Premier Brokers International
3742 Seagrape Street, Big Pine Key, FL 33043
ActiveBeachesMLS
ActiveMLS® A11877495
$4,650,000

3742 Seagrape Street, Big Pine Key, FL 33043

Beds
3
Baths
3
Sqft
4,687
Est. payment$33,428/mo
Home type
Single Family Residence
Year built
2014
Lot size
—
Price / sqft
$992
HOA
—
Community
PORT PINE HEIGHTS 2ND ADD

Property description

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.

Listing activity

Days on market
—
Listed
—
MLS listing updated
Sep 9, 2026
Feed last checked
12 minutes ago

Listed by Jo Ann Cook · Ocean Sotheby's International

Map

Map location is based on MLS-supplied coordinates. Verify the location before relying on it.

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms
3
Bathrooms
3
Property

Not reported by the listing source.

Construction

Type & style

Home type
Single Family Residence
Year built
2014
Utilities & green energy

Not reported by the listing source.

Community & HOA

Community

Subdivision
PORT PINE HEIGHTS 2ND ADD
Lease details

Not reported by the listing source.

Location

Area details

City
Big Pine Key
County
Monroe
ZIP code
33043
Manufactured home details

Not reported by the listing source.

Financial & listing details

Listing

MLS number
A11877495
Additional MLS details

Reported by the listing source

Bathrooms Total Integer
3
County Or Parish
Monroe
List Price
4650000
Living Area
4687
Mls Status
Active
Postal Code
33043
Property Sub Type
Single Family Residence
Property Type
Residential
Standard Status
Active
State Or Province
FL
Subdivision Name
PORT PINE HEIGHTS 2ND ADD
Bedrooms Total
3

Market value

Automated estimate—No licensed valuation source connected
Estimated sales range—Ask Karim for a local market analysis
Estimated rent—No licensed rental valuation source connected

Price history

DateEventPrice
Sep 9, 2026Price updatedBeachesMLS$4,650,000$992/sqft

Public tax history

—

Payment calculator

Estimated monthly payment$33,428/moIllustrative estimate, not a loan offer.
Principal & interest
$24,128
Property taxes
$6,975
Insurance
$2,325
Association dues
—

Live national rate context is displayed below through Mortgage News Daily’s official widget. The calculator rate remains a separate assumption until licensed machine-readable access is connected. This is not a loan offer.

Neighborhood

Area

PORT PINE HEIGHTS 2ND ADD

Big Pine Key · Monroe County · 33043

Climate risk

—

No licensed climate-risk source is connected.

Nearby schools

Not reported by the listing source.

School names and districts are MLS-reported when available. Verify attendance boundaries with the school district. Ratings require a licensed ratings provider.

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BeachesMLS

BeachesMLS · Listing courtesy of Ocean Sotheby's International. All listings featuring the BMLS logo are provided by BeachesMLS, Inc. This information is not verified for authenticity or accuracy and is not guaranteed. Copyright ©2026 BeachesMLS, Inc. IDX information is provided exclusively for consumers’ personal, non-commercial use and may be used only to identify prospective properties they may be interested in purchasing or leasing. Terms of use · Equal Housing Opportunity.