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355 Stirrup Key Boulevard

Marathon, FL, 33050

Active

$3,300,000

4

Bedrooms

4

Bathrooms

2,540 sqft

Living Area

1994

Year Built

19,274

Lot Size (sqft)

$1,200

HOA / Yearly

29

Days on Market

Dock Score™

DockOnly
78
Good

What shaped this score

✓Ocean Access
✓Dock with boat lift
✓Fits boats up to ~90ft (est.)
✓Bridge-free to bay

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

Dock & Water AccessMLS

Bay FrontGulf FrontOpen Water📝 15K-lb boat lift

AI Aerial Imagery Detection

Dock DetectedBoat Lift DetectedSeawall DetectedDeep Water Indicators~77-103 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

Welcome to Sunset Anchorage, a beautifully renovated open-water home in the exclusive gated community of Stirrup Key. Set on an expansive lot and a half, this three-story CBS turnkey home offers exceptional privacy, protected dockage and sweeping Gulf views with spectacular sunsets. Extensively updated, the home features a brand-new kitchen with custom cabinetry, a custom bar, updated flooring, new impact windows and doors, and new A/C units. New Hardie board siding accents the front exterior, adding texture and architectural character. The main level features the primary suite with a newly expanded and completely renovated bathroom. An additional guest bedroom enjoys marina views with a full bath nearby. A newly extended covered back porch off the living and dining rooms offers outdoor seating and dining overlooking the pool and Gulf. Upstairs, a secondary primary suite features a private full bath and walk-out balcony with stunning bay views, while another guest bedroom and half bath also enjoy expansive open-water views. Downstairs, a spacious covered patio and newly built tiki bar create additional entertaining space poolside. The pool has been beautifully re-tiled and refinished with new equipment, including a heater and chiller. A redone waterfront observation deck provides easy kayak access, views over the sandy bay bottom, and a front-row vantage point for spectacular sunsets. Protected dockage is just across the street in Stirrup Key's private marina. Boat slip D41 includes a new concrete walk-out dock and a 15,000-lb boat lift, with instant bay access and quick ocean access via Vaca Cut or Seven Mile Bridge. Additional features include a metal roof, garage, ground-floor storage, a fenced dog run, and mature tropical landscaping highlighted by a grove of gumbo limbo trees. Sunset Anchorage brings together open-water views, protected boating, privacy, and unforgettable Florida Keys waterfront living-offered turnkey and ready to enjoy from day one.

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Location

Marathon, FL, 33050

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 Coldwell Banker Schmitt Real Estate Co. via Florida Keys MLS

Last checked: 5 minutes ago

Listing updated: October 16, 2026

© 2026 Florida Keys Board 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 Keys Board 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.

Nearest Bridge Clearances

Florida Keys, critical for tall/large vessels

No bridge data available for this location.
FEMA Flood Zone VE
BFE: 12ft

Coastal High Hazard

View FEMA Flood Map →
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Mortgage Calculator

Estimate your monthly payment for this waterfront property

20%

$660,000 down

%
Principal & Interest$17,123/mo
Property Tax (est. ~1.2%, varies by county)$3,300/mo
Home Insurance (est.)$250/mo
HOA Fees$100/mo
Total Monthly Payment$20,773
Loan Amount: $2,640,000Rate: 6.75%
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$3,300,000Tour 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.