Great Improved Price! Private Gated Estate with New ADU in coveted Sleepy Hollow, San Anselmo. This gated, sun-drenched estate offers the beauty and comfort of sprawling lawns, lush landscaping, timeless architecture, serene privacy, and resort-style living on over an ACRE. The single-level main residence wraps around a stunning tiled interior courtyard, blending classic hacienda elegance with modern comfort. Soaring custom ceilings, arched hallways, and an abundance of natural light create a sense of warmth and grandeur throughout. The expansive primary suite features a private balcony and direct courtyard access with sweeping views of the hills, gardens, and sparkling pool. The stunning gourmet kitchen, opens to a large family room with glass doors that lead to the courtyard, perfect for indoor/outdoor living and effortless entertaining under the stars. A newly built, approx. 660 sq ft 1BD/1BA ADU with a kitchenette offers the ideal guest house, au pair quarters, office, or rental elevating its flexibility and value with nearby Top-rated schools, hiking trails, and the vibrant shops and restaurants of San Anselmo and Fairfax. This is a rare opportunity to own a turnkey estate with unmatched lifestyle appeal offered at an exceptional value!