🐻 California Construction Compliance Hub
California doesn't just have different rules — it has more rules, stricter rules, and higher penalties than virtually every other state. If you're a contractor working in California — especially in the Bay Area — this section is your survival guide.
Every year, out-of-state contractors enter the California market and get burned. They assume their home-state practices will work. They don't. California has its own OSHA program (Cal/OSHA), its own contractor licensing board (CSLB), mandatory DIR registration for public works, and labor laws that make contractors liable for their subcontractors' wage theft. The learning curve is steep, and the penalties for ignorance are real.
What Makes California Different
| Area | Rest of the Country | California |
|---|---|---|
| OSHA | Federal OSHA in most states | Cal/OSHA — stricter standards, lower triggers, additional programs required |
| Contractor licensing | Varies widely; some states have none | CSLB license required for any work over $500 — strictly enforced |
| Public works registration | Rarely required | DIR registration mandatory before you can even bid |
| Subcontractor liability | Generally limited | SB 727 — you're liable for your subs' wage theft |
| Overtime | Weekly only (after 40 hrs) | Daily AND weekly — over 8 hrs/day triggers OT |
| Meal & rest breaks | Federal: no requirement | 30-min meal by 5th hour, 10-min rest per 4 hrs — penalties for violations |
| Prevailing wage rates | Lock in at bid | Rates expire mid-project — must pay updated rates |
| Building permits | Typically county-level | Every city has its own process — Bay Area is notoriously fragmented |
In This Section
- Cal/OSHA vs. Federal OSHA — Heat illness prevention, IIPP requirements, permit-required work, higher penalties
- CSLB License Requirements — License classifications, application process, exam requirements, bond and insurance
- DIR Registration & Compliance — Required for any contractor on California public works
- SB 727: Subcontractor Liability — You're liable for your subs' wage violations — how to protect yourself
- Bay Area Building Departments — City-by-city permit guide for Silicon Valley contractors
- California Prevailing Wage & DIR — Rates, eCPR filing, apprenticeship requirements, DAS forms
Quick Reference: Key California Agencies
| Agency | What They Do | Website |
|---|---|---|
| CSLB | Contractor licensing and enforcement | cslb.ca.gov |
| DIR | Prevailing wage, apprenticeship, workers' comp, Cal/OSHA | dir.ca.gov |
| Cal/OSHA (DOSH) | Workplace safety enforcement | dir.ca.gov/dosh |
| DLSE | Labor standards enforcement (wage claims) | dir.ca.gov/dlse |
| DSA | Public school construction oversight | dgs.ca.gov/dsa |
| OSHPD/HCAI | Hospital and healthcare facility construction | hcai.ca.gov |
| SWRCB | Stormwater permits (SWPPP) | waterboards.ca.gov |
| Bay Area AQMD | Air quality permits | baaqmd.gov |
California Compliance Checklist
Licensing & Registration
- CSLB license current and active (check at cslb.ca.gov)
- Workers' compensation insurance or valid exemption
- Contractor bond current ($25,000 minimum; $100,000 for C-39 roofing)
- DIR PWC registration if doing public works ($400/year, renew by June 30)
- Business license in each city where you work
Safety & Labor
- Written Injury and Illness Prevention Program (IIPP) — required for ALL employers
- Heat Illness Prevention Plan — required at 80°F+
- Cal/OSHA permits for applicable work (demolition, certain trenching, carcinogen work)
- Meal and rest break policies documented and enforced
- Daily overtime tracking (California uses daily AND weekly thresholds)
Public Works (If Applicable)
- Current prevailing wage determinations with expiration dates tracked
- eCPR filing set up and current
- DAS 140/142 apprenticeship forms filed
- All subcontractors DIR-registered and verified
- Wage determinations posted at jobsite
Subcontractor Management
- Verify sub CSLB licenses before contract
- Verify sub DIR registration (public works)
- SB 727 monitoring program in place
- Sub wage and hour compliance verification process
California laws change frequently. Verify current requirements with the relevant agency before relying on any guide. Last reviewed: February 2026.