Welcome to 9760 Lemon Avenue, an exceptional gated estate in the heart of prestigious Alta Loma offering 4,759 square feet of total living space between a beautifully renovated main residence and a detached ADU. Set on an expansive lot with breathtaking San Gabriel Mountain views, this one-of-a-kind property blends luxury, versatility, and modern convenience. A private gated entrance and sweeping circular driveway lead to the stunning 3,240 sq. ft. main home, featuring 5 bedrooms and 3 bathrooms. Inside, soaring ceilings, engineered wood flooring, designer lighting, and an open-concept layout create an inviting atmosphere. The chef's kitchen is equipped with custom wood cabinetry, an oversized waterfall quartz island, professional-grade ZLINE appliances, double farmhouse sinks, built-in double ovens, a pot filler, and generous storage, making it ideal for entertaining. The luxurious primary suite offers direct backyard access, a spa-inspired bathroom with a freestanding soaking tub, oversized walk-in shower, dual vanities, and a spacious custom walk-in closet. Adding incredible value is the detached 1,519 sq. ft. ADU, thoughtfully converted from a workshop into a beautifully finished 3-bedroom, 2-bath residence with its own separate address. Perfect for multi-generational living, guests, a home office, or rental income, this additional residence offers endless possibilities. Built for today's lifestyle, the property features paid solar, a fully integrated smart home system, and Wi-Fi connectivity throughout for seamless control of compatible home automation features. Step outside to your private backyard retreat featuring a sparkling pool and spa, expansive covered patio, outdoor kitchen, lush landscaping, and multiple entertaining areas-all set against the stunning San Gabriel Mountain backdrop. Rarely does a property combine luxury, flexibility, and income potential so effortlessly. Whether you're looking for a forever home or a multi-generational estate, 9760 Lemon Avenue delivers an exceptional lifestyle in one of Alta Loma's most desirable neighborhoods.