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"MAGNUM OPUS" Designed to Inspire. Nestled within the prestigious guard-gated community of Hidden Hills, "Magnum Opus" is a rare architectural estate where contemporary design, organic materials, and the beauty of nature exist in perfect harmony. Encompassing 13,832 SF - including 11,231 SF of interior living - this newly completed masterpiece rests on nearly two private acres. The majestic canopy of mature trees and tranquil mountain vistas capture the essence of California's indoor-outdoor lifestyle at its finest.A dramatic arrival introduces soaring vaulted ceilings, clean architectural lines, and walls of glass that bathe the interiors in natural light. Rich white oak, hand-selected natural stone, artisan fireplaces, and warm hardwood flooring create an atmosphere that is both sophisticated and inviting. The formal living room is anchored by a sculptural stone fireplace and framed by expansive picture windows, 10-foot sliding glass doors, and exposed white oak beams. At the heart of the home, the expansive great room opens effortlessly to a grand covered veranda, seamlessly connecting the primary living spaces with the estate's theater, fitness studio, spa, and outdoor entertaining areas. Privately situated upstairs, the extraordinary primary suite is a true sanctuary, opening to a fully covered terrace with sweeping mountain views. A custom marble fireplace and white oak built-in cabinets complement the serene retreat, while the spa-inspired bath showcases exquisite natural stone, an oversized walk-in shower with steam, a freestanding soaking tub, dual water closets, marble makeup vanity, and an impressive boutique-style dressing room. The resort-caliber grounds are designed for both grand-scale entertaining and peaceful everyday living. Surrounded by lush landscaping, mature trees, and expansive natural lawns, the estate features a spectacular resort pool with dual sun-lounge shelves, an infinity-edge spa cascading over a marble waterfall, and an expansive covered outdoor pavilion complete with a retractable entertainment display, kitchen, dining area, and full-service bar. Every detail has been thoughtfully curated to create an immersive connection to the surrounding landscape from every view in the home. Completing the estate is a showroom caliber four-car garage offering refined accommodations for an exceptional automobile collection. "Magnum Opus" is more than a residence. It is a singular expression of architecture, designer craftsmanship, and California luxury at its finest.
Listing agent: Spencer Gordon DRE #02215099 spencer@ascentestates.com, Listing office: Compass
MLS data updated 10/16/2026, 7:01:06 PM PT
Source: CRMLS, MLS #: 26858161
Belmont insights
Compare recorded home prices, same-type ZIP sales and mortgage rates.
Sep 17, 2026
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
$19,995,000Asking price recorded · Sep 17, 2026ZIP 91302 · Sep 2026
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.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.