Ideally situated just off Ventura Boulevard, this striking modern residence blends transitional architecture with a flawless fusion of smooth stucco, rich exotic wood, and expansive glass walls all privately nestled behind lush hedges in a tranquil South of the Boulevard enclave. Step into a dramatic entryway with soaring ceilings, setting the tone for the thoughtfully curated interiors where open-concept living flows seamlessly into the outdoors. Beyond the foyer, a sophisticated formal living room with custom built-ins leads to a state-of-the-art home theater perfect for movie nights or game day gatherings. On the main level, a private guest or maid's suite with an en-suite bath adds flexibility, alongside a stylish powder room for visitors. The elegant formal dining room connects effortlessly to a warm and inviting family room, complete with designer built-ins, a 100-bottle wine bar, a contemporary wood-clad fireplace, and expansive glass pocket doors that disappear to reveal the breathtaking backyard oasis. The chef's kitchen is a showstopper, outfitted with a waterfall island, sleek lacquer cabinetry, premium built-in Miele appliances, a sunny breakfast nook overlooking the grounds, and a walk-in pantry. A butler's pantry provides convenient access to the dining room ideal for entertaining with ease. Upstairs, a versatile teen lounge or executive office opens to an extraordinary wraparound terrace with panoramic views of the Santa Susana Mountains. Four luxurious bedroom suites await, including a spectacular primary retreat featuring a fireplace, built-in bar and fridge, private lounge, oversized walk-in closet with island, and a spa-inspired bathroom with dual vanities, lighted mirror, soaking tub, and oversized shower. A private balcony overlooks the backyard the perfect spot to greet the morning or unwind at sunset. Designed for entertaining and everyday luxury, the backyard features a covered outdoor living area, sparkling pool and spa, glass-encased fire pit, and a sleek outdoor kitchen with built-in BBQ. A custom sports court invites friendly competition, while a newly updated ADU with a private entrance and en-suite bath provides ideal accommodations for guests, extended family, or use as an office, studio or even a gym. Smart home features include integrated sound, multi-zone Nest climate control, security cameras, electric blinds and curtains throughout the entire house and full home automation. Additional highlights include a large motor court with ample parking and a low-maintenance turf area perfect for soccer, mini golf, or outdoor relaxation. Don't miss the opportunity to experience the exceptional lifestyle offered at 4854 Alonzo Avenue where modern design, comfort, and convenience converge in one unforgettable home.