chi-Medline-HQ (2) Kraft Heinz left this Northfield complex last year, but Medline quickly agreed to fill it.

CHICAGO—Corporate moves from the suburbs into the CBD typically generate headlines, but all that attention may be obscuring some of the good news happening outside the urban core. It’s true that many suburban submarkets have elevated rates of vacancy, but some areas, such as the O’Hare submarket, have recovered quite well from the recession, and many tenants have begun expanding. That energy is most noticeable within the best class A properties, and developers say suburban buildings that they can bring up to those standards have a bright future.