California Code, Code of Civil Procedure - CCP § 216

(a) At each court facility where jury cases are heard, the court shall provide a deliberation room or rooms for use of jurors when they have retired for deliberation.  The deliberation rooms shall be designed to minimize unwarranted intrusions by other persons in the court facility, shall have suitable furnishings, equipment, and supplies, and shall also have restroom accommodations for male and female jurors.

(b) Unless authorized by the jury commissioner, jury assembly facilities shall be restricted to use by jurors and jury commissioner staff.