Cornerstone Const & Maint Llc
General contractor in Mercer Island, Washington
Active LicenseLicense #CORNECM858DQ
TradeGeneral
CityMercer Island, WA 98040
Phone(425) 326-8056
Business typeLimited Liability Company
PrincipalChiang, Ming Yen
Licensed since2015-03-18
License expires2027-03-30
UBI603191543
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License data sourced from Washington State Department of Labor & Industries public records. Verify current status with the state before hiring.
