The details on Demko Construction LLC
- WA L&I registration
- DEMKOCL754DC
- Registration checked
- September 14, 2026
- Registered since
- 2025
- Expires
- March 2027
- Contractor bond
- $30,000 · Nationwide Mutual Ins Co
- Liability insurance
- $1,000,000 · Ohio Security Ins Co
- Insurance through
- May 2027
- Primary trade
- General Contractor
- L&I specialty
- GENERAL
- Registered principal
- DEMKO, NIKOLAY · since 2025
- Registered principal
- DEMKO, SERGEY · since 2025
- Service area
- Greenacres
Something here wrong or out of date? The business can claim this listing and correct it.
Questions worth asking Demko Construction LLC
Does Demko Construction LLC hold a Washington contractor registration?
Registration DEMKOCL754DC is the one to check, and it expires March 2027. It is Demko Construction LLC's, filed with Washington State L&I. That was current on the state record as of September 14, 2026 — the link on this page goes to the record itself. L&I also lists a $30,000 contractor bond (Nationwide Mutual Ins Co) and $1,000,000 of liability insurance with Ohio Security Ins Co through May 2027. Ask them to send the bond and insurance certificates over before the first day on site.
Does Demko Construction LLC cover my part of Spokane?
Greenacres 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 Demko Construction LLC end up on this page?
Licensed, and working in Greenacres. That is the bar for a page on this site, and Demko Construction LLC clears it. That registration is checked against Washington's record, and the date of the check is on this page for you to weigh.