The Cohen group held the buildings for only a few years and then sold them for a combined $17 million profit.

Mr. Cohen did not respond to a request for comment.

The tenant group issued a similar report about the Kushners in the spring after sifting through public records from the Department of Buildings, the Finance Department and the state’s Homes and Community Renewal agency, which oversees rent-regulated tenants. Up until 2015, when the city and state agencies formed a Tenant Harassment Task Force, there had been little coordination among them.

Earlier this year, current and former tenants at 184 Kent Avenue in Brooklyn, a Kushner-owned residential building at the edge of the East River, sued the Kushner Companies in State Supreme Court claiming that they had been forced out by “loud and obnoxious drilling” and a “constant cloud of toxic smoke and dust.”

The number of rent-regulated tenants in the building plummeted to 71 in June from 316 in May 2015; the Kushner Companies are now selling condominium apartments in the building.

Neither Mr. Cohen nor the Kushner Companies have been cited for tenant harassment.

Aaron Carr, executive director of Housing Rights Initiative, said that the group’s analysis “suggests that Mr. Cohen had commenced a deliberate campaign to systematically harass tenants out of their apartments using destructive, hazardous and illegal construction practices, so he could dramatically raise rents.”

But the report also provides a “window into the dysfunction at city and state agencies,” he said.

“The Department of Buildings approved falsified permits,” he said, “despite receiving complaints from tenants in those very same buildings.”

Records indicate a steep decrease in the number of rent-regulated tenants in the buildings owned by Mr. Cohen and the Kushners.