NASCAR young gun and 21-year-old Sprint Cup Series Rookie of the Year contender Kyle Larson is now a homeowner. Larson - who's won two Nationwide Series races so far this season - tweeted this picture of his new abode on Monday ... it's not your typical "starter" house.

The outside looks amazing. What's it got on the inside? We're not sure, but Dale Earnhardt Jr. took a pretty awesome guess.

Brad Keselowski added a couple more ideas.

Were they close?

Congratulations, Kyle. Let the flood of houseguests begin.