Underground Propane Tank

[blake5676]

Natural gas not available. Otherwise I wouldn't be asking. But from what I've read, shouldn't be too big of a deal to still have gas in the house by burying propane. I guess outside of cost and people's opinion of whether a buried tank is smart (seems like a common solution although apparently most here haven't seen them) I was wondering if there was a downside to propane vs natural gas. Efficiency, heating capability, etc.

I appreciate the feedback thus far!