SIGNIFICANT PRICE IMPROVEMENT! Now the lowest-priced home of its size in Grand Park! Welcome to 3147 E Yellowstone Dr, a beautifully maintained two-story home in the desirable Grand Park Community of Ontario Ranch. This 4-bedroom, 3-bathroom home offers 2,496 sq ft on a generous 4,092 sq ft lot, PLUS a separate office/den (not counted as a bedroom) for extra flex space. Downstairs living made easy: a guest bedroom and full bath on the main floor mean no stairs for guests, in-laws, or multigenerational living. Steps away, a private office with a glass-door entry opens right onto the living room — work from home without disappearing from it. Glance up and see the kids, greet guests as they arrive, or step straight from a call into dinner prep. The kitchen, dining, and family room flow around a long island, and motorized shades add effortless light and temperature control. Upstairs, a bonus desk nook adds a second work spot, and the primary suite offers pool and park views, dual vanities, and a large walk-in closet, plus 3 more bedrooms, a full bath, and a laundry room with ample storage. Outside, a covered awning and low-maintenance turf back up to no rear neighbors for added privacy. A true pride-of-ownership home — well cared for and move-in ready. Enjoy community pool, spa, clubhouse, and playground access, plus easy reach to the 60, 15, 91, and 71 Freeways, Costco, and 99 Ranch Market. One of Ontario Ranch's most sought-after communities — now at a price that won't last.