Rare single-story duplex in Antioch's Contra Loma neighborhood! This 3/2 and 2/1 property offers two separate units under one roof, each with a single-level layout and no stairs to manage. Both units have been refreshed in the last three years, so the major updates are already done. Unit A features hardwood floors and fresh paint, both completed in 2023, plus a new dishwasher that makes the kitchen move-in ready. Unit B was updated even more recently: new hardwood floors and fresh paint in 2026, a new stove this year, a new HVAC system in 2024, and a newer refrigerator. With this many recent upgrades, the property offers the kind of low-maintenance ownership that's hard to find in an older duplex at this price point. The 6, 936 sq ft lot gives each unit room to breathe, and generous garage space makes parking and storage simple for both households. Both units are rented out. Location is the real draw here. You're minutes from Contra Loma Regional Park and Black Diamond Mines Regional Preserve, with schools, shopping, and dining close by. Easy access to Highway 4 connects you to Concord, Walnut Creek, and the rest of the East Bay, and the Antioch BART station puts San Francisco and Oakland within reach.