Rockstar couple Sharon and Ozzy Osbourne are currently facing a lawsuit due to illegally extending the backyard of their house in Los Angeles — without permission.

According to the lawsuit filed against the celebrity couple, they annexed a land next to their massive Hidden Hills, Los Angeles home, which is governed by The Mountain View Estate Owner’s Association. The said association claims that Sharon and Ozzy Osbourne built a fence in their backyard which extended roughly 8,500 square feet in the Association’s land. However, the lawsuit did not specify whether Sharon and Ozzy Osbourne were notified of the alleged infringement.

The lawsuit also stated that a land surveyor working for the Association discovered the enroachment on the 2nd of May. Now, The Mountain View Estate Owner’s Association is demanding an order from the court, requiring the Osbournes to remove their fence and stay off its property.

The lawsuit comes after news broke out the Sharon and Ozzy Osbourne have paid off their tax bill for the year 2008, but are claimed to still owe approximately $1.4 million to the IRS. The couple initially gave the feds $700k. The IRS slapped Sharon and Ozzy Osbourne with a tax debt last spring, amounting to $1.7 million.

Last April, Sharon Osbourne explained the reasons on her daytime US chat show, “The Talk” why she and Ozzy Osbourne are behind on their tax bill. Sharon said that she lost track of her family’s finance because she was spending too much time on herself. She also added that although she initially put the blame on her accountant, she was now taking full responsibility for the $1.7 million tax debt.

“Even though he is paid to do a job, the buck stops with me,” Sharon Osbourne said.