A rare opportunity to own a stunning Mid-Century Modern architectural residence in the heart of Brentwood Glen, one of Los Angeles' most coveted neighborhoods. Formerly the home of legendary music executive and Rock & Roll Hall of Fame inductee Lenny Waronker, this beautifully preserved steel-beam and board formed concrete residence offers a compelling blend of architectural significance, gallery-like volumes, and effortless California living. Set behind lush, mature landscaping, the 4-bedroom, 4-bath home is filled with natural light and designed for seamless indoor-outdoor living. The dramatic living room features soaring ceilings, a striking fireplace, and an open mezzanine that overlooks the main entertaining space. Just beyond, a private landscaped courtyard creates a serene retreat for morning coffee or intimate evening gatherings. The warm, inviting kitchen is appointed with rich wood cabinetry, glass fronts, a large center island, stainless steel appliances, double ovens, a gas cooktop, and abundant storage. A powder room and dedicated laundry room complete the main level. Upstairs, the primary suite offers a peaceful sanctuary with an ensuite bath, while three additional bedrooms and two bathrooms provide ample space for family or guests. A second living area with its own fireplace adds flexibility for media, work, or relaxation. A sophisticated paneled office completes the home's thoughtful design. The backyard is a true oasis, featuring an inviting lap pool and generous lounging areas surrounded by greenery and nature. Throughout the home, steel framing, expansive glass, and beautifully preserved wood architectural details create a timeless collector's atmosphere, with exceptional art walls and gallery-quality presentation spaces.Ideally located just minutes from Brentwood Village, Sunset Boulevard, the 405, The Getty, UCLA, and some of Los Angeles' finest dining and shopping, this cherished Brentwood Glen residence is a rare architectural offering and a true preserved masterpiece.