Building a Detached ADU in Stockton: How We Do It
A detached ADU is the most flexible thing you can put in a Stockton backyard, and it's also the most building. Standalone unit, own foundation, own roof, own utilities — a small independent home behind the one you already have. We're a Sacramento-based design-build crew, about 50 minutes north, and the thing that defines a build down here isn't the floor plan. It's the Delta ground under it. Here's the honest version of what that takes.
What "Detached" Really Means
California has three kinds of ADU and people mix them up constantly. There's the conversion, where you turn an existing garage or part of the house into a unit. There's the attached ADU, which shares a wall with the main home. And there's detached — a brand-new standalone building that touches nothing. New foundation, new roof system, four new exterior walls, its own everything. When somebody in Stockton tells me they want a backyard cottage, a guest house, or a self-contained place for a parent, they're describing detached even if they never use the word.
That independence is the reason to pick it. Because the unit shares no structure with your house, you decide everything from scratch — where the front door faces, which way the kitchen window looks, where the privacy lands. You're not boxed in by where a garage door used to be. On the modest lots that make up a lot of Stockton, that freedom is what lets a 600-square-foot unit feel private instead of cramped. And on a Delta lot it lets us put the building where the soil actually cooperates.














