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SAN ANTONIO HEIGHTS: *. ELEGANT CUSTOM ESTATE: Secluded on Nearly an Acre - PLUS a Bonus Lot, * MAIN RESIDENCE: 3,797 sq ft of luxurious, well-designed living space * LOT SIZE: .97 acre plus adjoining 10,500 sq ft lot with separate APN (#1003-121-24-0000) * BEDROOMS/BATHROOMS: 4 spacious bedrooms & 3 beautifully updated bathrooms *. BONUS ROOMS: * Dedicated library, home office, expansive laundry room & wine cellar *. GOURMET KITCHEN: Remodeled with quartz countertops, high-end appliances, custom cabinetry – opens to the Great Room * ENTERTAINER'S DREAM: *. Formal living & dining with dramatic vaulted ceilings & floor-to-ceiling fireplace * Casual dining & open-concept family space *. Elegant Finishes: Rich wood floors, 4 fireplaces, vaulted ceilings, and designer touches throughout *. BAR: Offers plenty of open entertainment space in the greatroom * STUNNING OUTDOOR OASIS: *. Resort-style pool with waterfall *. Built-in outdoor kitchen & gazebo *. Expansive stone patio with lush landscaping & sweeping views that enhance the indoors *. Library Retreat: Built-in wood bookshelves, cozy fireplace & vintage tin ceiling – a showstopper *. VERSATILE ACERAGE: *. Gated access to rear grounds – perfect for RV garage, horse corrals, or potential ADU * Currently offers RV parking with RV hookups *. Additional lot currently features an avocado orchard – endless possibilities! *. PRIME LOCATION: Tucked away in the serene foothills of San Antonio Heights, yet minutes to Upland amenities * A rare opportunity to own a secluded, custom-built estate with room to grow, entertain, and enjoy Southern California living at its best!
Listing agent: FREDRICK STEINER DRE #00497804 fredsteinerjr@gmail.com, Listing office: Coldwell Banker Kivett-Teeters
MLS data updated 10/19/2026, 9:10:15 AM PT
Source: CRMLS, MLS #: IV25066059
Belmont insights
Compare recorded home prices, same-type ZIP sales and mortgage rates.
Sep 25, 2025
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
$1,808,484Closed sale · Sep 25, 2025ZIP 91784 · Sep 2025
No monthly averageAt least 3 eligible sales in this month are required.30-year fixed mortgage benchmark
No weekly rateNo published rate within 7 days of this date.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.