Section 1800 Of Article 3. Agencies And Branch Offices From California Financial Code >> Division 1.1. >> Chapter 20. >> Article 3.

. (a) No foreign (other nation) bank shall transact business in this state except at an agency or branch office that it is licensed to maintain and at which it is permitted by this chapter to transact the business transacted.
  (b) Subdivision (a) shall not be deemed to prohibit:
  (1) Any foreign (other nation) bank that maintains a federal agency or federal branch in this state from transacting at the federal agency or federal branch any business that it may be authorized to transact under applicable federal laws and regulations;
  (2) Any foreign (other nation) bank from carrying on the activities described in subdivision (d) of Section 191 of the Corporations Code;
  (3) Any foreign (other nation) bank that does not maintain an agency or branch office from making in this state loans secured by liens on real property located in this state; or
  (4) Any foreign (other nation) bank that does not maintain an agency or branch office from transacting trust business as permitted under Section 1555.
  (c) For purposes of subdivision (a), no foreign (other nation) bank shall be deemed to be transacting business in this state merely because a majority-owned subsidiary transacts business in this state.