No. Assess the actual relationship, relevant dates and any applicable CSPA issue.
Use the record for what it proves
Filing does not automatically freeze age. A readable document may support an analysis without determining the family’s full immigration eligibility.
Unmarried children under twenty-one may accompany the investor as derivatives, and age-protection rules can preserve eligibility for a child who turns twenty-one while the petition is pending, depending on filing and visa-availability dates. For a child approaching an age threshold, obtain an individual assessment of the applicable dates and protections rather than assuming that the property sale or transfer freezes age. Marital status is simpler and harsher: a married child is not a derivative, whatever their age, and marriage during the process removes eligibility that existed at the start. Age is assessed under the rules that govern it rather than on the day the family moves, and the Child Status Protection Act can preserve eligibility in some circumstances, so a child approaching 21 during a long queue needs specific advice rather than an assumption.