A new audit shows the agency that manages the city's real estate holdings has no accurate list of the office space it oversees.

According to an audit exclusively obtained by NY1, City Comptroller Scott Stringer found the Department of Citywide Administrative Services failed to maintain a reliable computer program or tracking tool to keep tabs on the city's more than 19 million square feet of office space.

Stringer's audit uncovered incomplete records and misinformation, and says the agency couldn't even identify some vacancies.

The comptroller says the mismanagement comes at a price.

"Taxpayer money being wasted is when the health department moves to a location to consolidate operations, but they're still paying for the office they vacated because they didn't do a full move, so we're wondering why this is happening," Stringer said.

The comptroller's office says the agency has implemented new policies and procedures to better manage and track the city's office space.