Paul Williams-designed home in Bel-Air

Former talent manager Sandy Gallin has sold his 42nd remodeling project. One of his additions to the property was a 140-foot infinity pool. (Everett Fenton Gidley)

Update: Talent manager turned home remodeler Sandy Gallin has sold his latest residential project in Bel-Air for $23 million.

The late-'30s Paul Williams-designed home belonged to "Father Knows Best" actress Jane Wyatt until her death. Gallin bought the house in 2007 for $7 million and remodeled and expanded it into a seven-bedroom, 12-bathroom home that blends Williams' traditional style with the contemporary architecture of Scott Mitchell. Among the signature Williams design elements is a two-story circular entryway with a sweeping staircase.

Gallin replaced Wyatt's terraced gardens with a flat yard and built three sets of retaining walls, one of which runs along the infinity pool.

The 12,000-square-foot mansion was originally listed at $32 million.

Kurt Rappaport, Westside Estate Agency, Beverly Hills, was the listing agent. Michael Libow of Coldwell Banker, Beverly Hills South, represented the buyer.

lauren.beale@latimes.com