About This Home

This 5-bedroom, 4-bathroom single family at 31449 Avenue I in Big Pine Key, FL is listed for $4,850,000 ($1,386 per sqft). Built in 2025, the home offers 3,500 sqft of living space on a 0.18 acres lot.

Key Features

  • Built in 2025
  • 0.18 acre lot
  • Waterfront

Property Details

4 full
2025

Amenities

WaterfrontViewA/C
Listing 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 creme de la creme 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!

Monthly Cost Estimate

$25,939/mo

20% down · 6.5% · 30 years

Principal$3,508
Interest$21,017
Insurance$1,415

Estimates only. Actual payments may vary.

Location

31449 Avenue I

Big Pine Key, FL 33043

Sands Sub (31.0)

Features & Amenities

Interior Features

Cathedral CeilingsWalk-in Closet(s)

Exterior Features

Storage

Property Details

Flooring

Concrete

Views

Ocean

Outdoor Features

PatioPorch

Heating

CentralElectric (Heating)

Cooling

Central Air

Appliances

WasherDryerDishwasherRefrigeratorRangeMicrowaveIce Machine

Questions & Answers

This 5-bedroom, 4-bathroom single family at 31449 Avenue I is listed at $4,850,000 ($1,386/sqft). The estimated monthly payment is $25,939 based on 20% down, a 30-year loan at 6.5% interest, estimated insurance.

Key features include: Built in 2025, 0.18 acre lot, Waterfront. Interior Features: Cathedral Ceilings, Walk-in Closet(s). Exterior Features: Storage.

This property is listed by Stephen Hachey.

SH

Stephen Hachey

Agent at Flat Fee MLS Realty

Listed by Flat Fee MLS Realty · Broker phone: (813) 642-6030 · View on Broker Site

MLS# 617356· Source: Key West Association of Realtors· 353 days on PropertySimple

Copyright © 2026 Key West Association of Realtors. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

31449 Avenue I, Big Pine Key, FL 33043

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