It is measured in years rather than months. Preparing the source-of-funds file commonly takes several months, adjudication of the investor petition follows, then a two-year conditional residence period, then Form I-829 filed generally within the ninety days before the second anniversary.
Three long stages, and the file has to survive all of them
The first stage is preparation, and its length depends almost entirely on how quickly Terrence can retrieve historical company and property records. The second is adjudication, which varies and should be checked against current published processing information rather than assumed. The third begins on admission or approval of adjustment: two years of conditional permanent residence during which the investment must remain at risk and the jobs must be created, ending with Form I-829, generally filed in the ninety days before the second anniversary of obtaining conditional residence.
Two consequences follow for planning. Children's ages change during that span, and so can program terms, including the statutory adjustment beginning January 1, 2027, so the applicable figures should be re-verified rather than carried forward from an early conversation.