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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

511 ALAMEDA Court

Marco Island, FL, 34145

Active

$4,500,000

511 ALAMEDA Court

Marco Island, FL, 34145

Active

$4,500,000

4

Bedrooms

4

Bathrooms

5,117 sqft

Living Area

2005

Year Built

27

Days on Market

Dock Score™

DockOnly
83
Excellent

What shaped this score

✓Canal
✓Dock with boat lift
✓Fits boats up to ~100ft+ (est.)
✓Premium waterfront location
Est. waterfront~160 ft

Frontage wraps multiple water edges (end-of-canal or corner lot), so boat fit reflects the usable berth — broker-stated dockage where available, otherwise the canal-end width — not the total frontage.

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

Dock & Water AccessMLS

CanalAccessNavigableWaterRiprapSeawall📝 16K-lb boat lift📝 deep water

AI Aerial Imagery Detection

Dock DetectedBoat Lift 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
125ft
dock125 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 49 ft

Easy
handling

49–66 ft

Fits
with care

66–76 ft

Tight
(back-in)

Boats over 76 ft typically back in/out rather than turning here. Clear channel ≈ 99 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

One or more photo(s) has been virtually staged, AI generated or rendered. Experience the ultimate in resort-style island living in this exceptional waterfront estate, perfectly positioned on an oversized half-acre homesite with 160 feet of frontage along scenic Roberts Bay. Offering quick, deep-water direct Gulf access, this beautifully renovated residence delivers the ideal blend of luxury, privacy, and an effortless boating lifestyle. Completely transformed in 2025, the home showcases elegant coastal architecture with a new concrete tile roof, impact-rated windows and doors, dramatic zero-corner sliders, fresh stucco, paint, gutters, and refined architectural detailing. Inside, the spectacular gourmet kitchen is designed to impress with Cristallo quartzite countertops, premium appliances, custom cabinetry with abundant storage, and an expansive island that seamlessly anchors the home's open-concept living spaces. The adjacent custom wet bar features quartzite surfaces, a copper sink, wine refrigeration, dual GE Monogram refrigerator drawers, and illuminated display cabinetry for effortless entertaining. The luxurious main-level owner's retreat offers tranquil water views, a spacious sitting area, private office, dual walk-in closets, and a spa-inspired bath complete with a freestanding soaking tub, oversized walk-in shower, quartzite vanities, and dual water closets, including one with a smart toilet. Designed to embrace Southwest Florida's indoor-outdoor lifestyle, the panoramic screened lanai creates a true private resort atmosphere. Relax beside the newly renovated PebbleTec pool and spa with glass tile finishes and Aqualink automation, gather around the outdoor kitchen, or unwind in the expansive covered living areas while enjoying breathtaking bay views. The private dock with a 16,000-pound lift provides protected harborage and minutes-to-the-Gulf boating, while new riprap enhances the shoreline and attracts dolphins, manatees, and exceptional fishing right from your backyard. Additional highlights include a new impact-rated garage door, updated lighting and fans, backyard fencing, and ample room to add a detached guest house or three-car garage. A rare opportunity to enjoy luxury waterfront living where every day feels like a vacation, this remarkable Marco Island residence offers the perfect combination of timeless elegance, world-class boating, and the relaxed sophistication of a private island retreat.

Schedule a Showing

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

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Location

Marco Island, FL, 34145

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 William Raveis Real Estate via Florida Gulf Coast MLS

Last checked: 1 hour ago

Listing updated: July 25, 2026

© 2026 Florida Gulf Coast 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 (IDX) program of the Florida Gulf Coast Association of REALTORS®. 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
83
Excellent

What shaped this score

✓Canal
✓Dock with boat lift
✓Fits boats up to ~100ft+ (est.)
✓Premium waterfront location
Est. waterfront~160 ft

Frontage wraps multiple water edges (end-of-canal or corner lot), so boat fit reflects the usable berth — broker-stated dockage where available, otherwise the canal-end width — not the total frontage.

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%

$900,000 down

%
Principal & Interest$23,350/mo
Property Tax (est. ~1.2%, varies by county)$4,500/mo
Home Insurance (est.)$250/mo
Total Monthly Payment$28,100
Loan Amount: $3,600,000Rate: 6.75%
Get Pre-Qualified

Estimated payments only. Actual rates and terms may vary.

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$4,500,000Tour 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.