Two matter most. Conditional permanent residence lasts two years, and the petition to remove conditions is generally filed in the ninety days immediately before the second anniversary of admission in that status. Separately, statutory adjustment of the investment amounts is provided for from 1 January 2027.
One date the investor controls, one the statute sets
Hypothetical example: Solveig is weighing a project whose construction schedule will decide whether her later petition has the evidence it needs. The removal-of-conditions window is the date to protect. It is short, it is calculated from admission as a conditional resident rather than from the original petition, and the evidence it requires is evidence about the enterprise: that the capital was invested and sustained, and that the required jobs were created or will be created within a reasonable time.
Solveig cannot manufacture those facts in the final month, so the questions to ask the project are about its own construction and hiring schedule and what happens to her petition if that schedule slips. The second date is outside anyone's control. The statute provides for adjustment of the investment amounts from the start of 2027, which makes the filing date a planning variable rather than an administrative detail.
Between the two sits the ordinary uncertainty of processing and visa availability, which is why a family should decide what they will do if the process takes twice as long as promised.