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© 2026 DockOnly™. All rights reserved.

DockOnly™ and Dock Score™ are trademarks of Blue Mar Real Estate Group Inc.

Blue Mar Real Estate Group Inc., Licensed Florida Real Estate Broker

Blue Mar Real Estate Group Inc.

Licensed Florida Real Estate Broker · DBPR License CQ1018554

4000 Ponce De Leon Blvd, Suite 470, Coral Gables, FL 33146

[email protected]

Listing data is provided by participating Multiple Listing Services and is deemed reliable but not guaranteed. Each listing's MLS source and its required disclosures appear with that listing. Dock Score™ is a DockOnly.com rating and is not provided by or affiliated with any MLS or listing broker. NOAA chart data is public domain and for reference only, not for navigation. Full MLS Compliance

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This website complies with the Fair Housing Act. We do not discriminate on the basis of race, color, religion, sex, national origin, familial status, or disability.

DockOnly™Blue Mar Real Estate Group Inc., Licensed Florida Real Estate BrokerBlue MarREAL ESTATE GROUPBlue Mar Real Estate Group Inc., Licensed Florida Real Estate Broker
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+20

550 Harbor Dr

Key Biscayne, FL, 33149

Active

$19,450,000

550 Harbor Dr

Key Biscayne, FL, 33149

Active

$19,450,000

7

Bedrooms

8

Bathrooms

6,497 sqft

Living Area

2003

Year Built

$19,450,000Tour the dockSchedule a Showing
Navigation note: Navigation routes show the shortest mapped path to open water. A vessel taller than the binding bridge clearance may still reach open water via a longer alternate route that we don't currently map. Verify navigability with a local captain or surveyor before relying on it.

22,975

Lot Size (sqft)

229

Days on Market

Dock Score™

DockOnly
90
Excellent

What shaped this score

✓Ocean Access
✓Dock present
✓No fixed bridges
✓Fits boats up to ~100ft+ (est.)
·Draft not independently verified
Est. waterfront~105 ft

DockOnly.com rating, not provided by the MLS or listing broker.

Dock & Water AccessMLS

Ocean AccessLagoonNavigable WaterNo Fixed Bridges

AI Aerial Imagery Detection

Dock DetectedSeawall DetectedDeep Water Indicators

Detected by AI from open-source aerial mapping imagery and may not reflect current conditions. This information was not provided by the MLS or listing broker. Always verify dock infrastructure with the listing agent.

Canal WidthDockOnly

At the dock

County parcel data
349ft
dock349 ft

Single measurement at the dock · width variation along the canal not yet available

Measured perpendicular from this parcel's waterfront edge to the parcel directly across the canal, using surveyed county GIS boundaries. Multiple waterfront edges detected (corner lot or dual frontage); reported value is the widest; verify with the listing agent.

Will it turn around?

Up to 154 ft

Easy
handling

154–206 ft

Fits
with care

206–237 ft

Tight
(back-in)

Boats over 237 ft can't turn around here. Back in/out only. Clear channel ≈ 309 ft once boats are docked both sides (FL rules cap each side ~20 ft). Wide-beam yachts need the upper end of each range.

Navigation RouteDockOnly

Data sources: SFWMD AHED waterway polygons · FHWA National Bridge Inventory 2024 · Not provided by the MLS or listing broker.

Description

Situated 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 the sun hits the horizon, Sunsets light up the sky illuminating the clouds in a breathtaking array of tropical colors. Text listing agent. 24hr notice

Schedule a Showing

See the property and tour the dock. A licensed waterfront specialist will arrange your private showing.

Select a date

Location

Key Biscayne, FL, 33149

No price history available for this property.

Displayed by Blue Mar Real Estate Group Inc., Licensed Florida Real Estate Broker (DBPR CQ1018554) · [email protected]

Listing courtesy of Three Bridges Realty, LLC via MIAMI REALTORS®

Last updated: 6/28/2026

© 2026 Miami Association of REALTORS®, Inc. All rights reserved. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of the Miami Association of REALTORS®. Information is deemed reliable but not guaranteed. All properties are subject to prior sale, change, or withdrawal.

IDX information is provided exclusively for consumers' personal, non-commercial use. It may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Dock Score™

DockOnly
90
Excellent

What shaped this score

✓Ocean Access
✓Dock present
✓No fixed bridges
✓Fits boats up to ~100ft+ (est.)
·Draft not independently verified
Est. waterfront~105 ft

DockOnly.com rating, not provided by the MLS or listing broker.

FEMA Flood Zone AE
BFE: 10ft

Special Flood Hazard Area

View FEMA Flood Map →
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Mortgage Calculator

Estimate your monthly payment for this waterfront property

20%

$3,890,000 down

%
Principal & Interest$100,922/mo
Property Tax (est. ~1.2%, varies by county)$19,450/mo
Home Insurance (est.)$250/mo
Total Monthly Payment$120,622
Loan Amount: $15,560,000Rate: 6.75%
Get Pre-Qualified

Estimated payments only. Actual rates and terms may vary.

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Nearby Schools

Assigned Public Schools

E

Key Biscayne K-8 Center

Grades PK-8 · Key Biscayne

M

Ponce de Leon MS

Grades 6-8 · Coral Gables

H

Coral Gables Senior High

Grades 9-12 · Coral Gables

Nearby Private Schools

St Agnes Academy0.8 mi
St Christophers - By-The-Sea Montessori School0.8 mi

School data from Miami-Dade County Open Data Hub. Verify attendance zones with the school district.