A building that has stood along East Mill Plain Boulevard for nearly a half century is being made new again, slowly but surely.The $5 million makeover of Vancouver’s former city hall building is back on track after a three- or four-week delay caused by additional asbestos removal, said Gary Ehrig, a senior vice president of Northwest Property Resources LLC. The company has owned the property since April. In July, construction workers started to remove asbestos and open up the building’s four upper stories and basement level.“We had some unknown asbestos within the concrete masonry walls,” Ehrig said. It required more care in removing 12 vertical concrete panels from the building’s exterior. The work made way for a new glass-front facade.Plans also call for a good sprucing up of the site, a full city block bordered by Mill Plain, Broadway, and 13th and C streets. Ehrig said marketing efforts have already drawn leasing interest from creative-type office users. Several tech, financial, engineering, architecture and medical firms have made inquiries.The building has been renamed “Block 56.” The naming fits a hip real estate trend used in high-demand office markets, such as Portland’s Pearl District.“It’s the legal description of the site,” Ehrig said. “We’re trying to bring more creative office space onto the market” in downtown Vancouver.