2619 S Castle Harbour Ave, Ontario, CA 91761

First time on the market in over 25 years! This beautifully updated 4 bed 3.5-bath tri-level home offers 2,106 sq ft of flexible living space in a quiet, established neighborhood. Inside, the home features a thoughtful, open layout that includes a vaulted-ceiling living room, a lower-level cozy family room with a fireplace, plus a centrally located and newly remodeled kitchen designed for connection and convenience. Upstairs, the master suite offers a private and recently remodeled en-suite bath as well as an oversized walk-in closet, while three additional bedrooms and a remodeled full bath provide flexible options for family and guests. A standout feature of this home is the fully permitted large bonus room with its own private full bathroom. This versatile space offers endless potential to suit your lifestyle and would be ideal as a game room, gym, extra guest quarters, craft space, or the ultimate man cave. Outside, you will find the inviting pool and newer Trex deck, providing the perfect setting for relaxation, entertaining, or soaking in the California sun. Whether you're hosting weekend BBQs, enjoying peaceful mornings by the water, or winding down after a busy day, this low-maintence backyard delivers year-round enjoyment with ample space for all your outdoor needs. Additional highlights include an extended driveway with space for an RV, central A/C and heating, dual-pane windows, plantation shutters, and abundant natural light throughout. Located in a family-friendly neighborhood with no HOA and just minutes from freeways, Ontario Airport, schools, and shopping - this home checks all the boxes. Don’t miss this opportunity to own a turnkey home that blends style, function, and comfort!