The historic Mount Vernon estate, George Washington’s home for nearly 290 years, is set to close for extensive renovations starting next month due to deterioration over the years. This marks the first major restoration in over 150 years.

According to The Washington Post, located along the banks of the Potomac River in Virginia, Mount Vernon will temporarily close its doors on November 1. Douglas Bradburn, the estate’s director, indicated that the majority of the property—approximately two-thirds of the estate—will be closed to the public for the next eight months.

The Mount Vernon Ladies’ Association of the Union, a nonprofit organization that purchased the estate in 1860 through fundraising efforts, still holds ownership today. The estate, built by Washington’s father in 1734, has weathered nearly three centuries and has undergone minor repairs in the past. However, it was recently discovered that termite damage has severely compromised the foundation, putting the entire structure at risk.

Bradburn explained the seriousness of the situation: “To put it plainly, the whole house is sitting directly on a termite nest or on bricks. A strong gust of wind could very well lift the house off its foundation.”

In response, the Mount Vernon Ladies’ Association has committed $30 million to a comprehensive overhaul of the flooring and basement structure, with completion anticipated by 2026. “This is the most significant renovation Mount Vernon has ever seen, and the architects will thoroughly address the issues,” Bradburn emphasized.

Amy McAuley, the lead on the renovation project, shared her excitement about the restoration: “It’s truly remarkable, especially when you enter the basement, as it feels like stepping back into Washington’s era.”

Currently, the main building is supported by steel beams, but the renovation will involve creating a new foundation to secure it properly. The shaky stone walls in the basement will be replaced with similar sandstone panels. McAuley also revealed that the new foundation will utilize oak timber from Mount Vernon itself, supplemented by 18th-century oak from Ohio.