Issuance or extension of a residence permit for. Spouses or life partners of the same sex of foreign residents with a valid residence title,; Under-age, unmarried children of foreign residents with a valid residence title,; Parents of foreign children with a residence title pursuant to § 23 para. 4, § 25 para. 1, § 25 para. 2 sentence 1, 1st alternative or § 26 para. 3, if no parent with ... plus