Baby's Going to Blac Chyna's House and So Will Rob, For Now

Blac Chyna and Rob Kardashian still have separate living arrangements -- and that won't change before their baby arrives -- but they've got a co-parenting plan in place ... TMZ has learned.

Our sources say Chyna's house is going to be home base when the baby girl is born next month, but Rob's not dodging diaper duty. We're told he and Chyna are getting along well right now, and he's been staying at her house for a few weeks.

The plan is to share parental duties at Chyna's nest, but Rob isn't selling his Calabasas home just yet. Fact is ... their relationship is volatile and when things go south, Rob retreats to his place, we're told.

But for now the plan is to be one happy family under one roof, and ultimately find a new house. Rob had been looking, but didn't find anything.

We're told they'll start looking together after the the baby's born and things settle down.