Out here, some properties run on propane, with a tank and its own lines, while others are on natural gas, and with either one, once the emergency is handled and the supply is off, a licensed repair is what gets the property back to normal. This service covers that repair, and in the country the runs can be longer and the setups more varied, but the work is still done by a licensed contractor.
With either fuel, a licensed contractor who works on gas finds the problem, at a natural gas connection or somewhere along a long propane run to the house. The cause might be a line worn by the weather, a fitting that has worked loose, or a connection at a tank or building. The contractor explains what they found in plain terms, with the options and real tradeoffs, and with your approval the repair is made and finished with a pressure test showing the system holds.
Planned work is handled the same way across the whole property, with new appliance connections, lines to outbuildings, the supply for an outdoor kitchen and relocations, each installed and tested before first use. Gas and propane both need careful work from a licensed contractor, and the longer distances out here make testing matter even more. For a shutoff repair or a new line, the first step is a phone call.