Celebrity Realtor Josh Altman Says Ben & J Lo Will Take Loss in House Sale

Josh Altman says Ben Affleck and Jennifer Lopez‘s mega mansion is appropriately listed at $65 million … ’cause they’re probably gonna take a hit, which is factored into the price.

We caught up with the celeb real estate broker — who’s repped a ton of stars in his career — in L.A. Wednesday, where he told us why he thought the high price tag for their crib, which they’re trying to sell quietly, is actually perfect … getting into the nitty gritty with us.

Check it out … JA says he’s very familiar with their property, and thinks they got it for a steal at $60 mil when they bought it last year — but because of the new mansion tax in Cali, not to mention commission they’ll have to pay … they’re already in the hole at about $6 mil.

Because of that, he believes Ben and Jen’s managers have told them to try and sell this palace at $65 million — which, if they can get it, will allow them to basically break even.

While Josh is optimistic they can get that … other sources have told us they stand to lose a lot more — at this point it remains to be seen who’ll bite … if anybody.

Josh had some more insights for us in this chat — getting into the fact that stars regularly buy and sell houses in short windows for a number of reasons … although, in this case, it seems obvious that BA and JL are trying to unload because their marriage is on the rocks.