16750 Old State Road 4a, Sugarloaf Key, FL

$8,995,000

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6

Beds

5

Baths

5,208

Square feet

2.33

Acres

About 16750 Old State Road 4a

Introducing Blue Water Lagoon Estate! Experience unmatched privacy and exceptional waterfront living at this gated 2.33-acre oceanfront estate in exclusive Sugarloaf Beach — a location famously featured in the film ''True Lies''. Designed for the avid boater and those seeking a resort-style lifestyle, this 5,208 sq. ft. residence offers rare amenities and direct access to world-class fishing and diving. A protected 6-boat basin with room for extra boats is the centerpiece of the waterfront, complete with 25K and 16K lifts, a boat ramp, sandy beach, lookout point, and composite observation deck. After a day on the water, unwind in the lagoon-style saltwater pool with heater, chiller, and custom water features. The expansive tiki bar includes TVs, True refrigerator/freezer drawers, and an ice machine—perfect for effortless outdoor entertaining. Additional features include a firepit, private sandy beach, and a full outdoor kitchen equipped with built-in BBQ, Viking appliances, and True refrigeration. The upper level offers a bright and open Great Room with sweeping ocean views, a spacious dining area, and a chef's kitchen with stainless appliances. Two covered verandas provide ideal spaces for taking in the breezes and panoramic vistas. The primary suite features an office, en suite bath, walk-in closet with laundry, sunroom, and loft. Two additional upstairs guest rooms comfortably accommodate visitors, while the separate downstairs living area offers three more guest bedrooms for privacy and flexibility. Designed for hosting and convenience, the home is equipped with a Sonos sound system, property-wide Wi-Fi, abundant storage, a two-car garage with fishing lockers, and generous parking along a winding paver driveway. Lush, mature landscaping surrounds the property, creating a serene and secluded Sugarloaf Key retreat. Call for more information today!

Features of 16750 Old State Road 4a

MLS® # 617329
Price $8,995,000
Bedrooms 6
Bathrooms 5.00
Full Baths 4
Half Baths 1
Square Footage 5,208
Acres 2.33
Year Built 1959
Type Residential
Sub-Type Single Family Residence
Status Active

Community Information

Address 16750 Old State Road 4a
Area 06 - Bay Point to Sugarloaf
Subdivision Sugarloaf Beach (17.0)
City Sugarloaf Key
County Monroe
State FL
Zip Code 33042

Amenities

Amenities Other Area Features, Bike Paths
Utilities FKAA, Buyer to Verify
Parking Garage, Attached, Off Street Parking, RV Parking Open, Trailer Storage
View Ocean View, Open Water View, Harbor/Marina View
Is Waterfront Yes
Waterfront Oceanfront, Open Water
Has Pool Yes
Pool In Ground, Salt Water, Concrete

Interior

Interior Features Drapes/Blinds Incl, Split Bedroom, Entrance Foyer, Built-in Cabinets, Granite Counter Top, Security System, Storage, Walk-in Closet(s), Whirlpool Bath Tub, Window Treatments, Bar
Appliances More Appliances, Washer, Dryer, Dishwasher, Refrigerator, Range, Oven, Microwave, Freezer, Ice Machine, Wine Cooler, Stainless Steel Appliance(s)
Heating Central
Cooling Central Air, Ceiling Fans(s)
Fireplace No
Has Basement No

Exterior

Exterior Features Bar, Built-in Grill, Chickee Hut, Fencing, Lighting, Lanai, Outdoor Kitchen, Outdoor Shower, Privacy Wall/Fence, Sandy Beach, Sprinkler System, Storage, Water Display
Lot Description 2 Less Than 5 Acres
Windows Impact Rstnce Window, Impact Rstnce Doors
Roof Metal Roof
Construction CBS

Additional Information

Date Listed November 15th, 2025
Days on Market 159
Zoning SS - Sparsely Settled Residential District
Short Sale No
RE / Bank Owned No

Listing Details

AgentLisa Swanson
OfficeThe Agency Florida Keys

Listing Map

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