Sean and Robin Penn Selling Their Love Nest

8/14/2008 3:51 PM PDT

Sean and Robin Penn Selling Their Love Nest

Sean Penn and wife Robin Wright Penn have put their big-time Marin County, Calif. home up for sale. Anyone got a spare $15 mil lying around??

The Penns bought the 10,000 square foot mega-manse for a steal in '96 -- paying just $2.1 million for it. Then they spent two years fixing up the joint, and turned the 1933 Spanish-style home into a serious crib.

The two-story house has five bedrooms, a home office, a nanny suite, a home gym and a three-car garage -- plus a two bedroom guest house that has its own two-car garage. It also has all the standard celebrity home accouterments: pool, tennis court, big lawn and gardens and a dog run.

Sean and Robin filed, then unfiled, for divorce last year. Maybe they're moving in with Josh.