Redwood ADU is a Sacramento-based design/build ADU contractor completing over 70% of work in-house — meaning the same team that designs your project digs the foundation, runs the plumbing, and frames the walls. Based in Sacramento 95817, they specialize in detached ADUs, attached ADUs, garage conversions, kitchen and bath remodels, and electrical panel upgrades. Their portfolio includes a Craftsman 2-story duplex ADU with garage, a 1,350 sq ft 3-bed/2-bath new construction that rented within one week of completion, and age-in-place designs for grandparents. They offer both custom design and Sacramento City and County pre-approved plans for faster permitting. Their YouTube channel documents real builds from foundation pour to open house — rare transparency in a market full of contractors who hide their process.