Downtown Washington, D.C., is seeing a record amount of empty office space, according to a report.

A study by real estate firms CBRE Group and JLL said nearly a quarter of all office space in Washington is empty, according to 7News, leading to a large number of vacancies and “For Lease” ads throughout the city. Between April and June, more than half a million square feet of office space lay empty in Washington, according to the report, a record high for the city.