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. This home also features an expansive finished attic space for storage! Additional upgrades include new closet doors, exterior lighting, door hardware, new landscaping, new sod, 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.