public class HouseHolds
{
    public string Code { get; set; }
    public List<HouseHoldBeneficiaries> HouseHoldBeneficiaries { get; set; }
}

public class HouseHoldBeneficiaries
{
    public Guid HouseHoldId { get; set; }
    public Guid BeneficiaryId { get; set; }
    public int HouseHoldRelationShipId { get; set; }
}