I don't get into Salt Lake often, but my hubby thinks its a seedy part of town.
A9 maps with "BlockView" indicates it's a fairly nice commercial-office neighborhood. Take a look:
http://maps.a9.com/?mapMode=m&mapBvr=&ypLoc=3021+S+Main%2C+Salt+Lake+City%2C+UT&mapFrom=&mapTo=