Welcome to this beautifully updated home on Cornell Ave in Fullerton, where thoughtful upgrades and exceptional indoor-outdoor living come together seamlessly. Be sure to get through the pics to see the amazing backyard. A stunning approx. 400 sq ft addition transformed the heart of the home into a massive open-concept kitchen, dining, and family roomperfect for both everyday living and entertaining. The chef’s kitchen is outfitted with a full suite of high-end appliances, including a French door refrigerator with custom ice ball feature, Trivection oven, 5-burner cooktop with downdraft ventilation, newer dishwasher and microwave w/ convection feature, and a 50+ bottle wine storage cellar. A large center island, granite countertops, abundant cabinetry, and an oversized walk-in pantry. An elegant formal living room with fireplace is just off the entry, while the family room is enhanced with a 7.1 Dolby surround sound system and additional exterior speakers to the backyard patiocreating a true entertainment experience inside and out. Add to that, all rooms are prewired through a central box located in the hall closet. Both bathrooms have been tastefully updated, including a spa-inspired bath featuring a separate soaking tub, walk-in shower, and dual vanities. Additional upgrades include updated lighting throughout, refreshed interior and exterior doors, and newer washer and dryer. The partially finished garage offers incredible flexibility, complete with full insulation and its own split AC/heat systemideal for a home gym, office, or potential ADU conversion. Even the upgraded 200 amp panel has been modified with an interlock transfer, for the potential use with a generator in case of any power failure. Step through the double glass doors to the outside, to an exceptional backyard retreat. Enjoy a sparkling custom pool and spa with Baja shelf, a large covered patio perfect for outdoor dining and entertaining, and a dramatic waterfall feature wall. The space is further complemented by a premium Weber Summit BBQ and a custom cold plunge therapy tub, offering a luxury outdoor lifestyle experience. Many of the backyard features, along with select interior furnishings and dcor, may be available for inclusionproviding a rare opportunity for a truly turnkey transition. This home offers the perfect blend of modern upgrades, functional space, and standout outdoor living in one of Fullerton’s most desirable neighborhoods.