The details on GW Markquart Construction
- WA L&I registration
- GWMARMC766LQ
- Registration checked
- September 14, 2026
- Registered since
- 2024
- Expires
- June 2028
- Contractor bond
- $30,000 · Nationwide Mutual Ins Co
- Liability insurance
- $1,000,000 · Trisura Specialty Insurance
- Insurance through
- May 2027
- Primary trade
- General Contractor
- L&I specialty
- GENERAL
- Registered principal
- Markquart, Garry Wayne · since 2024
- Service area
- Liberty Lake
Something here wrong or out of date? The business can claim this listing and correct it.
Questions worth asking GW Markquart Construction
Is GW Markquart Construction licensed in Washington?
The number you want is GWMARMC766LQ — GW Markquart Construction's Washington State L&I contractor registration, expiring June 2028. Last checked September 14, 2026. Washington's contractor lookup is free and open if you want to confirm it today. On file alongside it: a $30,000 contractor bond (Nationwide Mutual Ins Co) and $1,000,000 of liability insurance with Trisura Specialty Insurance through May 2027. Ask them to send the bond and insurance certificates over before the first day on site.
What areas does GW Markquart Construction serve?
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 did GW Markquart Construction end up on this page?
Every general contractor business licensed in the Spokane area gets a page here, and GW Markquart Construction is one of them. We check that registration against the state's own record and date the check on this page, so you can see for yourself how current it is.