That said, you can expect general ranges based on industry prices. The national average gas line installation cost currently sits at around $1,360. Still, prices can range between $120 to $6000, depending on what you want.
New in-home gas lines almost always cost more than outdoor ones. Fireplaces or furnaces often cost around $700, while stoves dip to $90. Hooking up appliances to an existing gas line hovers near $740.
Regardless, always ask for a free quote when consulting a plumbing company.