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Active · Single Family

9 CASTAÑA STREET

GUAYNABO, PR 00968

Beds
7 beds
Baths
10 baths
Area
10,000 sqft
Single FamilyBuilt 199752,272 sqft lotNoneMini-Split Unit(s)Pool$1000/sqft148 days on market

About this home

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.

Facts & features

Interior

Bedrooms
7
Bathrooms
10
Living area
10,000 sqft
Heating
None
Cooling
Mini-Split Unit(s)
Flooring
Marble
Features
High Ceilings, PrimaryBedroom Upstairs, Walk-In Closet(s)
Appliances
Cooktop, Dishwasher, Dryer, Freezer, Ice Maker, Refrigerator…

Exterior & lot

Lot size
52,272 sqft (1.2 ac)
Pool
Yes
Roof
Concrete
Construction
Concrete
Exterior
Basketball Court, Outdoor Kitchen, Tennis Court(s)

Parking

Carport
4 spaces

Financial

HOA dues
$650 / monthly
Price / sqft
$1000/sqft

Utilities

Water
Private
Sewer
Public Sewer
Utilities
Electricity Connected, Water Connected

Property

Property type
Single Family
Year built
1997
Subdivision
SAN PATRICIO URBANIZATION
County
Guaynabo

Listing

Status
Active
Days on market
1 day
MLS #
MFR785594179
Source
Stellar MLS

Listed by Joel Katz · JOEL A KATZ

Listing data provided by Stellar MLS. Information deemed reliable but not guaranteed.

Estimate your monthly cost

PITI + HOA
Estimated monthly payment$51,415/mo
Principal & interest
$50,565/mo
Property tax
Being confirmed
Home insurance
$200/mo
HOA dues
$650/mo

Opens at 20% down over 30 years at 6.5%, the same assumptions as the answers below. The record carries no tax bill for this listing yet, so that figure is being confirmed and stays out of the total rather than being filled in from a percentage of the price. Enter a rate above to count it. Insurance is left out until you enter a quote, because Florida premiums turn on roof age, elevation and carrier. Every field is editable.

Ask about this property

Answered from this listing’s own figures and the sales around it.

Price history

From the property’s MLS record.

DateEventPriceChange
Mar 24, 2026Listed$10,000,000

Neighbourhood

The schools below come from the MLS record for this home. Walking, transit and cycling figures for GUAYNABO, PR are not connected yet, so this page does not show them.

Elementary school
Not listed
Not named in the MLS record for this home
Middle school
Not listed
Not named in the MLS record for this home
High school
Not listed
Not named in the MLS record for this home

Location

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