The first hour at a trauma scene
- If anyone is hurt or in danger, call 911 before anything else.
- Stay out until whoever responded says the scene is released, and keep children and pets away from it.
- A gas smell means leaving and calling 911, then your gas utility from outside; the numbers are in the gas note below.
- Leave blood and other body fluids for the cleanup crew.
- Phone your insurer to learn what the policy covers and what paperwork it needs. Coverage questions go to CDI's consumer line at 1-800-927-4357.
- Next, request a company on the form and ask about the crew's training and its handling of waste.
What CSLB's class list covers
CSLB's classification list has A, B, B-2 and C classes plus two certifications, asbestos and hazardous substance removal, and no trauma or biohazard class. The hazardous substance certification covers removal or remedial action at listed hazardous waste sites and underground storage tanks.
Ask the company in writing what training its crew has and how it handles the waste.
How much biohazard cleanup costs in California (estimates, not quotes)
Our model puts biohazard cleanup at $2,425 to $5,375 per job, and it's no quote. The wage rows show what the nearest federal occupation is paid, which is the occupation the model borrows and not what a company charges.
| Item | Figure | What it is |
|---|---|---|
| Estimated range, not a quote | $2,425 to $5,375 per job | Built from 2 national published ranges, adjusted by the California hazardous materials removal worker wage ratio (1.08). No California water, fire or sewage restoration company published a price we could count. Three California mold-inspection firms publish inspection prices, which are not a restoration job and are not used in these rows. Basis: no state company sample (no counted California company price for this job), national estimate only. |
| Hazardous materials removal worker wage, California mean | $29.21 an hour (United States mean: $27.13) | BLS pay for hazardous materials removal workers, the nearest federal occupation (May 2025). |
| Same occupation, California median | $26.98 an hour (middle half of workers: $22.68 to $32.47) | Same occupation through O*NET OnLine; pay, not price. |
| Same occupation, San Diego and Sacramento medians | $24.90 and $24.28 an hour | Two metros with lower medians than the state. |
Estimated range. Built from national published ranges (2 sources), adjusted by California's hazardous materials removal worker wage ratio to the US (1.08, BLS May 2025). Not a quote. No California restoration company published a water, fire or sewage price we could count. We have no counted California company price for this job, so the range is our national estimate alone. Full method. Prices as of Oct 23, 2026.
Contract rules when the job includes repairs
A home improvement contract must be in writing and signed before work starts, with the contractor's license number and a three-business-day notice of cancellation under B&P 7159. B&P 7159.5 caps its down payment at $1,000 or 10 percent of the contract, whichever is less, and bars payments ahead of the value of work done.
A "service and repair contract" is one of $750 or less that you started, and under B&P 7159.10 no payment is due on it until the work is completed. False or misleading advertising to win a home improvement contract is a misdemeanor under B&P 7161.
Questions to put to a company before it starts
Ask what training the crew has, how it contains and removes the waste, whether it works to a written scope, and who carries the insurance if something is damaged. If a company wants a large payment up front, the 7159.5 cap is the figure to quote back.
CSLB takes complaints against licensed and unlicensed contractors for up to four years from the act, at (800) 321-CSLB (2752). An investigation may end without restitution for you.
When a biohazard can't wait
- Anyone is hurt or in danger: call 911.
- Fluids have reached a place children or pets use.
- The scene has been released and the smell is spreading to other rooms.
- A small, contained cleanup after the scene is released, once you have spoken to your insurer.
- Repairs and repainting, after the cleanup is finished.
Who may do the repairs after a biohazard cleanup
CSLB's list names no trauma or biohazard class. The repairs afterward are contractor work, and B&P 7048 exempts a project only when it's under $1,000, casual and minor, and needs no building permit, so a bigger repair needs a contractor holding a CSLB license.
Contracting without a license is a misdemeanor under B&P 7028, with a fine of up to $5,000 on a first conviction. Look the contractor up on CSLB's license check before work starts.
Ask which licenses your state requires for the work, and check them with your state's licensing office before anyone starts. A credential from a private body, such as IICRC, isn't a license.
Questions people ask
Does a CSLB class cover biohazard cleanup?
Its hazardous substance removal certification covers listed hazardous waste sites and underground storage tanks. Ask the company what training its crew has.
What happens after a death or injury at home?
After that, call your insurer and then the restoration line on this page. Leave body fluids for the crew.
Is biohazard cleanup covered by home insurance?
Ask for the paperwork list at the same time, and if the answer stalls, CDI's consumer hotline is 1-800-927-4357.
Which questions belong in a biohazard company interview?
Get a written scope. For a home improvement contract, B&P 7159.5 holds the deposit to $1,000 or 10 percent of the price, whichever is less. Look the contractor up on CSLB's lookup.
What does biohazard cleanup cost in California?
National published ranges, scaled by California's wage ratio for the nearest federal occupation, make up that figure, and no California company price was counted for it.
- U.S. Bureau of Labor Statistics, OEWS May 2025: Hazardous Materials Removal Workers (SOC 47-4041), California, mean hourly wage Read Oct 23, 2026.
- U.S. Bureau of Labor Statistics, OEWS May 2025: Hazardous Materials Removal Workers (SOC 47-4041), United States, mean hourly wage Read Oct 23, 2026.
- RestorationMatch: how we estimate costs, California (editorial policy) Read Oct 23, 2026.
- O*NET OnLine: California wages, 47-4041.00 Read Oct 20, 2026.
- CSLB Licensing Classifications Read Oct 20, 2026.
- CSLB: HAZ - Hazardous Substance Removal Certification Read Oct 20, 2026.
- B&P Code 7159 Read Oct 20, 2026.
- B&P Code 7159.5 Read Oct 20, 2026.
- B&P Code 7159.10 Read Oct 20, 2026.
- B&P Code 7161 Read Oct 20, 2026.
- CSLB: Filing a Construction Complaint Read Oct 20, 2026.
- B&P Code 7048 (current text) Read Oct 20, 2026.
- B&P Code 7028 Read Oct 20, 2026.
- CSLB: Check a Contractor License Read Oct 20, 2026.
- CDI: Getting Help Read Oct 20, 2026.
- PG&E: Gas safety Read Oct 20, 2026.
- SoCalGas: Emergency information Read Oct 20, 2026.
- SDG&E: Gas safety Read Oct 20, 2026.