Question juridique clé
Whether the appellant's domicile was in Solothurn or remained in A./SG as a weekly resident.
Solution extraite
The appellant's center of life and domicile were in Solothurn from 1 October 2010; the alleged weekly return to A./SG was not proven with sufficient intensity or regularity.
Motifs extraits
For unmarried persons, the family-home presumption can be rebutted only by showing regular weekly returns and sufficiently strong family, private, and social ties at the former home. The appellant's limited ties to A./SG, modest support of his mother, and weak social connections did not outweigh the work-location ties.