"It's a co-parenting model, it's a co-economy model, and it's a really great friendship and support model," Pfefferkorn said.
It's been "amazing and challenging," Pfefferkorn said, especially as both kids grew up, and one brought a grandchild into the home.
"We're at a time now that our expectations for what success looks like is very different," Pfefferkorn said.
For Pfefferkorn, the next dream is to buy an eight-bedroom house to turn into a communal retirement home someday.
"My friend's mother is selling her house, and she has an eight bedroom house," Pfefferkorn said.