Washington requires construction contractors to register with the Department of Labor & Industries under chapter 18.27 RCW, and you can check a company on L&I's website. Whether water extraction or drying alone needs registration was not sourced, so ask the company. There is no restoration-specific state licence.
Key takeaways
- Washington requires construction contractors to register with the Department of Labor & Industries under chapter 18.27 RCW; operating unregistered is a gross misdemeanor, and a secondary summary adds that an unregistered contractor cannot sue to collect.
- We could not source whether extraction or structural drying alone requires registration, so the safe move is to ask for the company's L&I registration and check it yourself on L&I's website.
- Washington has no restoration-specific licence, and we found no state mold licence; IICRC and similar credentials are voluntary.
- Bond, insurance and fee amounts in published sources conflict, so no dollar figure is printed here; ask for proof of insurance and verify it.
- Get the scope and price in writing before work starts, and be wary of a large payment up front, pressure to sign on the spot and any company that will not name its registration.
Does Washington require a licence to dry out a water-damaged house?
Washington requires construction contractors to register with L&I under chapter 18.27 RCW. We could not source whether extraction or drying alone falls under that rule, and there is no restoration-specific state licence. The practical answer is to ask the company for its L&I registration and verify it online.
The word to notice is registration. Chapter 18.27 RCW sets out contractor registration for people who build, repair, alter or improve. It is not a skills exam, and a registered company is not necessarily a good one. It is a baseline: a registered company has met the state's filing requirements and can be looked up.
The harder question is where water extraction and drying sit. Specialty registration works by classification, listed in WAC 296-200A-016. Repair work after drying, such as replacing drywall, flooring and cabinets, is construction work. Whether a crew that only pumps water and runs dehumidifiers needs registration is not something we could confirm from a source we trust, so we do not say either way.
What you can do is ask. A company that does restoration work should be able to give its registration number and tell you which classification it holds. Then look it up yourself. If the answer is vague, treat it as a warning.
How do I check a company on L&I's website?
Ask the company for its registration number and business name, then search L&I's contractor lookup. Confirm that the name matches, the registration is active and any bond and insurance are on file. Look for violations or complaints. If the number is not found, do not sign.
L&I publishes a contractor search on its website. Search by the business name or the registration number. The record shows the registration status, the business address and the classification, and it usually shows whether a bond and insurance are on file and whether violations have been recorded. Take a screenshot or print the page for your records.
Check the details against the paperwork. The name on the contract should be the registered name. If the truck says one thing, the invoice another and the registration a third, ask why. Registration under a different name can be innocent, such as a trade name, but it should be explained.
Do this before the work, not after. It takes a few minutes, and it is one of the few checks you can do yourself on a Sunday night while a pump is running.
What about bonds, insurance and fees?
Sources conflict on the dollar amounts of the bond, the liability insurance and the registration fee, so none is printed here. What matters to you is that a registered company should have a bond and liability insurance on file, and you can ask for a certificate of insurance and verify it with the insurer.
One L&I form lists a bond of $6,000 for a specialty contractor and $12,000 for a general contractor, with $250,000 in liability insurance. A separate guide reports $15,000 and $30,000 from July 1, 2024, and fees of $124.70 versus $150.20. We could not reconcile these, and amounts change, so we do not use any of them.
The practical point holds either way. A bond is a pool of money that can be claimed against in some circumstances, and it is not a promise that your job will be done well. Insurance protects against damage the company causes. Ask to see a certificate, and ask who is covered: the company, its employees or both.
Keep expectations modest. A bond is not a refund policy and registration is not a guarantee. They make a complaint and a claim possible, and that is their value.
Which credentials are real, and which are marketing?
Registration with L&I is the state requirement for construction contractors. IICRC credentials, such as water restoration technician courses, are voluntary and show training, not state approval. We found no Washington mold-specific licence. Treat any claim of a state water-damage or mold licence in Washington as something to verify.
The IICRC is an industry body that sets standards and certifies technicians and firms. Its credentials are useful signals of training, and the IICRC website is where to ask about a firm's status. They are not state licences, and holding one does not replace L&I registration.
For mold, we found no state mold licence or certification in Washington. Secondary sources, including license-lookup and restoration sites, say the same. One bid notice required a mold-remediation licence, but that was specific to the project. So if a company says it is a state-licensed mold remediator, ask which state agency issued the licence and look it up.
Be wary of the word licensed on its own. Registered, bonded, insured, certified and licensed mean different things, and a company that uses them loosely may not know the difference or may hope you do not.
| Credential | What it is | Where to check |
|---|---|---|
| L&I contractor registration (chapter 18.27 RCW) | State registration for construction contractors; active status, bond and insurance are listed | L&I's contractor lookup on lni.wa.gov |
| Specialty classification (WAC 296-200A-016) | Registration by type of work | The same lookup shows classifications |
| IICRC certification | Voluntary industry training and standards; not a state licence | IICRC website |
| State mold licence | None found in Washington | Ask any company claiming one which agency issued it |
| Certificate of insurance | Proof of liability coverage, from the insurer | The insurer or agent named on the certificate |
What should a good written estimate and contract contain?
A written scope that names rooms and square footage, the water category, the equipment and the number of days, what will be removed, what is excluded and how any change is approved. Price should be on paper before work starts, with the company's registration number and a clear payment schedule.
Ask for the price in writing before anything is set up. That includes extraction, equipment per day, demolition and disposal, and any after-hours charge. A single lump sum without a scope makes comparisons impossible. See the cost guide for national ranges and why none is a Seattle price.
Look at who does what. A restoration contract covers drying and cleanup. Repair, such as new drywall and flooring, is a separate scope. A company that bundles them should itemize them. Plumbing repair belongs to a plumber, and roofing to a roofer.
Finally, read the authorizations. A work authorization that lets a company bill your insurer directly may also assign your claim rights. Read it, ask what it means and do not sign under pressure. You can call your insurer first, and a moment's delay is worth it.
Does my insurer pick the contractor?
No. In most cases you choose who dries your house, though your insurer may suggest companies or want to approve the scope. Call the insurer the same day, report the loss, ask what it requires and keep your own photographs, readings and receipts so that you control the record.
Policies differ, and we could not source a Washington Insurance Commissioner page on contractor choice, so this is the general pattern. An adjuster may send a list of vendors. You can usually use one, or hire your own, but ask the insurer in writing whether a particular company is acceptable before work begins.
Your duty under most policies is to prevent further damage, which means starting mitigation without waiting for the adjuster. Reasonable emergency steps are usually part of the claim. Photograph the damage first, keep wet items if the adjuster wants to see them and keep all receipts.
Whatever route you take, the written scope matters. If the insurer's number and the contractor's number differ, a clear scope with measured square footage and readings is what lets the two be reconciled without arguing about the house.
What if something goes wrong after I hire someone?
Put the problem in writing to the company, keep photographs and readings, and check its L&I record. If the dispute is not resolved, L&I handles complaints about registered contractors, and a lawyer can advise on a larger loss. Do not stop paying for work already done without taking advice.
Start with the paper. Write a short, factual note: what was agreed, what happened, what you want done and by when. Send it by email so there is a record. Keep the quote, the authorization, the invoices, the equipment log and your photographs.
Then check the L&I record again. Violations, an expired registration or a claim against the bond are visible there, and you may need the information if you decide to complain. L&I also publishes information for consumers on disputes with contractors.
For a large loss, such as a flooded finished basement or a sewage backup, a short consultation with a lawyer or your insurer's complaint line may save money. Do not sign a release before the dry-out is confirmed complete by readings, since a release can end your right to complain.
What are the red flags after a flood or storm?
Red flags include door-to-door offers after a storm, a demand for a large payment up front, pressure to sign immediately, no registration number, a quote that changes after work begins, and a refusal to put the scope in writing. A genuine emergency does not need an unsigned blank form.
Storms bring out people who knock on doors. After a major storm such as the December 2025 atmospheric river, people look for help in a hurry. Take a breath. Photograph the damage, make the house safe and call two or three companies, not only the first one.
A real emergency company answers the phone at any hour, explains what it will do before it does it and shows you the registration. It does not demand cash only, push a new contract on arrival or take the house apart before a moisture reading. It does not promise what your insurer will pay.
If you have already signed something you regret, read it for a cancellation period and call L&I. Keep every document and photograph. Our water damage restoration page describes how a normal job runs.
Frequently asked questions
Is a water damage contractor in Washington required to be licensed?
Washington requires construction contractors to register with L&I under chapter 18.27 RCW. We could not source whether extraction or drying alone requires it, and there is no restoration-specific licence. Ask the company for its registration and verify it on L&I's website.
Can an unregistered contractor take me to court over a bill?
A secondary summary of RCW 18.27 says an unregistered contractor cannot sue to collect payment, and operating unregistered is a gross misdemeanor. Treat that as a reason to check registration first, and read the statute or ask L&I.
Does Washington license mold remediators?
We found no state mold-specific licence or certification. One bid notice required a mold-remediation licence, but only for that project. Ask any company for its credentials in writing and consider an independent assessor.
Is IICRC certification the same as being licensed?
No. IICRC credentials are voluntary training and industry standards, not state licences. They are useful, but they do not replace L&I registration for work that requires it.
How much bond and insurance should a contractor carry?
Sources conflict on the amounts, so we do not quote any. Ask for a certificate of insurance, check the bond and insurance on L&I's record and confirm the figures with L&I.
Sources
- Washington State Legislature – Chapter 18.27 RCW, Registration of contractors
- Washington Department of Labor & Industries – Verify a contractor, tradesperson or business
- IICRC – Institute of Inspection, Cleaning and Restoration Certification
- U.S. EPA – A Brief Guide to Mold, Moisture, and Your Home
This guide is general information for King County homeowners, not a substitute for an on-site inspection. Prices are estimates. See our disclaimer.