Ben Affleck Closed on $20 Million Mansion on Jennifer Lopez’s Birthday

Ben Affleck secured his new digs at the same time Jennifer Lopez celebrated a milestone … ’cause he officially snatched up his lavish mansion while J Lo blew out her candles.

TMZ has confirmed Ben received his own little present on the same day Lopez turned 55 — closing escrow on his $20 million Los Angeles mansion.

Worth noting … Jennifer made her own real estate move on her bday too, finalizing the sale of her NYC condo on the same day — selling her four-bedroom, 7.5-bath duplex in the Big Apple for $23 million after years of searching for a buyer.

She also had time to post a smokin’ hot thirst trap on her 55th … so, the woman’s got multitasking down.

TMZ broke the story … BA purchased the five-bedroom six-bathroom Pacific Palisades home, complete with a den, walk-in closets, media room, powder room and guest house, for $20.5 million — a move that makes divorce from Lopez seemingly inevitable.

There’s one piece of business for the couple still outstanding … the couple’s $68 million mansion. It’s still on the market — and, at this point, the couple’s clearly trying to get rid of it because the price tag means they’ll barely break even.

The two got divorce rumors swirling back in May … and, we reported in early June it looked like the couple were heading for Splitsville before J Lo ran off to Europe to vacay with friends.