9 CASTAÑA STREET, GUAYNABO, PR, 00968
Active132 days on marketListed Mar 24, 2026MLS #PR9120156
About this home
9 CASTAÑA STREET
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
The home at a glance
7
Bedrooms
9
Bathrooms
10,000
Sqft
1.2 ac
Lot size
1997
Year built
Two
Levels
$1,000
Per sqft
Inside
Outside & construction
Community & fees
Utilities & systems
The numbers
What it really costs
Principal and interest plus estimated taxes and insurance. Run your own numbers below.
$67,686 /mo · 10% down Conventional, 30-yr fixed at 6%
The assumptions
Above the FHA loan limit for our service areas, so Conventional is the default. VA buyers: switch below — $0 down.
These numbers assume a generic buyer — your credit, down payment and loan program change them. Get the real quote in minutes:
Andrew Acosta
Acosta Home Loans with PRMG · NMLS #1468866
Run your own numbers
FHA isn’t available at this price — the loan would exceed the $541,287 FHA limit for our service areas.
Estimated payment
$67,686/mo
Includes estimated PMI — it drops off once you reach 20% equity. Estimates only — taxes at 1.1%/yr and typical insurance; your lender’s numbers will differ. CENTURY 21 Edge partners with Florida’s best lenders.
Where it sits
Inside GUAYNABO 00968
The numbers that matter
The GUAYNABO 00968 market
This home is listed 19508% above the GUAYNABO 00968 median.
Paper trail
This home's history
Reality check
What actually sold near 9 CASTAÑA STREET
Asking prices are opinions — closed sales are facts. The most comparable homes that actually changed hands nearby in the last twelve months.
Sold · Dec ’25$4,075,000
#21 MANUEL RIVERA FERRER ST.
6 bd · 6.5 ba · 9,310 sqft · $438/sqft · 593 DOM
Sold · Nov ’25$1,250,000
18 G STREET VILLA CAPARRA
7 bd · 5 ba · 4,600 sqft · $272/sqft · 278 DOM
Sold · Aug ’25$282,000
613 CALLE OLYMPIC URB. SUMMIT HILLS
8 bd · 4 ba · 2,999 sqft · $94/sqft · 21 DOM
Closed-sale data from the MLS, last 12 months, selected for similarity in size and location. No two homes are identical — ask us for a full comparative analysis.
Your home team
The pros in your corner
Buying a home is two conversations — the home and the money. Here’s who handles each, side by side, already working together.
Your agent
Tyler Stoddard
REALTOR · CENTURY 21 Edge
Tours, negotiation, and every question about 9 CASTAÑA STREET — start here.
Your lender
Andrew Acosta
Acosta Home Loans with PRMG · NMLS #1468866
Pre-approval, rates, and the real monthly number for 9 CASTAÑA STREET — before you fall in love.
See it in person
Schedule a tour
Live availability from Tyler's calendar — pick a time and it's booked. Confirmation lands in your inbox immediately.
Straight answers
9 CASTAÑA STREET FAQs
What would the monthly payment be for 9 CASTAÑA STREET?+
With 10% down on a 30-year Conventional loan at 6%, the all-in payment lands around $67,686/mo — principal and interest, estimated property taxes, the $650/mo association fee and typical Florida insurance. The payment calculator on this page lets you switch loan type (FHA, Conventional, VA) and adjust the down payment, rate and term.
How much are the HOA fees at 9 CASTAÑA STREET?+
The association fee works out to $650 per month. Ask us for the full association documents — they spell out exactly what the fee covers.
Are pets allowed at 9 CASTAÑA STREET?+
The listing reports pets: Yes. Communities often layer on breed or weight rules — we'll verify the specifics with the association before you commit.
How does the price compare to other homes in GUAYNABO 00968?+
At $10,000,000, this home is listed about 19508% above the GUAYNABO 00968 median of $51,000. The market section on this page shows how the area is trending.
The brief
Three things that matter here
01Positioned at the premium end
$10,000,000 runs 19508% above the GUAYNABO 00968 median.
02Your own pool
A private pool — the feature Florida buyers ask for first, already in the ground and included in the price.
03Know the monthly fee
The association fee is $650/mo. That usually buys real services — verify what's covered before comparing this home against fee-free alternatives.
Keep looking
Similar homes nearby
Listing courtesy of JOEL A KATZ · Joel Katz. MLS #PR9120156.
IDX information is provided exclusively 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. Data is deemed reliable but is not guaranteed accurate by Stellar MLS.