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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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+20

510 HARBOR GATE WAY

LONGBOAT KEY, FL, 34228

Active

$4,395,000

510 HARBOR GATE WAY

LONGBOAT KEY, FL, 34228

Active

$4,395,000

4

Bedrooms

6

Bathrooms

5,080 sqft

Living Area

1996

Year Built

$4,395,000Tour 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.

19,127

Lot Size (sqft)

$2,500

HOA / Annually

245

Days on Market

Dock Score™

DockOnly
72
Good

What shaped this score

✓Canal
✓Dock with boat lift
✓Bridge-free to bay & ocean
✓Fits boats up to ~34ft (est.)

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

Dock & Water AccessMLS

Canal Front📝 12K-lb boat lift

AI Aerial Imagery Detection

Dock DetectedBoat Lift DetectedSeawall DetectedDeep Water Indicators~29-39 ft dock

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.

Navigation RouteDockOnly

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

Description

A Waterfront Work of Art. Experience a one-of-a-kind waterfront residence on Longboat Key — now offered at an exceptional new value. Designed around three interconnected circular "pods," the residence flows like a choreographed dance. There are no awkward hallways, no wasted corners, no spaces that feel like afterthoughts. Curved walls carry throughout every room — even into the garage — creating a cohesive design statement that's genuinely rare in residential construction at any price point. This architectural masterpiece is a sculptural composition of flowing living spaces connected by custom corridors, delivering remarkable privacy, abundant natural light, and seamless indoor–outdoor living. The dramatic Great Room pod showcases soaring wood-paneled ceilings and expansive walls of glass that frame tranquil water views. The circular primary suite is a private retreat featuring a spa-inspired bath with dual showers, a lounge area, private office, and direct access to the pool and spa terrace. At the heart of the home, the striking circular kitchen is both artful and functional, centered around a curved island beneath a two-story ceiling and skylight, with a thoughtfully designed radial appliance layout. Two en-suite guest bedrooms open to private patios, while the fully self-contained Secondary Primary Suite above the impressive 32' x 23' three-car garage offers independent HVAC, a luxury bath with steam shower and sauna, and flexible living space ideal for extended guests or multigenerational living. Outdoors, the property embraces the waterfront lifestyle with protected deep sailboat water, a private dock with a 12,000-pound lift, and a resort-style pool and spa designed for entertaining and relaxation. Located behind the 24-hour guarded gates of Bay Isles, residents also enjoy exclusive access to the Bay Isles Beach Club on the Gulf of Mexico.

Schedule a Showing

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

Select a date

Location

LONGBOAT KEY, FL, 34228

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 MICHAEL SAUNDERS & COMPANY via Stellar MLS

Last updated: 7/14/2026

© 2026 Stellar MLS. All rights reserved. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange (IDX) program of Stellar MLS. Information is deemed reliable but not guaranteed and should be independently verified. 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
72
Good

What shaped this score

✓Canal
✓Dock with boat lift
✓Bridge-free to bay & ocean
✓Fits boats up to ~34ft (est.)

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

FEMA Flood Zone AE
BFE: 7ft

Special Flood Hazard Area

View FEMA Flood Map →
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Mortgage Calculator

Estimate your monthly payment for this waterfront property

20%

$879,000 down

%
Principal & Interest$22,805/mo
Property Tax (est. ~1.2%, varies by county)$4,395/mo
Home Insurance (est.)$250/mo
HOA Fees$208/mo
Total Monthly Payment$27,658
Loan Amount: $3,516,000Rate: 6.75%
Get Pre-Qualified

Estimated payments only. Actual rates and terms may vary.

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