This Option series home was customized to meet the practical needs of the client and site. This split level prefab home contains an attached ADU at the lower basement level along with a below grade patio and window wells to allow natural day lighting. The enlarged waterproof deck allows a stronger connection with the expansive backyard. Other features include a simple shed roof oriented to the south, which allows for solar roof panels. The resulting space is one that creates comfortable and private living conditions for both the main and ADU residence.