Search the register

Enter the licence number, the UBI, or the business name.

Three things you can type

• The licence number — the one the law puts on the advert, like ECOSTSC758NN. Letters and digits, as printed.
• The UBI — the 9-digit Unified Business Identifier the state uses across L&I, the Department of Revenue and the Secretary of State. One business can hold several licences under the same UBI: 161,230 registrations belong to 149,441 businesses.
• The business name, or part of it.

Every entry shows the licence, the bond, the insurance and the principals on one page — plus whether the registration has ever been suspended.

Your search never reaches a server. It lives in the part of the address after the #, which browsers do not transmit, and the lookup runs in your browser against static index files.

Finding nothing is itself an answer. An advert must carry a current registration number. A number that is not in this file is not in the state's file either — and hiring an unregistered contractor puts you outside the protection of the bond.