Pricing

Pay per usage

Washington Contractor License Search — Official L&I Open Data

Every registered Washington State contractor from the Dept. of Labor & Industries official open-data feed (~161k licenses, ~75k active), refreshed daily. Name, license number, type & status, owner, specialties, dates, address, phone, UBI. Filter by city, type, status, name, specialty, or number.

Pricing

Pay per usage

Rating

0.0

(0)

Developer

Keegan Labs

Actor stats

Bookmarked

Total users

Monthly active users

a day ago

Last modified

Categories

Lead generation

Business

City

city

Optional

Filter by city (partial match, case-insensitive). Example: Seattle, Spokane, Vancouver, Tacoma.

Type:string

Example:Seattle

License type code

licenseType

Optional

L&I contractor license-type code (exact match). CC = Construction Contractor, EC = Electrical Contractor, PC = Plumbing Contractor, LC = Elevator Contractor.

Type:string

Example:CC

Options:

CCECPCLC

License status

status

Optional

Filter by license status. Accepts a one-letter status code (A=Active, E=Expired, S=Suspended, R=Re-Licensed, O=Out of Business, I=Inactive) or a status text substring. Defaults to Active unless 'Include all statuses' is on.

Type:string

Example:A

Include all statuses (not just Active)

includeAllStatuses

Optional

If true and no explicit status is set, returns licenses of every status (active, expired, suspended, out of business, etc.).

Type:boolean

Default:false

Contractor license number

licenseNumber

Optional

Exact contractor license number (UBI-style L&I number), e.g. ECOSTSC758NN. Case-insensitive.

Type:string

Example:ECOSTSC758NN

Business or principal name contains

nameContains

Optional

Free-text substring matched against both the business name and the primary principal (owner/officer) name, case-insensitive.

Type:string

Example:construction

Specialty contains

specialtyContains

Optional

Substring matched against the license specialty descriptions (e.g. GENERAL, RESIDENTIAL, PLUMBING, ELECTRICAL, HEAT/AC).

Type:string

Example:GENERAL

License effective on/after (YYYY-MM-DD)

effectiveFrom

Optional

Only include licenses whose effective (issue) date is on or after this date (ISO YYYY-MM-DD). Great for 'newly licensed this month' lead pulls.

Type:string

Example:2026-01-01

License effective on/before (YYYY-MM-DD)

effectiveTo

Optional

Only include licenses whose effective (issue) date is on or before this date (ISO YYYY-MM-DD).

Type:string

Example:2026-12-31

Maximum records

maxRecords

Optional

Hard cap on the number of license records to return. The full dataset is ~161k rows (~75k Active).

Type:integer

Minimum:1

Maximum:200000

Default:5000

Socrata app token (optional)

socrataAppToken

Optional

Optional data.wa.gov / Socrata application token to raise API throttling limits. Not required — the API works without one.

Type:string

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