Kim Kardashian and Kanye West's Hidden Hills mansion is clearly turning into a money pit ...

The couple have put $10M into the home they bought for $20M two years ago and the project just gets further and further behind as Kanye's diva ways have plunged the palace into a never-ending state of renovation. And guess who's paying for it all ...

Kim reportedly complained to sis Khloe at the final taping of Kocktails with Khloe in April, that she was fed up with the situation, according to TMZ. Their sources say Kanye would make a decision on the design, contractors would execute it, West would complain and have it ripped out and redone. And that's happened over and over and over which means the punch list for this Valley manse is now longer than ever and the couple is even further away from the home being ready to move it to than they were earlier this year.

Home drama, along with a laundry list of other complaints, seem to be pushing Kim to her limit ...