One contractor, three business names: how to verify the match
Work through a fictional business-name investigation and document which records can be connected, which remain ambiguous, and why.
The ambiguous records
A permit lists “Cedar Works.” A proposal names “Cedar Works Construction LLC.” A directory lists “Cedar Construction.” Similar wording suggests candidates, not a confirmed identity. Keep all three records separate at the start.
Compare stable identifiers
| Field | Example observation | Decision |
|---|---|---|
| Legal identity | Proposal and agency record share the same legal entity and credential identifier | Candidate match; preserve both sources. |
| Trade name | Official registry explicitly links Cedar Works to the legal entity | Evidence for a trade-name relationship. |
| Directory name | Cedar Construction has a different identifier | Keep separate despite name similarity. |
| Address | Permit and proposal use the same mailing address | Supporting context; shared offices are possible. |
| Contact | Same phone appears on two websites | Supporting context; not proof of legal identity. |
Build an evidence chain
Start with the exact permit record, identify the participant role, and follow the responsible agency’s business or credential lookup. Check whether a legal record actually establishes the trade name. Record the identifier and the date of the source check. An old address or an expired credential may explain a mismatch, but that explanation needs evidence.
Washington’s business identifier and contractor registration answer different questions. A business identity match does not establish permission to perform every regulated trade, insurance adequacy, employee status, or purchasing authority.
Save the decision and the unresolved edge
A defensible fictional conclusion is: “Cedar Works and Cedar Works Construction LLC appear to refer to the same entity because the official trade-name record links them and identifiers agree. Cedar Construction remains separate because its identifier differs.”
If the source never establishes the trade name, stop at “possible match.” Ask the business or agency for the relevant identifier. Do not silently merge uncertain records; one mistaken merge can contaminate activity history and contact research.
Your checklist
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Sources and method
Sources reviewed September 12, 2026 unless a record carries its own observation date.