Ste vs suit vs #, st vs st. vs street, isn't really necessary imo. Google has figured that out via clustering. But if I'm setting up new biz or making paid changes at an aggregator level (expressupdate, localeze, Acxiom) for the 1st time I stick with which abbreviation/version is most common among all know citations. I'd also recommend taking a look at how it is set up at a state tax record level and matching it.