The Republican National Committee’s unprecedented — and possibly illegal — use of the White House for key events in last month’s convention has left Donald Trump’s campaign with unexpected costs after RNC attendees and heavy equipment damaged both the South Lawn and the newly-renovated Rose Garden.

According to the Washington Post, the convention exacted a noticeable toll on the White House grounds, requiring sections of the South Lawn to be re-sod and other repairs to account for foot traffic from more than a thousands Trump supporters and the large stage lights, scaffolding, and outdoor TV screens.