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Behind gates and perched on a private knoll with 360 views of the San Gabriel Valley sits the majestic 'Pyrenees Castle,' built in 1925 by Sylvester Dupuy as a replica of a chateau he admired in France during his childhood. The largest privately-owned property in the area, the Castle sits on just over 2.5 acres, walled and gated, comprised of multiple gardens and mature trees. The impressive driveway leads to a motor court with fountain ushering you to the main residence. A grand foyer serves as the center point for the two wings of the Castle, each a mirror image of the other. Multiple original architectural details abound, including four turrets, a stately wood-paneled living room and dining room with beamed ceilings, crystal chandeliers, original inlaid hardwood flooring and hand-painted stenciling. With multiple entertaining spaces in addition to the 10 bedrooms/11 bathrooms, opportunities abound for ways to configure the home for today's modern living. The separate 4 garages have living area above them with 2 bedrooms/2 bathrooms, bringing the total count to 12 bedrooms/13 bathrooms. With upgrades to the infrastructure, roof, bathrooms, plumbing, kitchen and so much more, this home presents a true opportunity to own a one-of-a-kind, trophy estate.
Listing agent: Timothy Durkovic DRE #01923778 tim@thedurkovicgroup.com, Listing office: Douglas Elliman of California, Inc.
MLS data updated 11/2/2026, 4:30:02 AM PT
Source: CRMLS, MLS #: P0-820001471
Belmont insights
Compare recorded home prices, same-type ZIP sales and mortgage rates.
May 4, 2021
Prices use the left axis; mortgage rates use the right. Hover, tap, or focus the chart and use the arrow keys. Red SOLD badges mark recorded sales.
This home · nearest recorded event
No recordNo property-price record in this range.ZIP 91803 · Nov 2026
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No weekly rateNo published rate within 7 days of this date.No recorded sales in this range. Select All available for older records; missing records do not mean the home never sold.
ZIP averages use publicly displayable closed sales from our licensed MLS feed, matched to the same ZIP and exact property type. Months with fewer than 3 sales are omitted; the current month is incomplete. Lines connect available monthly observations across gaps and do not represent measured prices in missing months. These averages are not adjusted for size, condition, or location within the ZIP, and are not an appraisal. Feed coverage may not include every sale. All available shows the available home and ZIP history, with mortgage rates over the same dates.
Mortgage benchmark: Freddie Mac Primary Mortgage Market Survey®. © Freddie Mac. Weekly national 30-year fixed rates, not APRs or a loan quote. Actual terms vary. Methodology changed in November 2022. The chart does not establish that interest-rate changes caused a home’s price changes.
Lines connect recorded asking and sale prices. They are visual guides, not estimates of the home’s value between those dates.
No earlier records were returned by our current sources. This does not mean the home has never sold.
MLS records may be incomplete. Earlier asking prices are not sale prices.