OPEN TODAY

For sale

$19,450,000

Est. $138,648/mo —

•

6,497

sq ft

550 Harbor Dr, Key Biscayne, FL 33149

About this home

Enjoy Paradise Found on the exclusive island of Key Biscayne This extraordinary 7,000sqft waterfront estate sits on a rare double lot located on Hurricane Harbor overlooking tranquil Manatee Lagoon. The property offers an unparalleled sanctuary of luxury and seclusion with features including a 4 car garage ideal for collectors, professionally landscaped yard well suited for outdoor entertaining, 7 bedrooms and 7.5 baths including live-in staff quarters. Expansive living areas flow seamlessly to large outdoor, covered porches becoming your al fresco living room for outdoor dining or relaxing and soaking in the beauty of the natural environment as dolphins and manatees swim in your backyard. As the sun hits the horizon, the afterset lights up the sky illuminating the clouds in a breathtaking array of tropical colors. Text listing agent. 24hr notice

Single-familyProperty Type

2003Year Built

0.31 acresLot Size

$2,994Price/Sq.Ft.

4 car garageParking

Listed by William Earle • Three Bridges Realty, LLC

•305-345-2023 (agent)

•willearlybird@aol.com (agent)

•305-345-2023 (broker)

•threebridgesrealty@gmail.com (broker)

Listing updated: Oct 23, 2026 at 04:01pm

Redfin checked: 3 minutes ago

•Source:MARMLS #A12111835

Payment calculator

$138,648 per month

Principal and interest$106,147

Property taxes

$9,810

HOA dues

Home insurance

$22,692

Utilities

Add

5 minutes to get started. No credit impact.

Affordability tools

See this home in person

This home is unavailable to tour on this day.

Next available date: Saturday, October 24

Open houses

Saturday, Oct 24

Nearby open houses (10)

OPEN TODAY, 11AM TO 2PM
$1,295,000
4 beds2.5 baths2,183 sq ft
8601 SW 82nd Ter, Miami, FL 33143
(305) 297-3557
OPEN TODAY, 11AM TO 2PM
$8,495,000
6 beds7 baths5,392 sq ft
4253 Ingraham Hwy, Miami, FL 33133
(305) 315-2396
OPEN TODAY, 12PM TO 3PM3D WALKTHROUGH
$6,250,000
4 beds3.5 baths3,349 sq ft
1080 San Pedro Ave, Coral Gables, FL 33156
OPEN TODAY, 1PM TO 3PM
$1,725,000
4 beds3 baths2,712 sq ft
7901 SW 97th St, Miami, FL 33156
(305) 253-2800
OPEN TODAY, 2:30PM TO 4:30PM
$2,675,000
3 beds4 baths2,776 sq ft
5765 SW 47th St, Miami, FL 33155
(305) 667-4815
OPEN TODAY, 3PM TO 5PM
$1,050,000
3 beds2.5 baths1,400 sq ft
261 Navarre Ave Unit A-3, Coral Gables, FL 33134
(305) 960-2400
OPEN TODAY, 3PM TO 5PM
$1,275,000
4 beds3 baths2,101 sq ft
15922 SW 83rd Ct, Palmetto Bay, FL 33157
(305) 667-4815
OPEN SUN, 11AM TO 1PM
$5,495,000
5 beds6.5 baths— sq ft
9445 SW 73rd Ave, Pinecrest, FL 33156
(305) 695-6060
OPEN SUN, 2PM TO 4PM
$565,000
2 beds2 baths970 sq ft
1551 Lenox Ave #6, Miami Beach, FL 33139
(305) 851-2820
OPEN SUN, 3PM TO 5PM
$1,300,000
5 beds4 baths4,717 sq ft
19363 SW 79th Ave, Cutler Bay, FL 33157
(305) 974-1801

Around this home

Schools

K - 12
Preschool & daycare

Key Biscayne K-8 Center

Public PreK-8 • Assigned • 0.4mi

8/10

Coral Gables Senior High School

Public PreK-12 • Assigned • 6.3mi

5/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Market insights

550 Harbor Dr · $19,450,000

DAYS ON MARKET

The average home goes pending in 74 days.

SALE-TO-LIST

Most homes are selling 4% below list price.

LIST PRICE

Median sale price in this area is $678,597. (97% lower than this home)

PRICE DROP

17% of homes in this area have had a price drop in the past month.

Property details

Interior
Exterior
Finance

Interior features
Elevator
In-law suite

Bedrooms
Bedroom on the main level

Bathrooms
7 full bathrooms
1 half bathroom

Kitchen
Dishwasher, disposal, microwave, refrigerator

Laundry & utility
Washer and dryer

Flooring
Marble flooring

Heating & cooling
Central electric heating
Central air conditioning

Sale and tax history for 550 Harbor Dr

Sale History
Tax History

Year

Property tax

Land + Additions

Assessment*

2025

$117,717 (+11.6%)

2024

$105,472 (+6.7%)

2023

$98,891 (+21.0%)

2022

$81,707 (+6.8%)

2021

$76,527 (−8.4%)

2020

$83,550 (+7.7%)

$3,192,480 + $1,392,045

$4,584,525

2019

$77,562 (+3.0%)

$3,258,990 + $1,425,574

$4,684,564

2018

$75,320 (−24.1%)

$3,258,990 + $1,442,338

$4,701,328

2017

$99,230 (−1.2%)

$3,258,990 + $1,442,338

$4,701,328

2016

$100,427 (+6.4%)

2015

$94,349 (+2.9%)

2014

$91,660 (+18.0%)

2013

$77,706 (+7.4%)

2012

$72,361 (+11.1%)

$2,793,420 + $1,465,343

$4,258,763

2011

$65,141

Public record

Public record
Zoning
Permits

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

0.31 Acres

Year renovated

2003

Finished Sq. Ft.

6,497

Unfinished Sq. Ft.

—

Total Sq. Ft.

6,497

Year built

2003

Style

Single Family Residential

County

Miami-Dade County

APN

2452050070020

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Oct 14, 2026.

Aug 14, 2020 • Final

Sub-permit building

Install exterior and interior railings according to shop drawings.

Remodel

Aug 14, 2020 • Final

Master building

Construct a new single-family home.

New construction

Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.

Climate risks

10/10 Flood Factor

Estimated 80%+ chance of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

Heat Factor

We're working on getting current and accurate heat risk information for this home.

10/10 Wind Factor

99% chance of strong winds in next 30 years

2/10 Air Factor

1 unhealthy days expected this year, 1 days in 30 years

Provided by First Street

Historical weather

Key Biscayne, FL • 33149

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

92/ 100

Exceptional sunlight

Sunscore

This home ranks in the top 17% for direct sun exposure in Key Biscayne. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.

9.4 hrs

7.4 hrs

JuneDecember

Provided by Shadowmap

Redfin Estimate for 550 Harbor Dr

We cannot show automated home-value estimates for this home.

Nearby homes have recently sold between $6,400,000 and $11,500,000.

Nearby comparable homes

The Redfin Estimate uses 6 recent nearby sales, priced between $6.4M to $11.5M.

SOLD SEP 18, 2026
$8,100,000 Last sold price
4 beds4 baths5,623 sq ft
3530 Bayshore Villas Dr, Miami, FL 33133
$1553/sq ft
smaller lot
14 years older
SOLD OCT 20, 2026
$6,400,000 Last sold price
5 beds5.5 baths3,688 sq ft
445 Ridgewood Rd, Key Biscayne, FL 33149
$1259/sq ft
smaller lot
18 years newer
SOLD JUL 1, 2026
$10,500,000 Last sold price
5 beds5.5 baths5,074 sq ft
110 Reef Ln, Key Biscayne, FL 33149
$925/sq ft
smaller lot
11 years newer
SOLD OCT 9, 2026
$6,925,000 Last sold price
5 beds4 baths4,088 sq ft
3499 N Prospect Dr, Coral Gables, FL 33133
$1300/sq ft
smaller lot
27 years older
SOLD SEP 22, 2026
$11,500,000 Last sold price
6 beds6.5 baths6,522 sq ft
2820 Brickell Ave, Miami, FL 33129
$1231/sq ft
larger lot
4 years older
SOLD JUL 8, 2026
$7,250,000 Last sold price
4 beds4.5 baths3,243 sq ft
2841 Emathla St, Miami, FL 33133
$758/sq ft
larger lot
6 years older

Tour for free, no strings attached

Make a winning offer with the help of a local agent

Ask a question

(305) 901-7699