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31449 Avenue I, Big Pine Key, FL 33043

$4,850,000
Property Type: Residential Bedrooms: 5 Baths: 4 Square Footage: 3,500 Lot Size (sq. ft.): 7,800 Status: Active
Current Price: $4,850,000 List Date: 11/18/2025 Last Modified: 10/30/2026

Description

Waterfront views of mesmerizing sunrises and moonrises. Imagine having your own private dock on the canal, with vessel access to the Gulf and Atlantic Ocean. Fishermen, bridge clearance is 11 ft. Dolphinus del Sol is a luxury waterfront estate! A full video walkthrough is available on video platform. Use property address to view. Sit back and enjoy a voice-activated, smart home. This new construction, solid precast concrete home, features vaulted ceilings, sleek contemporary lines, and expansive windows showcasing panoramic water views. View distant islands, bridges, boats cruising by, sea life. Entertain in style with the upper level, grand open living room and kitchen area featuring soaring ceilings and walls of glass, with 8 ft opening to the deck. The sleek contemporary kitchen has black stainless steel smart appliances and black, dazzling mirror-fleck countertops. A mirror door reveals a sliding appliance tray from the pantry. In the master bedroom relax on the settee sipping coffee topped with crème de la crème views and a tropical breeze. The en-suite master bath is an expansive oasis. Chill out in the jetted, heated tub, soaking in the views. Elevated ceilings, a 5'x5' shower and floating double vanity offer room to breathe. Adjacent is the walk-in closet. The lower living level great room features a large theater/entertainment area with sweeping waterfront views. Stained floors throughout mimic flowing marbled stone. This 3500 sq ft, 5 bedroom, 4 bath home has outdoor space on two upper decks and a 500 sq ft ground-level patio featuring sea life art. Park up to 6 vehicles under the house or utilize the locking garage. The 2300 sq ft waterfront area has ample space to add amenities. The construction exceeds 180 mph hurricane code. This is a solid, precast concrete panel construction: walls, floors, roof and stairs. The poured concrete pilings go 9 ft below grade, 5 ft into caprock, connected with a 20 in deep grade beam. Tour this amazing fortress!

More Information MLS# 617356

Contract Information

Current Price: $4,850,000 Listing Date: 2025-11-13 Listing Board: Key West Association List Price: $4,850,000

Location Tax Legal

Street #: 31449 Street Name: Avenue I Key/Island: Big Pine Key State/Province: FL Zip Code: 33043 County: Monroe Subdivision: Sands Sub (31.0) Area: 11 - Big Pine Key, No Name Key

General Property Description

Realtor.COM Type: Residential - Single Family Style: Single Family Waterfront: Yes Control Depth: 6 Pool: No Year Built: 2025 Lot SqFt: 7800 Lot Sqft Source: Unknown Acres: 0.18 Living Apx SqFt: 3500 SqFt Source: LA Measured Total Bedrooms: 5 Full Baths: 4 Total Baths: 4 Rentals Allowed: With Restrictions Min Rental Days: 28

Status Change Info

Status: Active

Association Info

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

Building Style

Above Flood: Unknown Stories: 3 Stories

Property Features

Fee Includes: None Tax Exemptions: None Waterfront: Gulf Front Waterview: Canal View; Ocean View Dockage: Other Dockage Building Style: Other Bldg Style Furnished: Partially Cooling: Ceiling Fans(s); Central Air Heating: Central; Electric Utilities: Other - See Remarks Interior Features: Cathedral Ceilings; Walk-in Closet(s); Other Appliances: Dishwasher; Dryer; Ice Machine; Microwave; Range; Refrigerator; Washer Exterior Features: Storage Construction: Other Floor: Concrete Roof: Concrete Roof Pets: Pets Allowed Security: Other Land Size: Less Than 1/4 Acre Terms: Cash; Conventional; FHA; VA

Room Information

Kitchen Length: 10.00 Level: Third Length: 10.00 Width: 18.00 Width: 18.00 Living Room Length: 18.00 Level: Third Length: 18.00 Width: 20.00 Width: 20.00 Bedroom 1 Length: 14.00 Level: Third Length: 14.00 Width: 21.00 Width: 21.00 Bedroom 1 Length: 11.00 Level: Second Length: 11.00 Width: 17.00 Width: 17.00 Bedroom 2 Length: 13.00 Level: Second Length: 13.00 Width: 21.00 Width: 21.00 Bedroom 3 Length: 15.00 Level: Third Length: 15.00 Width: 13.00 Width: 13.00 Bedroom 4 Length: 15.00 Level: Second Length: 15.00 Width: 13.00 Width: 13.00 Other Room Level: Second Remarks: great room
Listing Office: Flat Fee MLS Realty
Last Updated: October - 30 - 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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