Title 21 - Public Works
- Division 1 - Department of General Services (§§ 1 — 1400)
- Division 2 - Department of Transportation (§§ 1401.1 — 2658)
- Division 2.5 - Division of Aeronautics (Department of Transportation) (§§ 3525 — 5090)
- Division 3 - California State Transportation Agency (§§ 6600 — 7711)
- Division 4 - California Transportation Commission (§§ 8001 — 8207)
- Division 5 - Earthquake Emergency and Seismic Retrofit Permit Review Panel (§§ 9100 — 9211)
- Division 6 - California High-Speed Rail Authority (§§ 10000 — 10000.13)