Escape to ''The Castle'', a luxurious gated Gulf-front estate rarely spanning 1.14 acres on Big Pine Key. This extraordinary retreat is a graceful 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, this is ultimate Keys living without compromise!
For sale
Price cut: $200K (10/6)
$4,450,000
3742 Sea Grape St, Big Pine Key, FL 33043
3beds
4,687sqft
Single Family Residence
Built in 2014
1.14 Acres Lot
$4,210,900 Zestimate®
$949/sqft
$-- HOA
What's special
- 160 days
- 931
- 54
Zillow last checked:
Listing updated:
Listed by:
Ally Kelley 727-459-0493,
Ocean Sotheby's International,
Jo Ann Cook 305-360-7968,
Ocean Sotheby's International
Source: FLKMLS,MLS#: 619696
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 3
- Bathrooms: 3
- Full bathrooms: 3
Heating
- Has Heating (Unspecified Type)
Appliances
- Included: Washer, Dryer, Dishwasher, Refrigerator, Oven, Microwave, Disposal, Stainless Steel Appliance(s)
- Laundry: Laundry Room
Features
- Built-in Features, Granite Counters, Elevator, Storage, Walk-in Closet(s), Media Room
- Flooring: Tile
- Furnished: Yes
Interior area
- Total structure area: 4,687
- Total interior livable area: 4,687 sqft
Video & virtual tour
Property
Parking
- Parking features: Open, RV Access/Parking, Storage
- Has uncovered spaces: Yes
Features
- Patio & porch: Open Porch/Balcony, Roof Top Deck
- Exterior features: Bar, Built-in Barbecue, Rain Gutters, Lighting, Outdoor Kitchen, Water Display
- Has private pool: Yes
- Pool features: In Ground, Concrete, Decked
- Fencing: Fenced,Privacy
- On waterfront: Yes
Lot
- Size: 1.14 Acres
- Dimensions: 75 X 210
Details
- Additional parcels included: SEE DOCUMENTS TAB
- Parcel number: 00297040000000
- Zoning: IS - Improved Subivision District
- Other equipment: Home Theater, Generator, Irrigation Equipment
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Materials
- CBS
Condition
- Updated/Remodeled
- New construction: No
- Year built: 2014
Utilities & green energy
- Utilities for property: Cable Available
Community & HOA
Community
- Subdivision: Port Pine Heights (29.0)
HOA
- Has HOA: No
- Services included: None
Location
- Region: Big Pine Key
Financial & listing details
- Price per square foot: $949/sqft
- Tax assessed value: $3,301,091
- Annual tax amount: $30,568
- Date on market: 4/30/2026
Estimated market value
$4,210,900
$4.00M - $4.42M
Not available
Price history
| Date | Event | Price |
|---|---|---|
| 10/6/2026 | Price change | $4,450,000-4.3%$949/sqft |
Source: | ||
| 8/5/2026 | Price change | $4,650,000-6.9%$992/sqft |
Source: | ||
| 4/30/2026 | Price change | $4,995,000-7.3%$1,066/sqft |
Source: | ||
| 3/3/2026 | Price change | $5,390,000-8.6%$1,150/sqft |
Source: | ||
| 11/10/2025 | Price change | $5,900,000-8.5%$1,259/sqft |
Source: | ||
| 7/17/2025 | Price change | $6,450,000-7.2%$1,376/sqft |
Source: | ||
| 6/6/2025 | Listed for sale | $6,950,000+139.7%$1,483/sqft |
Source: | ||
| 2/1/2019 | Sold | $2,900,000+3.6%$619/sqft |
Source: | ||
| 11/23/2018 | Listed for sale | $2,800,000+400%$597/sqft |
Source: Coldwell Banker Schmitt RE Co. Lower Keys Office #582922 Report a problem | ||
| 3/21/2013 | Sold | $560,000-6%$119/sqft |
Source: | ||
| 1/13/2013 | Pending sale | $595,500$127/sqft |
Source: Preferred Properties #117328 Report a problem | ||
| 12/4/2012 | Listed for sale | $595,500-29.9%$127/sqft |
Source: Preferred Properties #117328 Report a problem | ||
| 4/2/2012 | Listing removed | $850,000$181/sqft |
Source: Coldwell Banker Schmitt Real Estate Co. #552967 Report a problem | ||
| 10/28/2011 | Listed for sale | $850,000$181/sqft |
Source: Coldwell Banker Schmitt Real Estate Co. #552967 Report a problem | ||
| 8/13/2011 | Listing removed | $850,000$181/sqft |
Source: Schmitt Real Estate Co. #552967 Report a problem | ||
| 10/3/2010 | Listed for sale | $850,000-12.8%$181/sqft |
Source: Coldwell Banker Schmitt Real Estate Co. #552967 Report a problem | ||
| 9/23/2004 | Sold | $975,000$208/sqft |
Source: | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $28,002 +8.8% | $3,052,986 +10% |
| 2024 | $25,730 +9% | $2,775,442 +10% |
| 2023 | $23,601 +10% | $2,523,129 +10% |
| 2022 | $21,448 +8.6% | $2,293,754 +10% |
| 2021 | $19,742 -0.6% | $2,085,231 +0.4% |
| 2020 | $19,855 | $2,076,078 +5.9% |
| 2019 | $19,855 +7.4% | $1,960,891 +1.9% |
| 2018 | $18,494 -0.9% | $1,924,329 -0.5% |
| 2017 | $18,669 +0.3% | $1,934,751 +17.7% |
| 2016 | $18,617 +14.2% | $1,643,627 +17.2% |
| 2015 | $16,300 | $1,402,884 |
Find assessor info on the county website
Monthly payment
Est. payment




