Does my son need to apply for a separate visa when he turns 18 if I obtain an elective residence visa of Italy?

I understand that if I obtain an elective residence visa of Italy, my 16-year-old son will be able to join me by applying for a family visa. How long is this visa valid for? Does he lose his eligibility to live in Italy when he turns 18?

Answers

On Alessia Ajelli answered:

As for your 16-year-old child, he can apply as an accompanying family member together with your elective residence visa application. In this case, the availability of financial resources to be demonstrated must be increased by 5%. His visa and residence permit will have the same validity of yours, so one year, renewable. When he turns 18 years old, he will still be able to renew his permit for family reasons.

On Marco Mazzeschi answered:

As for your 16-year-old child, he can apply as an accompanying family member together with your elective residence visa application. In this case, the availability of financial resources to be demonstrated must be increased by 5%. His visa and residence permit will have the same validity of yours, so one year, renewable. When he turns 18 years old, he will still be able to renew his permit for family reasons.

On Maria Teresa Vanacore answered:

As for your 16-year-old child, he can apply as an accompanying family member together with your elective residence visa application. In this case, the availability of financial resources to be demonstrated must be increased by 5%. His visa and residence permit will have the same validity of yours, so one year, renewable. When he turns 18 years old, he will still be able to renew his permit for family reasons.