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dannyward630 edited this page Jun 28, 2026 · 1 revision

Minnesota DLI Adapter Notes

Source ID: us.mn.dli.licenses_registrations

Current maturity: local_file_adapter

The Minnesota Department of Labor and Industry publishes a nightly ZIP archive containing CSV data for licenses, bonds, certifications, and registrations issued by the Construction Codes and Licensing Division. The official CSV header and representative row shape were reviewed on June 28, 2026. The adapter accepts extracted local CSV and XLSX snapshots; tests use tiny hand-authored fixtures.

Current Local-File Support

The adapter can parse and normalize:

  • license number;
  • license type;
  • business/name fields;
  • DBA;
  • public-record address fields;
  • phone;
  • status;
  • issue and expiration dates;
  • discipline indicator;
  • raw record and fingerprint.

The fixture includes active, expired, suspended, missing-expiration, quoted-name, and duplicate-license-number cases.

Status Mapping

  • Issued and Active map to active unless an expiration date is already in the past.
  • Expired maps to expired.
  • Suspended maps to suspended.
  • Revoked maps to revoked.
  • Pending maps to pending.
  • Unknown labels map to unknown.

Category Mapping

The adapter maps obvious labels only:

  • Residential Building Contractor: residential_contracting
  • Residential Remodeler: home_improvement
  • Plumbing Contractor: plumbing
  • Electrical Contractor: electrical
  • Contractor Registration: other

Unknown or broad source labels stay unknown rather than overclaiming coverage.

Caveats

The DLI source can include many license, bond, certification, and registration types beyond contractor licenses. Users should not treat every row as a contractor license without source-specific type filtering.

No-match wording remains:

No matching record was found in this source as of the checked time.

Operational Limits

  • Download and ZIP extraction remain caller-operated; the adapter consumes the extracted file.
  • Keep any future archive download path opt-in and outside default tests.
  • Revisit redistribution terms before publishing any generated datasets.

Canonical source

Clone this wiki locally