No. Each person’s relationship, age and relevant dates require individual assessment.
Use the actual household record
Visa availability and any CSPA issue are not decided by another family’s result. Investing or filing does not automatically freeze a child’s age.
Eligible spouses and unmarried children under 21 may have derivative cases, with applicable CSPA assessment; joint asset ownership does not itself establish immigration eligibility or work permission. Derivative status covers the spouse and unmarried children under twenty-one, and statutory age protections exist whose operation depends on filing dates and on visa availability rather than on a birthday alone. Adding a spouse and unmarried children under 21 as derivatives creates neither another ten-job obligation nor a second capital threshold, although age and relationship evidence need individual review. A derivative's eligibility is assessed at points in the process rather than continuously, and a child's position can change with the passage of time in a way a spouse's does not, which makes the calendar part of the analysis rather than an administrative afterthought.