Property Attributes
- MLS#PR9120156
- TypeSingle Family
- Listing Status Active
- CountyGuaynabo
- CityGUAYNABO
- AreaGuaynabo
- NeighborhoodSAN PATRICIO URBANIZATION
- Zip00968
- StyleSingle Family Residence
- Year Built1997
- Price$ 10,000,000
- Bedrooms7
- Full Bathrooms8
- Half Bathrooms2
- Sqr Footage10000
- Lot Size1.2 Acres
Data Source:
Stellar MLS
Property 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.
| Price History | |
|---|---|
| 3/24/2026 | Listed $10,000,000 |
General Features
| Sewer | Public Sewer |
|---|---|
| Heating | None |
| Cooling | Mini-Split Unit(s) |
| Utilities | Electricity Connected,Water Connected |
| Roof | Concrete |
| Appliances | Cooktop,Dishwasher,Dryer,Freezer,Ice Maker,Refrigerator,Washer |
| Zoning | RESI |
| HOA Fee | 650 |
| Pool Features | Infinity |
| Construction Materials | Concrete |
| Pets Allowed | Yes |
| Year Built | 1997 |
| Levels | Two |
| Property Subtype | Single Family Residence |
| Ownership | Fee Simple |
| Assoc Fee Paid Per | Monthly |
| County | Guaynabo |
| New Construction | false |
| Property Type | Residential |
| Subdivision Name | SAN PATRICIO URBANIZATION |
| Facing Direction | West |
| Garage Y/N | false |
| Total Rooms | 3 |
| Full Baths | 8 |
| Status | Active |
| Directions | head west on Avenida de Diego and follow signs toward PR-22 / Expreso José de Diego. Merge onto PR-22 heading west toward Guaynabo. Continue on PR-22 for a few minutes, then take the exit toward PR-20 / Expreso Rafael Martínez Nadal. Merge onto PR-20 southbound and continue until you reach the exit for San Patricio. After exiting, follow the local roads into the San Patricio community, then proceed to 9 Castaña Street |
| City | GUAYNABO |
| Association Name | San Patricio Urbanization |
| MLS Area | 00968 - Guaynabo |
| Lot Size Units | Acres |
| Lot Size Square Feet | 52272 |
| Carport Spaces | 4 |
| Carport Y/N | true |
| Land Lease Y/N | false |
| Additional Parcels Y/N | false |
| Lease Considered Y/N | true |
| Building Area Units | Square Feet |
| Living Area Units | Square Feet |
| Standard Status | Active |
| Occupancy Type | Vacant |
| Minimum Lease | 6 Months |
| Water Access Y/N | false |
| Monthly HOA Amount | 650 |
| Water View Y/N | false |
| Flood Zone Code | n/a |
| In Law Suite YN | false |
Interior Features
| Interior Amenities | High Ceilings,PrimaryBedroom Upstairs,Walk-In Closet(s) |
|---|---|
| Flooring | Marble |
| Furnished Y/N | Partially |
| Air Conditioning Y/N | true |
| Heating Y/N | false |
| Fireplace Y/N | false |
| Half Baths | 2 |
| Laundry Features | Laundry Room |
| Total Bedrooms | 7 |
| LivingAreaSource | Owner |
| Total Baths | 10 |
Exterior Features
| Exterior Amenities | Basketball Court,Outdoor Kitchen,Tennis Court(s) |
|---|---|
| Water Source | Private |
| Lot Size Area | 1.2 |
| Foundation Details | Concrete Perimeter |
| Building Area Total | 10000 |
| Lot Size Acres | 1.2 |
| Road Surface Type | Asphalt |
| Private Pool | true |
| Waterfront Y/N | false |
| Covered Spaces | 4 |
Amenities
- Foreclosure
- Views
- Short Sale
- New Construction
- Adult 55+
- Lease To Own
- No HOA Fees
- Furnished
- Primary On Main
- Air Conditioning
- Seller Finance
- Green
- Fixer Upper
- Horse
- Golf
- Fireplace
- Deck
- Garage
- Basement
- Pool
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All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
Updated on September 11, 2026 5:09 PM UTC