This isn't anything new.
This 30-storey office building in Winston-Salem was listed on the National Register of Historic Places on April 19, 2001 (NRHP#01000376).
It was only 36 years old at the time (built in 1965). The tax credits allowed the new owner to completely restore the building. And yes, it was restored to it's original 1965 appearance, with a several upgrades as well.
Source
The building was listed due to being North Carolina's best example of the International Style and it was once the state's tallest building for the headquarters of Southeast's largest bank in the 1960s (Wachovia). It was the state's symbol of financial progress during the 1960s. That was in the paperwork and it was enough to get it listed. Newer buildings can be listed if they are of historic significance to the city, state, or nation. I can remember visiting this city before the building was restored and people wanted it demolished. Today, it's among the most loved skyscrapers in the city. People love the reflections in the energy efficient coated glass and they like how it changes color to bright yellow and orange during sunrise/sunset. It is worth noting: They did a major restoration. Finding the before picture would make a good case for restoring these buildings. Sometimes, after restoration, they can look really good! I've read comments on these forums from people who love this building in this city's photograph threads.