Escape to “The Castle”, a luxurious gated Gulf-front estate spanning 1.14 acres on Big Pine Key. Built in 2014 with poured concrete, impact windows/doors, elevator, and generator, this 4,600+ sq. ft. masterpiece offers 3 bedrooms, 3 baths, and breathtaking Gulf views. Boaters enjoy 235’ of dockage: 140’ protected canal dock with lift, ramp, and slip, plus 95’ open-water pier dock with lift and seawall. Inside, a chef’s kitchen with 10.5’ island, dual sinks, Jenn-Air gas range, and wood cabinetry flows to a grand family room, theater, and rooftop deck. The top-floor primary suite boasts water views, office, lounge, spa bath, and custom closet. Outside, a resort-style pool with spa, heater/chiller, and LED lighting completes this rare Florida Keys retreat.
Current real estate data for Single Family in Big Pine Key as of Nov 06, 2026
17
Single Family Listed
132
Avg DOM
913
Avg $ / SqFt
$1,714,000
Avg List Price
Listing Provided Courtesy of Ocean Sotheby’s International at 305-735-4095
Property Details
Price:
$4,650,000
MLS #:
A11877495
Status:
Active
Beds:
3
Baths:
3
Type:
Single Family
Subtype:
Single Family Residence
Subdivision:
PORT PINE HEIGHTS 2ND ADD
Neighborhood:
5940otherfloridacounty
Listed Date:
Apr 28, 2025
Finished Sq Ft:
4,687
Lot Size:
751,845,600 sqft / 0.40 acres (approx)
Year Built:
2014
Schools
Elementary School:
Sugarloaf
Middle School:
Marathon
High School:
Key West
Interior
Appliances
Electric Water Heater, Dishwasher, Disposal, Microwave
Bathrooms
3 Full Bathrooms
Cooling
Central Air
Flooring
Tile
Heating
Central
Interior Features
Built-in Features, Closet Cabinetry, Elevator, Kitchen Island
Levels
Two
Exterior
Association Amenities
None
Construction Materials
Block, CBS
Covered Spaces
8
Direction Faces
North
Exterior Features
Balcony, Lighting
Garage Spaces
4
Parking Features
Attached Carport, Carport, Circular Driveway, Covered, Driveway, Golf Cart Garage, Guest, Paver Block
Roof
Concrete
Spa Features
Gunite
View
Bay, Water
Waterfront Features
Ocean Access, Bay, Canal Front, Seawall
Financial
Tax Year
2024
Taxes
$28,079
Map
Contact Us
Mortgage Calculator
Community
- Address3742 Seagrape Street Big Pine Key FL
- SubdivisionPORT PINE HEIGHTS 2ND ADD
- CityBig Pine Key
- CountyMonroe
- Zip Code33043
Property Summary
- Located in the PORT PINE HEIGHTS 2ND ADD subdivision, 3742 Seagrape Street Big Pine Key FL is a Single Family for sale in Big Pine Key, FL, 33043. It is listed for $4,650,000 and features 3 beds, 3 baths, and has approximately 4,687 square feet of living space, and was originally constructed in 2014. The current price per square foot is $992. The average price per square foot for Single Family listings in Big Pine Key is $913. The average listing price for Single Family in Big Pine Key is $1,714,000. To schedule a showing of MLS#a11877495 at 3742 Seagrape Street in Big Pine Key, FL, contact your Trust House Realty agent at 9543362003.
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