21350 Casino Ridge RD, Yorba Linda, CA 92887 (MLS # OC26202838)

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PRICE $4,200,000 dsIDX morgage calculator
BEDS 6
BATHS 5.5
HOME SIZE 5,546 sqft
LOT SIZE 2.97 ac
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A Rare Private Estate in the Hills of Yorba Linda. Privately positioned behind an automatic gated entrance in the prestigious Mt. San Antonio Estates, this extraordinary 2.97-acre horse-zoned estate offers an exceptional combination of privacy, scale, panoramic views, and resort-style living. Surrounded by beautifully manicured grounds, the property enjoys breathtaking, unobstructed vistas stretching toward Catalina Island, sparkling city lights, and the Chino Hills. Designed as a secluded retreat, the estate features lush landscaping, two tranquil koi ponds, a custom rock pool and spa, decorative fountain, and expansive outdoor spaces that create an atmosphere of serenity and exclusivity. The impressive 5,546-square-foot residence has been thoughtfully refreshed with new interior paint, and beautifully Alcatraz Brazilian Cherry hardwood flooring. Offering 5 bedrooms and 5.5 bathrooms, the home provides an ideal balance of elegant formal spaces and comfortable everyday living. The sophisticated floor plan includes a private office, dedicated media room, spacious bonus room, formal living and dining rooms, and an inviting family room, providing exceptional flexibility for entertaining, working from home, and multi-generational living. Additional enhancements include eight individually controlled temperature zones, reflecting the home's attention to comfort and functionality throughout. Set on nearly three acres with equestrian zoning, impressive grounds, resort-style amenities, and commanding views, this remarkable estate presents a rare opportunity to enjoy privacy, luxury, and expansive Southern California living in one of Yorba Linda's most desirable hillside communities. An exceptional property for the discerning buyer seeking acreage, privacy, views, and timeless estate living.

DAYS ON MARKET 10 LAST UPDATED 9/28/2026
TRACT Mount San Antonio (MTSA) YEAR BUILT 2004
COMMUNITY 85 - Yorba Linda GARAGE SPACES 4.0
COUNTY Orange STATUS Active
PROPERTY TYPE(S) Single Family

SCHOOLS
High School Yorba Linda


ADDITIONAL DETAILS
AIR Central Air
AIR CONDITIONING Yes
APPLIANCES Built-In Range, Dishwasher, Microwave, Range Hood
AREA 85 - Yorba Linda
EXTERIOR Balcony, Barbecue
FIREPLACE Yes
GARAGE Attached Garage, Yes
HEAT Central
HOA DUES 460|Monthly
INTERIOR Ceiling Fan(s), High Ceilings, Pantry, Storage
LOT 2.971 acre(s)
LOT DIMENSIONS 129417
PARKING Attached, Driveway, Garage, Paved
POOL Yes
POOL DESCRIPTION Private, Heated, In Ground
SEWER Public Sewer
STORIES 2
SUBDIVISION Mount San Antonio (MTSA)
VIEW Yes
VIEW DESCRIPTION City Lights, Hills, Mountain(s), Panoramic
WATER Public
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Listed with IRES Partners Inc.

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Based on information from California Regional Multiple Listing Service, Inc. as of 10/4/26 11:18 PM PDT and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information

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