Section 647 Of Article 3. Presumptions Affecting The Burden Of Producing Evidence From California Evidence Code >> Division 5. >> Chapter 3. >> Article 3.

. The return of a process server registered pursuant to Chapter 16 (commencing with Section 22350) of Division 8 of the Business and Professions Code upon process or notice establishes a presumption, affecting the burden of producing evidence, of the facts stated in the return.