- Overview
- Description
- Property Details
- Location
- HOA Management
- Facts & Features
- Getting Around





Street View
$10,000,000
Monthly Est:$49,774
7 Beds
- 10 Baths
8 full baths + 2 half baths
10,000sqft
9 Castaña St, Guaynabo, PR 00968
$10,000,000
$49,774/moEst:
Get Pre-Approved
Single Family Residence
Built in 1997
$650/mo HOA
1.2 acres lot
$1,000/sq.ft
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.
- Houzeo last checked: 10 minutes ago
- Listing updated: March 25, 2026 at 10:53 am
- Listing Provided by: Joel Katz (787) 587-4331 | JOEL A KATZ (787) 587-4331
- Source: Stellar MLS-FL | MLS#: PR9120156

Property Details
Status
Active
Type
Single Family Residence
No. of Stories
-
County
City
Neighborhood
--
Year Built
1997
HOA Fees
$650/mo
Finished Area
10,000 sqft
Lot Size
1.2 acres lot
Basement Area
- sqft
MLS Name
Stellar MLS
MLS Number
PR9120156
MLS Status
Active
Days on Market
218
Cumulative Days on Market
359

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Location
HOA Management
San Patricio Urbanization
HOA Fees
$650/ Monthly
Disclaimer: Amenities are based on third-party information and may vary; buyers must independently verify all amenities, as information is deemed reliable but not guaranteed.
Facts & Features
Rooms
Bedrooms & bathrooms
Bedrooms: 7
Bathrooms: 10
Primary Bedroom
Level: Second
Living Room
Level: First
Kitchen
Level: First
Interior
Interior Features
High Ceilings, Primary Bedroom Upstairs, Walk In Closet(s)
Cooling
Mini Split Unit(s)
Appliances
Cooktop, Dishwasher, Dryer, Freezer, Ice Maker, Refrigerator, Washer
Exterior Features
Basketball Court, Outdoor Kitchen, Tennis Court(s)
Heating
None
Sewer
Public Sewer
Flooring
Marble
Construction
Year Built
Year Built: 1997
Home type
Single Family Residence
Foundation Details
Concrete Perimeter
Roof
Concrete
Construction Materials
Concrete
Utilities & Energy
Pool Features
Infinity
Laundry Features
Laundry Room
Water Source
Private
Utilities
Electricity Connected, Water Connected
Other Features
Subdivision Name
San Patricio Urbanization
Price History
| Date | Event | Price |
|---|---|---|
03/24/2026 Source: | Listed for Sale | $10,000,000 $1,000/sqft |
02/17/2026 Source: | Listing Removed | $10,000,000 $1,000/sqft |
Find Homes by Property Features in Guaynabo, PR
Based on information from Stellar MLS® through Oct 30, 2026, 01:00AM as submitted to and distributed by MLS GRID. All data is obtained from various sources and may not have been verified by the 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. IDX information is provided exclusively for consumers’ personal non-commercial use. It may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data is deemed reliable but is not guaranteed by MLS GRID. The use of the MLS GRID Data may be subject to an end-user license agreement prescribed by the Member Participant’s applicable MLS, if any, and as amended from time to time. © 2026 Stellar MLS. All Rights Reserved.
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