I couldn't tell you when he moved in there as residential leases aren't public record, but someone else had posted a couple of screens and gave the name of the actual owner of the house, so I went to see if it was true.
When you type Kyanka into the Jackson County Missouri tax assessments search, you have to include at least a first initial, and this will return all of the property tax records for Rich and his dad. Now it's possible that Rich is actually on the deed to his mom's house and on the titles to the 911 and Audi along with his mom (the blacked out name from earlier), but I highly doubt it. It's probably his dad. When the record showing the Nissan Sentra is pulled up, it's saying it's garaged at the lawyer foyer McMansion. A screen of that was posted earlier, and I can post my own or anyone can look this up for free.
You have to go back to the address search for Jackson County and type in the address for the lolyer foyer house and then you get the actual owner of the property, which is a Chinese name mentioned earlier. However, his Nissan being garaged there proves that that's his current address. He definitely lives there, down the street from his dear Mommy. And I'm sure that rent is at least $2500/mo for that monstrosity.
Edit: Also note that the record for the Sentra is the only one listed under "Richard C Kyanka," the others are "Richard Kyanka and [mom's name]." When you're looking up dox it's not as simple as Google this name, because even with a name like Kyanka someone is almost guaranteed to have the same name, and those shitty stalker sites like Intelius gets people mixed up and combines records for different people all the time. Without a way to search by SSN (like a government employee, who would get fired for doing this for no reason), you have to look at other identifiers.