$10,000,000
 $53,682 est/mo Sourced by Back At You

9 Castaña St,GUAYNABO, PR 00968

GUAYNABO, PR 00968

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Description

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.

Details

MLS #PR9120156
Listing TypeFor Sale
StyleHouse
HOA Dues$650
Sub-TypeFor-sale
StatusActive
Year1997
Days On Site211
Listing Provided ByJOEL A KATZ | Joel Katz

Features

Bed(s)7
Bath(s) 10 Total
SQ Feet10,000
Car PortYes
PoolYes
Story(s)2
ZoningRESI
Acreage1.20

Area Information

StatePR
CountyGuaynabo
CityGUAYNABO
Zip Code00968
Area00968 Guaynabo
Community NameSAN PATRICIO URBANIZATION
Listing VS Median (in SAN PATRICIO URBANIZATION)
Price:
$10,000,000
low | high
Med:
$10,000,000
50% of Average
sqft:
10,000
low | high
Med:
10,000
50% of Average
$ / sqft:
$1,000
low | high
Med:
$1,000
50% of Average
On site:
211
low | high
Med:
211
100% of Average
Sourced by Back At You

Market Activity 00968

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 Listings courtesy of Stellar MLS as distributed by MLS GRID.Based on information submitted to the MLS GRID as of October 21, 2026 at 3:07:15 PM PDT All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. The Digital Millennium Copyright Act of 1998, 17 U.S.C. § 512 (the “DMCA”) provides recourse for copyright owners who believe that material appearing on the Internet infringes their rights under U.S. copyright law. If you believe in good faith that any content or material made available in connection with our website or services infringes your copyright, you (or your agent) may send us a notice requesting that the content or material be removed, or access to it blocked. Notices must be sent in writing by email to DMCAnotice@MLSGrid.com. “The DMCA requires that your notice of alleged copyright infringement include the following information: (1) description of the copyrighted work that is the subject of claimed infringement; (2) description of the alleged infringing content and information sufficient to permit us to locate the content; (3) contact information for you, including your address, telephone number and email address; (4) a statement by you that you have a good faith belief that the content in the manner complained of is not authorized by the copyright owner, or its agent, or by the operation of any law; (5) a statement by you, signed under penalty of perjury, that the information in the notification is accurate and that you have the authority to enforce the copyrights that are claimed to be infringed; and (6) a physical or electronic signature of the copyright owner or a person authorized to act on the copyright owner’s behalf. Failure to include all of the above information may result in the delay of the processing of your complaint.

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Learn More About This Property

StatePR
CountyGuaynabo
CityGUAYNABO
Zip Code00968
Area00968 Guaynabo
Community NameSAN PATRICIO URBANIZATION
Listing VS Median (in SAN PATRICIO URBANIZATION)
Price:
$10,000,000
low | high
Med:
$10,000,000
50% of Average
sqft:
10,000
low | high
Med:
10,000
50% of Average
$ / sqft:
$1,000
low | high
Med:
$1,000
50% of Average
On site:
211
low | high
Med:
211
100% of Average
Sourced by Back At You
Listing Updated: July 9, 2026 at 5:35:36 PM PDT

                                                                                                                                                             

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