Install it yourself. I had to run my 3/4" gas line probably 110' through the ceiling of my basement, through the garage and out the back wall, underground using polyethylene tubing and risers and back into the detached. I probably spent $400-500 on supplies (risers for underground were about $50/ea). I actually got everything ran and pressure tested (with a gauge for about 4 days, didn't budge). Then I needed to tape into the 1" feed about 3 feet from my meter in the ceiling of the basement, I figured I would pay a plumber to do that. They wanted $1,000 just to connect that point. I said screw it. Bought the black iron slip joint (
https://www.menards.com/main/plumbi...pipe-union/310u-38/p-1444437561777-c-8564.htm), turned off our gas, drilled a small hole in the line, blew air into the line to clear any and all residual gas, cut my line with a sawsall and installed my slip joint along with a couple T's (for potential future addition), all for about $40. Took me about 2 hours, only cause I was taking my time.
The scariest part is making sure the gas lines are sealed. Use good pipe sealant and tighten the joints really tight (not like superman, but make sure they are tight). Then, invest in a pipe pressure gauge (
https://www.menards.com/main/plumbi...mbly-gauge/0069780/p-1444446180261-c-8523.htm). Screw that on, apply pressure (probably max of 10) and leave it on there. If it moves less than 1psi over 4-5 days, you're golden. Natural gas only runs a max of 1 psi once it goes through the meter into the house, so it would probably hold 3-4psi indefinitely.
Once you do that, you can be pretty confident it should be good. I would recommend doing this check on the buried line BEFORE you bury it. Thankfully I didn't have an issue, but it is worth checking, so you don't have to dig up your line and find the issue.
I don't know about Canada, but in the US you use polyethylene underground for gas. Here is an example:
https://www.homedepot.com/p/HOME-FL...3dIFPb9MNj1bo_XxpzgaAm_8EALw_wcB&gclsrc=aw.ds
I rented a tool to melt the lines together from a local supply house (kinda like this)
, but it looks like they sell connectors for the lines now too.
