New York

Downtown's availability tops 20 percent, which is a first, Colliers reports.

"Crowdfunding has grown up to be a real player in the real estate market," says Bruce Stachenfeld, chairman of RE law firm Duval & Stachenfeld.

"We arrived at the current state of downtown areas through necessary change, and it's going through yet another evolution," says Jamie Henderson, head of commercial real estate at Capital One.

As employees shift to new work models, companies are figuring out the complicated logistics.

Traffic rebirth in business districts received a warm welcome from stores.

"Not all of this will happen immediately, explained Stefan Weiss, senior economist at Econometric Advisors, in talking about the transition to the future of work.

37% of the portfolio consists of rent-controlled units.

Major CRE challenges, including supply chain and climate change, call for a combination of alternative and traditional risk assessments, says Moody's Analytics.