This depends on how prepared and how many resources an Organization has to dedicate to the project. The first time through, usually a readiness assessment would be performed, and then a SOC 1 Type 1, and take anywhere from 2 to 3 months. However, there are situations where it may take 6 to 12 months should an Organization not have the resources or sufficient priority assigned.
A Type 2 report takes about 2 months to complete, but, it may take a little longer during the first audit and become more efficient every year thereafter.