There are two stages in the adoption process: pre-placement and post-placement. Placement is when the child enters your home, pre-placement describes the time before and post-placement the time after. There is a pre-placement waiting period for all adoptions. The time frame, like the cost, varies with the type of child being adopted. With a completed homestudy in hand, the process to adopt a child with special needs can often proceed quickly and be completed within a few months. The wait is typically between two and seven years for a healthy infant.After placement, your agency will have to supervise your family for a legally-mandated length of time before finalization can occur. Typically this post-placement time period will be no less than six months from the time of placement.