THE BEST OF HILLSBOROUGH! 815 Crystal Springs Rd presents an exceptional blend of luxury, privacy, & resort-style living in one of Hillsborough's most desirable settings. Thoughtfully remodeled in 2016, this 3,345 sq ft residence sits on an expansive 19,598 sq ft lot and offers 4 bedrooms and 3.5 baths, including a beautifully appointed pool house, versatile studio/bonus room, and finished basement. A gated entry opens to a generous paver motor court and oversized finished 2-car garage with EV charging, sink, and refrigerator. Inside, an open-concept layout showcases a formal living room with fireplace, dining area, & a chef's kitchen is with a six-burner gas range, built-in refrigerator, wine refrigeration, and a center island with prep sink & breakfast bar, and family room with wet bar and fireplace. A private office with separate entrance adds flexibility. The covered outdoor living area features a full kitchen, fireplace, TV, heaters, and built-in speakers for year-round enjoyment. The primary suite offers vaulted ceilings, dual closets, and a spa-like bath with heated floors. Grounds include lawn, gardens, fruit trees, peaceful stream, redwoods, and a pool/spa retreat. Close to downtown San Mateo and many top schools. TOO MANY DETAILS TO LIST HERE, a must see so don't wait!