9 CastaÑa Street, GUAYNABO, PR

$10,000,000

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7

Beds

10

Baths

10,000

Square feet

1.20

Acres

About 9 CastaÑa Street

Nestled on 1.2 acres, 9 Castaña St. represents a rare opportunity to own a multigenerational estate within San Juan’s premier gated community, San Patricio. Designed by award-winning architect Carlos Betancourt, the residence masterfully balances grand-scale entertaining with a layout that remains intimate and connected, ensuring comfort for every member of the family. The resort-style outdoor spaces create a private sanctuary in the heart of the city, featuring a fully equipped outdoor kitchen, spa-inspired pool and jacuzzi, basketball court, outdoor air-conditioning system, tranquil koi pond, and a chicken coop. Inside, the home showcases soaring ceilings and expansive living areas, including multiple formal and informal gathering spaces, a game and media room with direct access to the outdoor entertaining areas, and a fully equipped private gym. Offering over 10,000 square feet of refined living space, the residence includes 7 bedrooms, 8 full bathrooms, and 2 powder rooms. On the main level, doors open throughout, creating a seamless indoor-outdoor flow, connecting the interior living spaces to the beautifully designed outdoor areas. Additional features include a double backup generator with automatic transfer switches and a 6,000-gallon cistern with a water treatment system, ensuring comfort and reliability year-round. The property has a covered carport for 4 vehicles, along with additional driveway parking. Centrally located, this home is approximately 10 minutes from the Condado area and 25 minutes from Dorado.

Features of 9 CastaÑa Street

MLS® # PR9120156
Price $10,000,000
Bedrooms 7
Bathrooms 10.00
Full Baths 8
Half Baths 2
Square Footage 10,000
Acres 1.20
Year Built 1997
Type Residential
Sub-Type Single Family Residence
Status Active

Community Information

Address 9 CastaÑa Street
Area Guaynabo
Subdivision SAN PATRICIO URBANIZATION
City GUAYNABO
County Guaynabo
State PR
Zip Code 00968

Amenities

Is Waterfront No
Has Pool Yes

Interior

Interior Features High Ceilings, PrimaryBedroom Upstairs, Walk-In Closet(s)
Appliances Cooktop, Dishwasher, Dryer, Freezer, Ice Maker, Refrigerator, Washer
Heating None
Cooling Mini-Split Unit(s)
Fireplace No

Exterior

Exterior Features Basketball Court, Outdoor Kitchen, Tennis Court(s)
Roof Concrete
Foundation Concrete Perimeter

Additional Information

Date Listed March 24th, 2026
Days on Market 165
Zoning RESI
Foreclosure No
Short Sale No
RE / Bank Owned No

Listing Details

OfficeJOEL A KATZ

Listing Map

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