Nestled in Union City's Historic Alvarado District, this stunning home blends historic charm with modern updates. Steps from Old Alvarado Park and Cesar Chavez Park, it's also just half a mile from Union Landing shopping center and near the 880 Freeway for easy commuting. Renovated in 2018, the home features designer kitchen cabinets, granite countertops, stainless-steel appliances, a new water heater (2019), Tesla EV charger (2022), and a remodeled laundry room (2024). The open-concept living and dining area is bright and inviting, with hardwood floors throughout. The eat-in kitchen flows into a sunroom leading to the backyard and laundry room. Adjacent are an office and en-suite main bedroom. A cozy family room connects to two bedrooms (one en-suite). Another full bathroom is conveniently located just off the dining area. Upstairs, a fourth bedroom adds even more versatility to the home. The backyard includes paver landscaping and a newly built 469 sq. ft. ADU (2023) with a bedroom, bathroom, eat-in full kitchen, and front deck -- ideal for guests, extended family, or rental income. A separate structure houses 2nd laundry room. With its prime location, modern amenities, and additional ADU, 30971 Watkins Street is ideal for multi-generational living or investment opportunities.