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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

Overview

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 ...

Listing Details MLS# 620408

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
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

Contract Information

Listing Board
Florida Keys
As is Rght to Inspct
Yes
Species List
No

General Property Description

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

Association Info

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

Dockage

Dock Length
220
Dock
Concrete
Basin
Yes
Boat Lift
Yes
Boat Slip
Yes

More Information

Building Style

Above Flood
Yes
Stories
3 Stories

Vehicle Storage

Car(s)
4+
Carport
Yes
Open Parking
Yes
Off Street Parking
Yes

Pool Info

Dimensions
15 x 35
In Ground
Yes
Concrete
Yes

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!

Fee Includes

None
Yes

Tax Exemptions

None
Yes

Appliances

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

Pets

Pets Allowed
Yes

Cooling

Central Air
Yes

Waterfront

Oceanfront
Yes

Waterview

Ocean View
Yes
Open Water View
Yes

Floor

Concrete
Yes
Tile
Yes

Interior Features

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

Specialty Rooms

Laundry Room
Yes

Windows/Doors

Impact Rstnce Doors
Yes
Impact Rstnce Window
Yes

Security

Electric Gate
Yes

Construction

Concrete
Yes

Land Size

1/4 - 1/2 Acre
Yes

Furnished

Unfurnished
Yes

Utilities

Buyer to Verify
Yes
Elect Separate Meter
Yes
FKAA
Yes
Whole House Generatr
Yes

Porch/Balcony

Open Porch/Balcony
Yes
Roof Top Deck
Yes

Exterior Features

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

Roof

Concrete Roof
Yes

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.