Home in 3742 Seagrape Street, Big Pine Key, FL 33043 for sale with MLS# A11877495

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.

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3742 Seagrape Street, Big Pine Key, FL 33043

Price
Price:
$5,390,000.00
Original List Price:
$6,450,000.00
Property Status and Type
Listing Type:
For Sale
Status:
Active
Listing Category:
Residential
Property Type:
Single Family House
Description of Last Important Update:
Price Reduced
Last Major Update on:
March 3, 2026 8:40 pm
Rooms Distribution
Bedrooms:
3
Bathrooms Total:
3
Full Bath:
3
Room Type:
Laundry, Family Room, Media Room
Master Bedroom Bath:
2 Master Baths, Master Bdrm - Upstairs, Separate Shower, Master Bdrm - Ground, Separate Tub
Measures
Living Area:
4,687 Sqft
Lot Size Dimensions and Info:
49760
Lot Size Acres:
0.4
Property Features
View from the Property:
Water, Bay
Waterfront:
Yes
Waterfront Features:
Ocean Access, Canal Front, Seawall, Bayfront
Frontage Length:
300
Private Pool
Swimming Pool Features:
Concrete, Heated, In Ground
Spa
Spa Features:
Gunite
Furnished:
Negotiable
Appliances:
Dishwasher, Disposal, Microwave, Electric Water Heater
Interior:
Closet Cabinetry, Kitchen Island, Built-in Features, Elevator
Exterior:
Balcony, Lighting
Air Conditioning
Air Conditioning System:
Central Air
Heating
Heating System:
Central
Boat and Dock Features:
Private Dock, Lift
Property Entrance Faces:
North
Balcony Details:
Balcony - Open
Storm Protection Impact Glass:
Partial
Construction
Year Built:
2014
Roof:
Concrete
Levels:
Two
Entry Level (floor):
2
Construction Materials:
Block, CBS
Flooring:
Tile
Number of stories:
2
Flood Zone Code:
VE
Taxes and Expenses
Tax Annual Amount:
$28,079.00
Tax Year:
2024
Property Tax Details:
County Only
Parking
Garage
Garage Spaces:
4
Carport Spaces:
4
Covered Spaces:
8
Parking Features:
Driveway, Covered, Circular Driveway, Guest, Paver Block, Attached Carport, Golf Cart Garage, Carport
Carport
Utilities
Sewer:
Public Sewer
Utilities Available:
Cable Available
Water Source:
Public
Community
Pets Allowed?:
Yes, No Restrictions
Subdivision Name:
PORT PINE HEIGHTS 2ND ADD
Senior Community:
No
Restrictions:
No Restrictions
Community Dock
Terms
Listing Terms Considered by Seller:
Cash, Conventional
Buyer Possession:
Close Of Escrow
Zoning and Legal
Tax Legal Description:
BK 77 LOTS 3 AND 4 PORT PINE HEIGHTS 2ND ADD BIG PINE KEY PB4-167 AND ADJ FILL BAY BTM OR376-233 OR517-179 OR555-195D/C OR872-1053/1057 OR12
Real Estate Folio Number (Parcel Number):
00297040000000
Zoning:
SF
Public Schools Assigned
Elementary School:
Deerwood Elem (osceola Cty)
High School:
Key West
Middle Or Junior School:
Marathon
Listing History
Active on the market since:
April 28, 2025
Listing Agreement executed on:
April 28, 2025
Price change occurred on:
March 3, 2026 8:40 pm
Listing Status Last Changed On:
April 28, 2025 4:19 pm
Photos updated on:
April 29, 2026 3:43 pm
Last Modified:
August 5, 2026 2:53 pm
Additional Information
Courtesy of:
Ocean Sotheby's International
Attribution:
Not provided
Location
Street Name:
Seagrape
Street Number:
3742
City:
Big Pine Key
State:
Florida
Zip Code:
33043
County:
Monroe
Latitude:
N24° 43' 23.3''
Longitude:
W82° 35' 57.8''
Street Suffix:
Street
Property Map

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Neighborhood Stats

Source: U.S. Census Bureau, ACS 5-Year Estimates

Median Household Income $92,955
Median Home Value $563,700
Median Rent $2,017/mo
Median Age 53
Population 4,632
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Association of REALTORS®
Disclaimer: IDX listing information is presented by Rebonus Brokerage LLC for consumer informational purposes only. The information provided is 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. Data is deemed reliable but is not guaranteed by the MLS or the real estate broker. This page presents structured listing information sourced directly from the MLS via the RESO Web API feed. Rebonus prioritizes maximum field coverage and data completeness, displaying the most granular MLS-provided attributes available.