Research methodology

How to document a contractor check without overstating it.

ObservedWork’s source-selection method, six-part contractor review workflow, and sourced California and Washington examples of what records establish.

The short answer

A contractor check is a dated collection of evidence, not a permanent approval. Keep identity, credential scope, local requirements, coverage, public disclosures and open questions separate. Our worksheet records your research and never issues an approved-contractor badge.

Use the statement the evidence supports

Record observationAppropriate noteDo not conclude
No matching nameNo match in this source using these search terms.The business is unlicensed.
Active credentialThe agency displayed this status on the check date.All proposed work is authorized.
No public disclosure displayedNone displayed under this agency’s disclosure rules.No complaints or disputes exist.
Company associated with a permitThis source associates the company with the project.The company performed every trade or controls purchasing.
Six worksheet items recordedThe reviewer documented all six checks.ObservedWork verified or endorsed the contractor.

Our source selection and coverage

The 50-state directory points to responsible government agencies and the search services those agencies identify. A primary link may be a search, a roster, or an official page explaining how to reach the right program. The entry describes that scope. We do not replace local requirements with a state-level answer.

Our editorial review asks whether the link is an official starting point and whether the description accurately distinguishes licenses, registrations, regulated trades and local guidance. It does not check any particular contractor. Source-directory guidance was reviewed September 8, 2026; there is no continuous-monitoring claim.

What the worksheet records

Choose the state where the work will happen, then enter the exact business identity and the source you inspect. For each of the six checks, choose not checked, reviewed, follow-up needed or not applicable. Explain missing evidence and why a check does not apply.

A reviewed item means you recorded your review; it is not a favorable result. The progress count is a recordkeeping aid. Your contractor check date is entered separately from our editorial review date, and every downloaded worksheet retains that distinction. Notes remain in the current browser tab until you leave or reload; download them to retain a copy.

Use the six-part verification worksheet

California: look beyond a current license

CSLB’s hiring guidance calls for checking identity and the appropriate license classification. A license number printed on a proposal is a starting point for a check. Public complaint information has disclosure limits; an empty result is not evidence that every customer was satisfied.

Record bond and insurance information separately. Requirements can depend on the entity and work: California LLC licensees, for example, have additional liability-insurance obligations. Use the current agency guidance for the specific business rather than a blanket statement about all contractors.

Source: CSLB: finding the right contractor

Source: CSLB: complaint disclosure criteria

Source: CSLB: LLC requirements

Washington: distinguish registration from trade credentials

Washington L&I explains that ordinary contractor registration is not a competency examination. Electricians and plumbers have separate licensing or certification requirements. Its Verify service can help you investigate business identity, credentials, coverage and public enforcement information.

Read each record on its own terms. A UBI identifies a business; it does not replace the relevant contractor or trade credential. Preserve the date and exact status displayed, and ask L&I or the insurer to resolve coverage questions that the public record cannot settle.

Source: Washington L&I: homeowner guide to hiring a contractor

Source: Washington L&I: verify a contractor, tradesperson or business

Resolve uncertainty with the source

If two businesses have similar names, preserve both possibilities until you can distinguish them. If no record appears, check the identifier, legal name, trade and responsible jurisdiction. Ask the business which credential applies to the proposed work.

Avoid collapsing “not found,” “not checked” and “does not apply” into one result. These lead to different next actions. An unresolved question belongs in the worksheet with a named agency, insurer or business contact to consult; it should not silently become a pass.

Corrections and editorial responsibility

ObservedWork is responsible for this editorial workflow and directory. It is not an issuing authority, insurer or independent credential-verification service. We do not claim an external expert reviewed this page.

If an agency link or scope description is wrong, use our contact page and include the state, affected page, official replacement source and the date you found the issue. We assess the evidence before revising the page and its review information. A published checklist should become more useful as source guidance and real user questions change.

A practical review checklist

  • Match business identity before reading status as applicable to your contractor.
  • Keep license, registration, trade scope and local requirements distinct.
  • Write the observed status and source date, not an evergreen approval.
  • Record missing evidence and follow-up questions explicitly.
  • Download your notes and recheck current records before relying on them.

Sources & further reading

The primary sources below support the definitions and jurisdiction-specific examples. Checklists, illustrative examples, and research workflows are ObservedWork’s editorial guidance. Sources reviewed September 8, 2026.

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