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  • 3742 Seagrape Street, Big Pine Key, FL 33043 (MLS# 619696)

3742 Seagrape Street, Big Pine Key, FL 33043

New Listing
$4,995,000
Property Type: Residential Bedrooms: 3 Baths: 3 Square Footage: 4,687 Lot Size (sq. ft.): 49,760 Status: Active
Current Price: $4,995,000 List Date: 4/30/2026 Last Modified: 4/30/2026

Description

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!

More Information MLS# 619696

Contract Information

Listing Board: Marathon/Lower Keys As is Rght to Inspct: Yes Species List: Yes Current Price: $4,995,000 Listing Date: 2026-04-30 List Price: $4,995,000

Location, Tax & Legal

City: Big Pine Mile Marker: 29 Marathon Neighborhood: N/A Side: Bay/Gulf Alternate Key #: 1369187 Add'l Parcel #1: SEE DOCUMENTS TAB Parcel #: 00297040000000 Zoning: IS - Improved Subivision District Deed Restrictions: Unknown Legal: See Documents Tab Taxes: 30568.31 Tax Year: 2026 Pub Sewer HkUp: Yes 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

General Property Description

Realtor.COM Type: Residential - Single Family Waterfront: Yes Control Depth: 4 Lot Size: 75 X 210 Lot SqFt: 49760 Pool: Yes Acres: 1.14 SqFt Source: Property Data Card Rentals Allowed: With Restrictions Min Rental Days: 28 Style: Single Family Year Built: 2014 Living Apx SqFt: 4687 Total Bedrooms: 3 Full Baths: 3 Total Baths: 3

Remarks & Misc

Remarks – Consumer: 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! 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.

Association Info

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

Fee Includes

None: 1

Dockage

Dock: Composite Basin: 1 Boat Lift: 1 Boat Ramp: 1 Seawall: Concrete

Tax Exemptions

None: 1

Appliances

Dishwasher: 1 Disposal: 1 Dryer: 1 Microwave: 1 Oven: 1 Refrigerator: 1 Stainless Steel Appliance(s): 1 Washer: 1

Pets

Pets Allowed: 1

Heating

Propane Stove: 1

Waterfront

Bay Front: 1 Gulf Front: 1 Open Water: 1

Waterview

Bay/Gulf View: 1 Open Water View: 1

Floor

Tile: 1

Interior Features

Built-in Cabinets: 1 Cathedral Ceilings: 1 Drapes/Blinds Incl: 1 Elevator: 1 Entrance Foyer: 1 Granite Counter Top: 1 Storage: 1 Walk-in Closet(s): 1 Window Treatments: 1

Property Condition

Updated/Remodeled: 1

Specialty Rooms

Laundry Room: 1 Media Room: 1 Theater Room: 1 Utility Room: 1

Building Style

Above Flood: Yes

Windows/Doors

Impact Rstnce Doors: 1 Impact Rstnce Window: 1

Vehicle Storage

Carport: 1 Covered Parking: 1 Guest Parking: 1 Open Parking: 1 RV Parking Open: 1 Off Street Parking: 1 Trailer Storage: 1

Construction

CBS: 1

Land Size

1 Less Than 2 Acres: 1

Furnished

Furnished: 1

Utilities

Buyer to Verify: 1 Cable Available: 1 FKAA: 1 Municipal Sewer: 1 Propane: 1 Whole House Generatr: 1

Porch/Balcony

Open Porch/Balcony: 1 Roof Top Deck: 1

Exterior Features

Bar: 1 Built-in Grill: 1 Fencing: 1 Lighting: 1 Outdoor Kitchen: 1 Privacy Wall/Fence: 1 Rain Gutters: 1 Sprinkler System: 1 Water Display: 1

Pool Info

In Ground: 1 Heated: Yes Concrete: 1 Decked: 1

Roof

Concrete Roof: 1

Status Change Info

Status: Active

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; Guest Parking; Off Street Parking; Open Parking; RV Parking Open; Trailer Storage Furnished: Furnished Heating: Propane Stove Utilities: Buyer to Verify; Cable Available; FKAA; Municipal Sewer; Propane; Whole House Generatr Interior Features: Built-in Cabinets; Cathedral Ceilings; Drapes/Blinds Incl; Elevator; Entrance Foyer; Granite Counter Top; Storage; Walk-in Closet(s); Window Treatments Specialty Rooms: Laundry Room; Media Room; Theater Room; Utility Room Appliances: Dishwasher; Disposal; Dryer; Microwave; Oven; Refrigerator; Stainless Steel Appliance(s); Washer Exterior Features: Bar; Built-in Grill; Fencing; 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 Relaty
Last Updated: April - 30 - 2026
The data relating to real estate for sale on this web site comes in part from the Florida Keys MLS, Inc. Information provided is deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. The information being provided is for consumers’ personal, non-commeral use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. IDX data is deemed reliable but is not guaranteed accurate by the MLS.

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