Back to Search
640 4TH KEY Drive photo 1
640 4TH KEY Drive photo 2
640 4TH KEY Drive photo 3
640 4TH KEY Drive photo 4
640 4TH KEY Drive photo 5
640 4TH KEY Drive photo 6
640 4TH KEY Drive photo 7
640 4TH KEY Drive photo 8
640 4TH KEY Drive photo 9
640 4TH KEY Drive photo 10
640 4TH KEY Drive photo 11
640 4TH KEY Drive photo 12
1 / 12

640 4TH KEY Drive

Fort Lauderdale, FL, 33304

Active

$18,900,000

0

Bedrooms

0

Bathrooms

6,974 sqft

Living Area

2028

Year Built

26,301

Lot Size (sqft)

3

Days on Market

Dock Score™

DockOnly
67
Good

What shaped this score

Ocean Access
Dock present
Fits boats up to ~100ft+ (est.)
Premium waterfront location

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

Dock & Water AccessMLS

Ocean AccessPoint LotRiverSeawall

AI Aerial Imagery Detection

Dock DetectedSeawall Detected

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 161 ft

Easy
handling

161215 ft

Fits
with care

215248 ft

Tight
(back-in)

Boats over 248 ft typically back in/out rather than turning here. Clear channel ≈ 323 ft with boats moored both sides (~13 ft per side for dock + beam). 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

Extraordinary opportunity to create landmark waterfront estate on Sunrise Key, Ft Lauderdale's coveted guard-gated, all-waterfront community. Expansive trophy point offers 350 feet of waterfrontage, prime dockage for 50-meter yacht, & additional dockage for 2 yachts up to 100 feet. Architectural plans included for spectacular 15,000 sf, 3-story home designed for ultimate South Florida luxury lifestyle. Property features new seawall & dock, 12' of water depth at low tide, protected no-wake location, & rare three-phase electrical power for supporting shore-power requirements of larger yachts. Swift ocean access & exceptional location minutes from Las Olas Blvd, fine dining, upscale shopping, private aviation, highly regarded schools. An irreplaceable offering for discerning yachtsman.

Schedule a Showing

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

Select a date

Location

Fort Lauderdale, FL, 33304

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 Fidelity Real Estate LLC via MIAMI REALTORS®

Last checked: 14 hours ago

Listing updated: September 8, 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.

FEMA Flood Zone AE
BFE: 7ft

Special Flood Hazard Area

View FEMA Flood Map →
Loading nearby marinas…
Loading nearby sandbars…

Mortgage Calculator

Estimate your monthly payment for this waterfront property

20%

$3,780,000 down

%
Principal & Interest$98,068/mo
Property Tax (est. ~1.2%, varies by county)$18,900/mo
Home Insurance (est.)$250/mo
Total Monthly Payment$117,218
Loan Amount: $15,120,000Rate: 6.75%
Get Pre-Qualified

Estimated payments only. Actual rates and terms may vary.

$18,900,000Tour 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.