Sharon and Ozzy Osbourne are facing legal action after allegedly building on their neighbours' land without permission.
The rocker and his manager wife have been hit with a lawsuit which accuses the stars of expanding their Hidden Hills home in Los Angeles by erecting a fence on surrounding property.
The complaint has been filed by lawyers for The Mountain View Estate Owners' Association, which governs the gated community adjacent to the celebrity couple's mansion.
The reported encroachment was discovered last month by a surveyor inspecting the land, reports TMZ.com.
Mountain View bosses have asked a judge to order the Osbournes to remove the fence.