For Sale
Single family home for sale at 9 Castaña St, Guaynabo, PR 00968 | MLS# PR9120156 | Listing updated on 2026-03-25
Photo 1 of Single family home for sale at 9 Castaña St, Guaynabo, PR 00968 | MLS# PR9120156 | Listing updated on 2026-03-25
Photo 2 of Single family home for sale at 9 Castaña St, Guaynabo, PR 00968 | MLS# PR9120156 | Listing updated on 2026-03-25
Photo 3 of Single family home for sale at 9 Castaña St, Guaynabo, PR 00968 | MLS# PR9120156 | Listing updated on 2026-03-25
Photo 4 of Single family home for sale at 9 Castaña St, Guaynabo, PR 00968 | MLS# PR9120156 | Listing updated on 2026-03-25
54+
Beds Icon

Street View

$10,000,000

Monthly Est:$49,774

  • Beds Icon7 Beds
  • Beds Icon
    10 Baths
  • Beds Icon10,000sqft

9 Castaña St, Guaynabo, PR 00968

$49,774/moEst:

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  • 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 e
xpansive 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 Stellar MLS-FL

Property Details

  • Status

    Active

  • Type

    Single Family Residence

  • No. of Stories

    -

  • County

    Guaynabo County

  • City

    Guaynabo

  • 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

DateEventPrice

03/24/2026

Source: mls_logoStellar MLS-FL #MFRPR9120156

Listed for Sale

$10,000,000

$1,000/sqft

02/17/2026

Source: mls_logoStellar MLS-FL #MFRPR9111890

Listing Removed

$10,000,000

$1,000/sqft

Getting Around 9 Castaña St

Walk Score®

Walk Score

Somewhat Walkable

54/100

Data provided by Redfin

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.

Advertising Broker: Fred McGill | Simple Showing, Inc

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