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3742 Seagrape Street, Big Pine Key, FL 33043

$5,390,000
Property Type: Residential Bedrooms: 3 Baths: 3 Square Footage: 4,687 Lot Size (sq. ft.): 49,760 Status: Active
Current Price: $5,390,000 List Date: 6/06/2025 Last Modified: 3/28/2026

Overview

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 breathtaki ...

Listing Details MLS# 615356

Location, Tax & Legal

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
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

Contract Information

Listing Board
Marathon/Lower Keys
As is Rght to Inspct
Yes
Species List
Yes

General Property Description

Realtor.COM Type
Residential - Single Family
Style
Single Family
Waterfront
Yes
Control Depth
3
Pool
Yes
Year Built
2014
Lot SqFt
49760
Lot Sqft Source
Tax Records
Acres
1.14
Living Apx SqFt
4687
SqFt Source
Property Data Card
Total Bedrooms
3
Full Baths
3
Total Baths
3
Rentals Allowed
With Restrictions
Min Rental Days
28
Total Units
0

Association Info

Mandatory Home Owners Asc
No
Voluntary Home Owners Asc
Yes
1st Right of Refusal
No
Association Fee $
0

Dockage

Dock
Composite
Seawall
Concrete
Basin
Yes
Boat Lift
Yes
Boat Ramp
Yes

More Information

Building Style

Above Flood
Yes

Pool Info

Heated
Yes
In Ground
Yes
Concrete
Yes
Decked
Yes

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.

Fee Includes

None
Yes

Tax Exemptions

None
Yes

Appliances

Dishwasher
Yes
Disposal
Yes
Dryer
Yes
Microwave
Yes
Oven
Yes
Range
Yes
Refrigerator
Yes
Stainless Steel Appliance(s)
Yes
Washer
Yes

Pets

Pets Allowed
Yes

Cooling

Ceiling Fans(s)
Yes

Heating

Propane Stove
Yes

Waterfront

Bay Front
Yes
Gulf Front
Yes
Open Water
Yes

Waterview

Bay/Gulf View
Yes
Open Water View
Yes

Floor

Tile
Yes

Interior Features

Built-in Cabinets
Yes
Elevator
Yes
Granite Counter Top
Yes
Security System
Yes
Smoke Alarms
Yes
Split Bedroom
Yes
Tray Ceilings
Yes
Walk-in Closet(s)
Yes

Property Condition

Updated/Remodeled
Yes

Specialty Rooms

Laundry Room
Yes
Media Room
Yes
Utility Room
Yes

Windows/Doors

Impact Rstnce Doors
Yes
Impact Rstnce Window
Yes

Vehicle Storage

Carport
Yes
Covered Parking
Yes
Open Parking
Yes
Off Street Parking
Yes
Trailer Storage
Yes

Construction

CBS
Yes

Land Size

1 Less Than 2 Acres
Yes

Furnished

Furnished
Yes

Utilities

Buyer to Verify
Yes
Cable Available
Yes
FKAA
Yes
Municipal Sewer
Yes
Propane
Yes
Whole House Generatr
Yes

Porch/Balcony

Open Porch/Balcony
Yes
Roof Top Deck
Yes

Exterior Features

Bar
Yes
Built-in Grill
Yes
Fencing
Yes
Hot Tub
Yes
Lighting
Yes
Outdoor Kitchen
Yes
Privacy Wall/Fence
Yes
Rain Gutters
Yes
Sprinkler System
Yes
Water Display
Yes

Roof

Concrete Roof
Yes

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 Realty
Last Updated: March - 28 - 2026
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