Spokane County, Washington Public Records

[Daniel W Finley]

My business partner and I trying to do RE wholesaling in the Spokane area. We called the county courthouse to get a tax delinquent list, and the clerk said that the list doesn't not have address, costs a lot, and you must sign a promise stating that you will not use the info as a mailing list. My question is, doesn't that make the county records useless in looking for leads? Is the law simply that you can't directly import county records into a mailing list, but can make a smaller list from it? How can you make a mailing list if there are no addresses? 

I know it's kind of a silly question, we're just beginners. Would appreciate any help. I'm pretty confused by it. Thanks