How hot is the downtown Chicago residential market? So hot it could have a physicist explain it on the television show Nova. The P.B.S. version, not the weak Fox reboot.

To wit, the new residential tower proposed for the corner of West Lake Street and North Halsted Street in West Town. Crain’s Chicago Business has the scoopage on the building currently known as 171 North Halsted, and says it’s a joint project between Chicago developer Jeffrey Shapack, suburban Northfield developer Focus Development, and Atlanta developer Atlantic Realty Partners.

But this isn’t yet another boring white-glass-rectangle-on-a-white-concrete-podium. In this case, the architect is Booth Hansen. You may remember that name from such curving glass facades as 30 West Oak Street. This tower, too, is going to be a great big luscious curve of glass. Though it will still be “-on-a-white-concrete-podium.” Still, it should look quite dramatic when traveling in and out of downtown on the CTA Pink or Green Lines.

Crain’s reports the building will be 28 stories, but we did our own digging, and found that it may end up as tall as 30. Documents filed with the city list both. The documents also list the number of residences as both 214 and 227, and the height as both 293 feet to the roof and 321 feet to the roof, and the total building height as 309 feet. So it looks like this was originally planned as a 30-story building and then scaled back to 28 stories.

The developer is trying to get a height bonus from the city through the Adopt-a-Landmark program. It’s pledging about $730,000 in order to squeeze a few more floors out of zoning. But the question remains which landmark the company will adopt. The papers in the city clerk’s office quite literally identify it as “[Landmark Building].”

If you’d like to suggest a nearby landmark to be adopted, use the comment spaces below this article. With 100,000 people working in real estate development, architecture, and related trades reading this blog there’s a chance your suggestion might be seen by the decision makers.

You can find our deet sheet after the diagram gallery: