We're told the Bel-Air home, purchased for $88 million back in 2017 is still "home" ... close to the kids' schools and friends.Eventually, our sources say, Jay-Z wants to move his family to the Malibu estate full-time ... but hasn't indicated whether that shift would also include selling Bel-Air.TMZ broke the story ... the couple paid $200 million for the 30,000-square-foot mansion, setting a record in the state of California for the most expensive home ever sold.