Prior to January 1, 1995, use of State Plane Coordinates for new projects may be based either on CCS27 or CCS83. On or after January 1, 1995, when State Plane Coordinates are used on new surveys and new mapping projects, the use shall be limited to CCS83. However, this section does not preclude a survey from retracement of a CCS27 survey. After January 1 2025, new surveys and mapping projects may be based upon CCS2022.
Ca. Pub. Res. Code § 8817