An office building in the Denver Tech Center that no one works from is hitting the auction block. The auction for the four-story, 164,000-square-foot Quebec Court II building at 5800 S. Quebec St. in Greenwood Village is scheduled to begin online May 1 and end two days later, according to auction website Ten-X. The structure was built in 1980 and renovated in 1998, according to the auction site.