Washington contractor license
DENNEHY'S BACKFLOW SERVICE
- CC-BV Irrigation/Sprinkling Systems
DENNEHY'S BACKFLOW SERVICE is a CC-BV Irrigation/Sprinkling Systems contractor in Maple Valley, licensed in Washington for 13 years (since 2013). As of Oct 28, 2026, state records list the license as expired, with an expiration date of May 9, 2026 and a license bond is on file.
DENNEHY'S BACKFLOW SERVICECC-BV Irrigation/Sprinkling Systems · checked Oct 28, 2026
ExpiredLicense number#DENNEBS879LR
Licensed sinceJun 19, 2013
Years licensed13 years
Expiration on recordMay 9, 2026
City and countyMaple Valley
License bondOn file
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Source: Washington State Department of Labor & Industries (L&I) contractor records. Last updated Oct 28, 2026. Page refreshed Nov 4, 2026.