# wa-contractor-license-records

> https://wa-contractor-license-records.pages.dev

## What this site answers

One query, one record. Key: **the L&I contractor license number (12 characters, e.g. ECOSTSC758NN)**.
Format: ^[0-9A-Z*#&.-]{6,14}$
Entities: 128438

## Source

- Origin: Washington State Department of Labor & Industries — Contractor License Data: General, Bond, Insurance (data.wa.gov)
- URL: https://data.wa.gov/d/m8qx-ubtq
- Last collected: 2026-10-02
- Re-use: Open Data Commons Public Domain Dedication and License (general file); public domain (insurance file)

## Access points

Every HTML page has a Markdown twin at the same path with the `.md` extension. Example: `/how-to-read/` -> `/how-to-read.md`. Links inside the Markdown files already point to the twins.

Search index, served as JSON with open CORS:

- `https://wa-contractor-license-records.pages.dev/d/n/cles.json` — the name-index keys
- `https://wa-contractor-license-records.pages.dev/d/n/<key>.json` — names starting with that key -> [identifier, name, city, state, type]
- `https://wa-contractor-license-records.pages.dev/d/r/<fragment>.json` — records; fragment = hash of the identifier: h = 0, then for each character h = (h*31 + character code) modulo 4096; in hexadecimal on 3 digits
- `/sitemap.xml` — every page

These paths are **version 1** and will not change without notice. Bulk access, an availability guarantee or a change feed goes through `/pro/`.

Indexable pages: 11

## What this site is NOT

- This is not the official register and does not replace consulting it.
- Holding a licence is the minimum legal requirement, not a quality mark.
- One record per license number.
- Bond and insurance joined on the license number.
- Individuals excluded.
- This site ranks no one.

## Privacy

No individual contractors; principals' names and phone numbers are never read.