Will a gas line for my grill be buried?
Most likely the contractor will route the line through the basement or crawlspace, and emerge from the back of the house near where the outlet will be.  Snaking around the outside of the house (even underground), is more difficult, and may make the pipe more susceptible to damage. If the piping has to travel any significant distance from the house to the destination, that length of piping will almost certainly be buried. Depending on your location, the piping will be buried anywhere from 18-36&quot;.
Notes:
If you live in an area prone to freezing. It may be worth asking the installer to install a shutoff where the piping splits off from the main line, and at the end of the run.  This way you can turn the gas on/off at the grill during grilling season, and shut the whole line off when it's not grilling season.