The details on Greenstone Corporation
- WA L&I registration
- GREENC*814N8
- Registration checked
- September 7, 2026
- Registered since
- 2019
- Expires
- August 2027
- Contractor bond
- $30,000 · Harco National Insurance Co
- Liability insurance
- $2,000,000 · Western Pacific Mutual Ins Co
- Insurance through
- September 2026
- Primary trade
- General Contractor
- L&I specialty
- GENERAL
- Registered principal
- Frank, Joseph M · since 2019
- Registered principal
- Frank, James M · since 2019
- Service area
- Liberty Lake
Something here wrong or out of date? The business can claim this listing and correct it.
Questions worth asking Greenstone Corporation
Is Greenstone Corporation a registered contractor?
Greenstone Corporation is registered with Washington State L&I under number GREENC*814N8, expiring August 2027. Checked against Washington's own record on September 7, 2026, and this page links straight to it. On file alongside it: a $30,000 contractor bond (Harco National Insurance Co) and $2,000,000 of liability insurance with Western Pacific Mutual Ins Co through September 2026. Ask for proof of bond and current insurance before work starts.
Does Greenstone Corporation cover my part of Spokane?
Liberty Lake is what they cover. A crew close to you is the one that comes back for a warranty call, so it is worth asking how far out they really travel.
How does a business get listed on this site?
Greenstone Corporation is licensed and working in the Spokane area — that's the whole bar for a page here. That registration is checked against Washington's record, and the date of the check is on this page for you to weigh.