Washington Contractor Registration Request for Duplicate License or Address Change is a form used by contractors in the state of Washington to apply for a duplicate contractor license or to change their address with the Washington State Department of Labor & Industries. The form can be used to request a replacement for a lost contractor license, to request a duplicate license due to a name change, or to update their mailing address and physical address. It is important to note that the form must be completed in its entirety and that any changes must be accurately noted. There are two types of Washington Contractor Registration Request for Duplicate License or Address Change: 1. Duplicate License Request: This form is used to request a duplicate contractor license. All necessary information must be included in order for the request to be processed. 2. Address Change Request: This form is used to update an existing contractor’s mailing address and physical address. The form must be completed in its entirety and all changes must be accurately noted.