$4,650,000
3 bd · 3 ba · 4,687 sq ft · Single Family Residence
3742 Seagrape St, Big Pine FL 33043
For Sale · Active listing
Est. payment $25,554/mo · Mortgage calculator
Listed by Ocean Sotheby's International / Jo Ann Cook
Contact: 305-360-7968 (listing contact).
Shown through Slice Realty. Requests from this page reach Slice Realty / Propiedad Futura, not the listing agent.
About this home
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.
Facts
- MLS #
- A11877495
- Subdivision
- PORT PINE HEIGHTS 2ND ADD
- Property type
- Residential
- Property subtype
- Single Family Residence
- Sq. ft.
- 4,687
- Price per sq. ft.
- $992 / sq ft
- Year built
- 2014
- Days on market
- 468
- County
- Monroe County
- Date listed
- Apr 28, 2025
- Last updated
- Aug 9, 2026
Financial considerations
- Taxes
- $28,079 (2024)
Exterior features
- Waterfront
- Yes
- View
- Bay, Water
- Construction
- Concrete Block Construction, CBS Construction, Elevated Construction
- Roof
- Concrete
- Additional features
- Lighting, Open Balcony
Interior features
- Furnished
- Furniture For Sale
- Heating
- Central
- Cooling
- Central Air
- Appliances
- Dishwasher, Disposal, Electric Water Heater, Microwave
- Window features
- Clear Impact Glass
- Additional features
- Second Floor Entry, Built-in Features, Closet Cabinetry, Cooking Island, Elevator, Family Room, Media Room, Utility Room/Laundry
Additional features
- Pets allowed
- Yes
- Community
- None
Mortgage calculator
Includes principal and interest, taxes and insurance.
Rate: Freddie Mac 30-year average (2026-10-22). Estimate only.
Local context (our analysis)
Area stats are available for our covered neighborhoods. See neighborhoods.
Source: Southeast Florida MLS (SEFMLS). Last updated Aug 9, 2026, 11:07 AM ET
Listing data is deemed reliable but is not guaranteed accurate by the MLS. Information is provided for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.