Introducing 540 Lost Oak, the epitome of custom luxury living in Escondido, boasting a main residence spanning 6,231 square feet, a detached 2bd/1ba ADU, and sprawling 3.51 acres of usable land, awaiting your finishing touches. Meticulously designed, this property offers an incomparable multi-generational haven with stunning panoramic views, while the intentionally remodeled ADU provides flexible living arrangements for extended family or rental income. Step through the wrought iron custom doors into a formal foyer and elegant wrap staircase that is the centerpiece of the estate. To your right, a spacious dining room with a book-matched fireplace and picture windows sets the stage for the highest quality of entertainment. Take the adjacent hallway to a spacious laundry room - equipped with ample storage & sink - a gorgeous quartz adorned full bathroom, a main floor ensuite bedroom, two other main floor bedrooms, & a convenient powder room right before the access to the attached 4-car garage. To the left of the foyer, you'll find a stunning chef's kitchen straight out of the pages of Architectural Digest. This inspiring kitchen provides space for any party size & offers abundant storage & cabinet space, brand new stainless steel appliances, a deep gold-finished sink, & views of the impressive lot. The grand room with another book-matched fireplace & soaring ceilings offers sweeping sunset views unfolding through accordion glass sliders, where you can enjoy rolling hills & majestic mountains. The outdoor space has multiple points of access, including a convenient recreational room that offers a shower plus waterproof LVP flooring to add convenience to your pool days. Outside, the glistening pool with a water slide & tranquil jacuzzi beckon for moments of relaxation & leisure. The oversized, luxurious, primary bedroom welcomes you upstairs, featuring a 3rd gorgeously book-matched fireplace, spa-like ensuite, & a walk-in boutique closet, creating the ultimate retreat. Generously appointed bedrooms, most with custom ensuites, seamlessly intertwine luxury & convenience. A spacious media room awaits on the third floor, perfect for transforming into a dedicated home theater or entertainment hub, while a designated workspace on the second floor awaits your transformation into a home office or at-home gym. A detached garage offers even more endless potential for additional living space or customized usage. 540 Lost Oak isn't just a home; it's a statement of opulence & refinement, offering a lifestyle of unparalleled serenity. Welcome to your new chapter of elegance & sophistication.