West, FL 33040
9-1287.4 mi
Disclaimer: School attendance boundaries provided by Pitney Bowes and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 16 Seaside Ave Get Price Alerts and Save Property

Date
Details
Price
Change
Source
10/28/2025
Listed
$12,500,000
733.33%
MLS
2/11/2022
Sold
$1,500,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 16 Seaside Ave

Year
Property Taxes
Change
Tax Assessment
Change
2024
$11,156
—
$884,023
-28%
2024
$11,156
-31%
$1,222,352
-33%
2023
$16,109
139%
$1,812,842
176%
2021
$6,743
-40%
$657,861
-46%
2022
$11,167
66%
$1,225,564
793%
2021
$6,743
318%
$137,186
2%
2019
$1,612
—
$134,102
2%
2018
$1,610
2%
$131,602
2%
2017
$1,574
—
$128,896
2%
2016
$1,581
-3%
$126,245
1%
2015
$1,626
-3%
$125,367
1%
2014
$1,676
-1%
$124,372
1%
2013
$1,697
—
$122,534
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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NMLS#: 1598647

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Listed by Ocean Sotheby's International Realty, Walters Luxury Group Gloria, Rachel and Michaela Walters (305) 942-6834

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16 Seaside Avenue, Key Largo, FL 33037 (MLS# 617061) is a Single Family property with 7 bedrooms, 7 full bathrooms and 2 partial bathrooms. 16 Seaside Avenue is currently listed for $12,500,000 and was received on October 28, 2025. Want to learn more about 16 Seaside Avenue? Do you have questions about finding other Single Family real estate for sale in Key Largo? You can browse all Key Largo real estate or contact a Coldwell Banker agent to request more information.

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