The investor's spouse and unmarried children under twenty-one may obtain conditional permanent residence, subject to the Child Status Protection Act's age calculation. Marriage disqualifies a child, while turning twenty-one does not necessarily do so because CSPA may preserve eligibility.
An immigrant route removes the work restrictions
The practical difference from the temporary categories is large: conditional residents may work and study without any separate authorization, so a spouse is not dependent on anyone's status for the right to take a job, and a child of eighteen may work while studying. The limits are age and marital status, measured against dates rather than intentions. Statutory age-out protection can subtract processing time from a child's age in some circumstances, but it is a calculation with conditions attached rather than a promise, and it should never be the basis of a plan. Record every date of birth before anything else is agreed and build the schedule around the earliest twenty-first birthday. An adult child needs an independent route, considered separately and on his own facts.
Hypothetical example: an investor in an artisan pasta factory has a spouse and a child who will turn twenty-one while the family is still arranging the investment. The first review should produce a dated family chart that separates relationship evidence, the immigration stage, and each person's age. Passports, marriage records, birth certificates, and the filing receipt settle different questions and should be kept together. Sequence the capital and petition work with the age calculation rather than assuming an informal family plan controls it. A common mistake is treating a child's school enrollment or financial dependence as a substitute for the statutory age rules. If a deadline is close, the family needs timely individualized advice before relying on derivative inclusion, because an investment choice cannot correct a missed family-status requirement later.