If the filing location for your application/petition is the California Service Center then you should send it to this new address in Tustin, Ca. USCIS explained in an email that this move is streamline processes by concentrating operations in this new location. They promise that, “[t]he California Service Center will continue to provide prompt and efficient service in processing requests for immigration benefits.” For more information you should visit uscis.gov.

Refer to form filing address pages on uscis.gov to find the specific address information, including suite numbers, you should use depending on which form you are submitting.