The Lake Sherwood house, completed in 2010, has 8,450 square feet on a single level. The modern Mediterranean features two offices, a temperature-controlled wine cellar, a home theater and a master suite with dual bathrooms and dual closets. There are five bedrooms and seven bathrooms. The 1.4 acres includes an infinity pool.
Courtnall, 46, started his NHL career with the Toronto Maple Leafs in 1983 and retired from the Los Angeles Kings in 1999.
Vaughan, 50 appeared on "Buffy the Vampire Slayer" (1992) and "The Wayan Bros." (1995). She was the daughter of jazz singer Sarah Vaughan.
Public records show the couple bought the lot in 2008 for $2,375,000.
Jordan Cohen of Re/Max Olson & Associates, Westlake Village, is the listing agent.