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$5,900,000
3742 Seagrape Street
Big Pine Key, FL 33043
MLS# 615356
3 beds  |  3 baths  |  4687 sqft

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3742 Seagrape Street
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Property Description
Breathe in serenity during your escape to the ''The Castle'', a luxurious gated Gulf-front estate gracefully spanning 1.14 acres on Big Pine Key. This extraordinary retreat is a rare blend of architectural grandeur and coastal charm, thoughtfully designed for both relaxation and recreation. Boaters will delight in an unparalleled offering of 235 feet of dockage total: 140 feet of protected canal-front dockage featuring a 15,000 lb lift, cut-in slip, boat ramp, PLUS a 95-foot open water pier-style dock with additional 15,000 lb lift and cut-in slip - set against a 130-foot concrete seawall for secure, convenient access. Crafted in 2014 with solid poured concrete, impact-rated windows and doors, whole home generator and elevator, the home is built for enduring elegance. With over 4,600 square feet of refined interior space, this 3-bedroom, 3-bathroom estate is an architect's masterpiece with its stately presence, curved openings, and striking double staircase. Step inside to a breathtaking panorama of endless open Gulf waters and nightly sunset performances. The chef's kitchen is a dream for entertaining, featuring 10.5-foot island with seating for 8, dual sinks, refrigerators, and ovens, plus Jenn-Air 6-burner gas cooktop with pot filler, and rich wood cabinetry. Enjoy the grand family room with Gulf views, host movie nights in the private theater, or dine al-fresco under the stars. Nearby, find the full-size laundry room and storage. The top-floor primary suite is a sanctuary, offering sweeping water views, home office, private lounge with kitchenette, spa-like bath with clawfoot tub, tiled shower and generous walk-in closet with additional laundry. Outside, the resort-style pool beckons with a spa, water features, LED lighting, plus heater and chiller. Rooftop deck with 180-degree views, and unrivaled sunsets await. Offered fully furnished, including a 2023 Sea Cat, 14.5' skiff, and 2015 Chevrolet Silverado - this is ultimate Keys living without compromise!

Details
Maps
Documents
Contract Information
Listing Board: Marathon/Lower Keys
As is Rght to Inspct: Yes
Species List: Yes
Current Price: $5,900,000
Listing Date: 2025-06-06
List Price: $5,900,000
Location, Tax & Legal
City: Big Pine
Off Shore Island: No
Mile Marker: 29
Marathon Neighborhood: N/A
Side: Bay/Gulf
Alternate Key #: 1369187
Handicap Access: No
Add'l Parcel #1: SEE DOCUMENTS TAB
Parcel #: 00297040-000000
Zoning: IS - Improved Subivision District
Deed Restrictions: Unknown
Legal: See Documents Tab
Taxes: 28079.22
Tax Year: 2024
Pub Sewer HkUp: Yes
Street #: 3742
Street Name: Seagrape
Street Suffix: Street
Key/Island: Big Pine Key
State/Province: FL
Zip Code: 33043
County: Monroe
Subdivision: Port Pine Heights (29.0)
Area: 11 - Big Pine Key, No Name Key
General Property Description
Realtor.COM Type: Residential - Single Family
Waterfront: Yes
Control Depth: 3
Lot SqFt: 49760
Pool: Yes
Lot Sqft Source: Tax Records
Total Units: 0
Acres: 1.14
SqFt Source: Property Data Card
Rentals Allowed: With Restrictions
Min Rental Days: 28
Style: Single Family
Year Built: 2014
Living Apx SqFt: 4687
Total Bedrooms: 3
Full Baths: 3
Total Baths: 3
Remarks & Misc
Remarks – Consumer: Breathe in serenity during your escape to the ''The Castle'', a luxurious gated Gulf-front estate gracefully spanning 1.14 acres on Big Pine Key. This extraordinary retreat is a rare blend of architectural grandeur and coastal charm, thoughtfully designed for both relaxation and recreation. Boaters will delight in an unparalleled offering of 235 feet of dockage total: 140 feet of protected canal-front dockage featuring a 15,000 lb lift, cut-in slip, boat ramp, PLUS a 95-foot open water pier-style dock with additional 15,000 lb lift and cut-in slip - set against a 130-foot concrete seawall for secure, convenient access. Crafted in 2014 with solid poured concrete, impact-rated windows and doors, whole home generator and elevator, the home is built for enduring elegance. With over 4,600 square feet of refined interior space, this 3-bedroom, 3-bathroom estate is an architect's masterpiece with its stately presence, curved openings, and striking double staircase. Step inside to a breathtaking panorama of endless open Gulf waters and nightly sunset performances. The chef's kitchen is a dream for entertaining, featuring 10.5-foot island with seating for 8, dual sinks, refrigerators, and ovens, plus Jenn-Air 6-burner gas cooktop with pot filler, and rich wood cabinetry. Enjoy the grand family room with Gulf views, host movie nights in the private theater, or dine al-fresco under the stars. Nearby, find the full-size laundry room and storage. The top-floor primary suite is a sanctuary, offering sweeping water views, home office, private lounge with kitchenette, spa-like bath with clawfoot tub, tiled shower and generous walk-in closet with additional laundry. Outside, the resort-style pool beckons with a spa, water features, LED lighting, plus heater and chiller. Rooftop deck with 180-degree views, and unrivaled sunsets await. Offered fully furnished, including a 2023 Sea Cat, 14.5' skiff, and 2015 Chevrolet Silverado - this is ultimate Keys living without compromise!
Directions: From US-1, right on Key Deer Blvd all the way to Kyle Blvd, left onto Kyle, left onto Sea Grape Street. Property is on right side with gated entry.
Association Info
Mandatory Home Owners Asc: No
Voluntary Home Owners Asc: Yes
1st Right of Refusal: No
Association Fee $: 0
Fee Includes
None: 1
Dockage
Dock: Composite
Basin: 1
Boat Lift: 1
Boat Ramp: 1
Seawall: Concrete
Tax Exemptions
None: 1
Appliances
Dishwasher: 1
Disposal: 1
Dryer: 1
Microwave: 1
Oven: 1
Range: 1
Refrigerator: 1
Stainless Steel Appliance(s): 1
Washer: 1
Pets
Pets Allowed: 1
Cooling
Ceiling Fans(s): 1
Heating
Propane Stove: 1
Waterfront
Bay Front: 1
Gulf Front: 1
Open Water: 1
Waterview
Bay/Gulf View: 1
Open Water View: 1
Floor
Tile: 1
Interior Features
Built-in Cabinets: 1
Elevator: 1
Granite Counter Top: 1
Security System: 1
Smoke Alarms: 1
Split Bedroom: 1
Tray Ceilings: 1
Walk-in Closet(s): 1
Property Condition
Updated/Remodeled: 1
Specialty Rooms
Laundry Room: 1
Media Room: 1
Utility Room: 1
Building Style
Above Flood: Yes
Windows/Doors
Impact Rstnce Doors: 1
Impact Rstnce Window: 1
Vehicle Storage
Carport: 1
Covered Parking: 1
Open Parking: 1
Off Street Parking: 1
Trailer Storage: 1
Construction
CBS: 1
Land Size
1 Less Than 2 Acres: 1
Furnished
Furnished: 1
Utilities
Buyer to Verify: 1
Cable Available: 1
FKAA: 1
Municipal Sewer: 1
Propane: 1
Whole House Generatr: 1
Porch/Balcony
Open Porch/Balcony: 1
Roof Top Deck: 1
Exterior Features
Bar: 1
Built-in Grill: 1
Fencing: 1
Hot Tub: 1
Lighting: 1
Outdoor Kitchen: 1
Privacy Wall/Fence: 1
Rain Gutters: 1
Sprinkler System: 1
Water Display: 1
Pool Info
In Ground: 1
Heated: Yes
Concrete: 1
Decked: 1
Roof
Concrete Roof: 1
Status Change Info
Status: Active
Property Features
Fee Includes: None
Tax Exemptions: None
Waterfront: Bay Front; Gulf Front; Open Water
Waterview: Bay/Gulf View; Open Water View
Dockage: Basin; Boat Lift; Boat Ramp
Property Condition: Updated/Remodeled
Vehicle Storage: Carport; Covered Parking; Off Street Parking; Open Parking; Trailer Storage
Furnished: Furnished
Cooling: Ceiling Fans(s)
Heating: Propane Stove
Utilities: Buyer to Verify; Cable Available; FKAA; Municipal Sewer; Propane; Whole House Generatr
Interior Features: Built-in Cabinets; Elevator; Granite Counter Top; Security System; Smoke Alarms; Split Bedroom; Tray Ceilings; Walk-in Closet(s)
Specialty Rooms: Laundry Room; Media Room; Utility Room
Appliances: Dishwasher; Disposal; Dryer; Microwave; Oven; Range; Refrigerator; Stainless Steel Appliance(s); Washer
Exterior Features: Bar; Built-in Grill; Fencing; Hot Tub; Lighting; Outdoor Kitchen; Privacy Wall/Fence; Rain Gutters; Sprinkler System; Water Display
Pool Info: In Ground; Concrete; Decked
Construction: CBS
Floor: Tile
Roof: Concrete Roof
Pets: Pets Allowed
Land Size: 1 Less Than 2 Acres

Listing Office: Ocean Sotheby's International

Last Updated: December - 16 - 2025

The data relating to real estate for sale on this web site comes in part from the Florida Keys MLS, Inc. Information provided is deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. The information being provided is for consumers’ personal, non-commeral use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. IDX data is deemed reliable but is not guaranteed accurate by the MLS.