From warehouses to office space, real-estate markets are getting turned upside down. Here's a look at key trends and must-know deals.

· Offices, hotels, and malls were emptied by the coronavirus. Even as they reopen, the disruption has created a new normal. 
· Big firms are rethinking office needs — and some commercial real-estate deals are being put on ice as financing dries up. 
· A surge in e-commerce, meanwhile, is fueling demand for warehouse and...