Tucked beyond a long private drive and set on nearly an acre of grounds, 18571 Buena Vista is a rare offering that combines privacy, scale, and refined updates in the heart of Yorba Linda. This stately 4-bedroom, 3-bathroom residence spans approximately 3,096 square feet and includes a generous upstairs bonus room with a wet bar - perfect for a media lounge, game room, or multi-functional retreat. Designed with both elegance and livability in mind, the home welcomes you with a dramatic two-story entry, vaulted ceilings, and a sweeping curved staircase. Thoughtful 2025 upgrades include a full interior and exterior repaint, wide-plank luxury vinyl flooring, carpet, upgraded baseboards, and designer lighting throughout. The kitchen has been stylishly refreshed with brand-new stainless steel appliances, tile backsplash, updated hardware, and fixtures. Bathrooms feature new mirrors, faucets, lighting, and finish details, creating a clean, cohesive aesthetic throughout. Additional upgrades include new closet doors and hardware, exterior lighting, fresh landscaping, and termite clearance for peace of mind. The expansive .946-acre lot offers exceptional potential for outdoor living- whether you envision a custom pool, sport court, ADU, or tranquil garden spaces. Rarely does a property offer this blend of seclusion, versatility, and move-in-ready condition.