Coruscation

For instance Jakobson Properties, which manages some 2,000 apartments in about 30 buildings in Manhattan and Queens, offers what it describes as middle- and upper-middle-income housing. Peter Jakobson Jr., a principal, said, "Our clientele is in school, going back to school, first job, second job, and not from New York."

He says that Jakobson leases most of its apartments through its Greenwich Village office and its Web site, nofeerentals.com, but that brokers bring in about 35 percent of its business. Ms. Schwartz said, however, that some management companies work exclusively through brokers.