Contractor in Granite Falls, WA.
Jack's Backflow Testing Llc appears in Washington license records as a contractor based in Granite Falls, WA. The record lists a WA L&I Construction Contractor license (#JACKSBT742JB) with status “Active”. It is listed as valid through 2028-04-20.
Information sourced from public state license records — not yet verified by the business owner. Always confirm credentials before hiring.
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Create a free account Or subscribe to message in-appCheck license #JACKSBT742JB on the Washington L&I lookup and the BBB the day you hire; status can change after Bidroom's last import (2026-05-04).
Jack's Backflow Testing Llc is a contractor based in Granite Falls, Washington. Their license classification is BACKFLOW SPECIALTY.
Yes. Jack's Backflow Testing Llc holds Washington L&I license #JACKSBT742JB (status: Active). Verify the current status on Washington L&I before hiring.
Jack's Backflow Testing Llc is based in Granite Falls, WA 98252.
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Not yet. This listing was created from public Washington license records but hasn't been claimed by the owner. The license info above is from official records, but the business hasn't confirmed its services, hours, or current availability with us yet.
Contractor vetting checklist · Cost guide · Look up this license at the state board