Their private kingdom

The house that Seal and Heidi Klum sold has a European sensibility. (Jeff Ong)

"Project Runway" host and executive producer Heidi Klum and her husband, singer-songwriter Seal, have listed their Beverly Hills Post Office-area estate at $6.9 million.

Described as a "21st century Loire Valley chateau," the house sits behind gates on more than 4 acres. Features include a glass-enclosed wine vault in the dining room, a wood-paneled library and a master suite with dual bathrooms and walk-in closets and a sitting area with a two-sided fireplace. The more than 9,000 square feet of living space include six bedrooms and 91/2 bathrooms. French doors open to a loggia. A tennis court and swimming pool are among outdoor amenities.

The pair had extensive work done on the grounds, including landscaping the long driveway leading to the mansion. They are selling because their family has outgrown the house, said Lynn Teschner of Coldwell Banker, Beverly Hills South, who is their listing agent.

Klum, 37, has been executive producer of the TV series "Seriously Funny Kids" (2011), "Project Runway" (2004-10) and "Models of the Runway" (2009-10). After 13 years as a model for Victoria's Secret, the former Sports Illustrated Swimsuit Issue cover girl is now the face of Astor, a European cosmetics brand.

Seal, 48, won three of his four Grammys for his hit "Kiss From a Rose," from the soundtrack to "Batman Forever" (1995). His seventh studio album, "Commitment," was released last year.

Public records show the property was purchased in 2005 for $7.6 million.

lauren.beale@latimes.com