For sale: office building, never used. The Rev360 building in RiNo, which has sat unused since it was completed in July 2020, is for sale. Rev360 is owned by San Francisco-based Shorenstein, which bought it in November 2021 for $72 million. CBRE is marketing the five-story building at 3600 Brighton Blvd. The firm’s marketing materials don’t list an asking price, but state that the building “can be acquired at an incredible discount to replacement cost.” That indicates Shorenstein, which declined to comment, is prepared to lose money on the deal.