Sub-Customer: Address

In our company, we have multiple jobs for one customer. We like to break out each job into its own sub-customer file so we can keep track of all costs for that job in one sub-customer file. However, all of these files would be under the same "parent customer". I was wondering if there is any way to auto-sync the parent customer address/phone number/email address/etc with the sub-customer files. Since this information would be the same. I am worried that if the customer's address/phone number/email address changes, we will have to go back and change it for all of the multiple sub-customer files. Instead, it would be easier if we could change it on the parent customer file and it would automatically change on all the sub-customer files. Does anybody know if this can be done?