The Crest, the 4th Avenue condo on 2nd Street, is apparently 90 percent sold and ready for move-ins. The sign above is taped to the outside of the building, and a local entrepreneur has put up his own sign next to the Crest’s, in a bid, perhaps, to do business with the building’s new residents. StreetEasy shows eight active listings left at the condo that go from $559,000 (734-sf 1-bed) to $738,000 (985-sf 2-bed). GMAP