Movin' on up! And out! Jennifer Garner is ditching her Pacific Palisades home that she just sold to Adam Levine and Behati Prinsloo for a cool $32 million and moving just a few blocks away -- closer to ex Ben Affleck, in fact -- for a few months while her new dream home is being finished.

The Peppermint actress has snatched up a $14 million traditional (see the gallery HERE) in the Riviera neighborhood, where she's expected to spend about six months while her Brentwood mansion finishes construction. We spotted her moving trucks unloading boxes into the house on Tuesday.

X17online broke the story of Jen's new dream home a month ago -- it's a downsized traditional (still around 9,000 square feet!) less than a mile from her current home that she used to share with Ben. But following all the work of performing the Super Bowl halftime, it seems Levine is ready to move in and get settled so Jen's gotta get out ... and her new house isn't ready! So she'll shack up in this 6-bedroom, 7.5-bath, 10,500 square-foot home while she waits. Hey, she may not want to move out!

The house has a stunning view of the Palisades and Rustic Canyon; it features a home theater, sauna and billiards room across three levels. Violet, Seraphina and Samuel will have fun here -- and they can walk to dad's house! There's a huge back yard with a pool and BBQ and the house is just minutes from Violet and Samuel's school. Morning drop-off will be a snap!

Meanwhile, Jen's Brentwood manse is getting close -- electrical is being completed and soon the finishes will start going in. So it'll be a lot of moving this year for Jen, but after all she's been through, we imagine this'll be nothing for her! And she's perhaps a step closer to inviting boyfriend John Miller to move in ... is that her plan for her custom Brentwood home? Will she and John SHARE a home in six months? Stay tuned!