Kim Kardashian and Kanye West selling their mansion for $20 million.

Kim Kardashian and Kanye West bought the sprawling Bel-Air mansion in 2013 for $9 million, and they spent around $2 million renovating it.   

TMZ learned the home is going on the market in the next few days, and the asking price will be more than $20 million.  

Our West L.A. real estate sources say they will get what they're asking, and maybe more. The house is in a hot area of town and it's likely they'll get multiple offers which will trigger a bidding war.

Here's the real bitch of it all ... they didn't even bother to live there. They moved to Calabasas to live with Kris for a while, and then bought a house in nearby Hidden Hills.