I know why, and it really is peeving off some people from those areas...whilst others are somewhat happy their real estate is going up. Californians are moving to Nevada in droves...and with them used to buying and selling land at exhorbitant prices...well...they are upping the cost of land. They are willing to pay more...but also sell at MUCH higher rates. The first ones came in some time ago...bought plots for around 130,000 to 140,000 and tried to sell them for 250,000 right off the bat. People laughed at them.
However, more Californians came and were for some ridiculous reason ready to pay higher prices. So that screwed that...and then investors came in that wanted to invest in this land price increase...
It's great for those who owned houses there and buildings there already...stinks for those who are new and want to buy a house. Land selling for two times what it's probably really worth...and some of those places with absolutely nothing really of use.
However not all of Nevada is really terrible. A lot of the Californians seem to want to live in the Northern area bordering the California mountains.
The other reasons Californians move to that area of Nevada is that they are close enough to California to go shopping and even to work sometimes...but can avoid the high taxes of California.