Gas supply adaptor?

gas lines are usually yellow plastic. And yes it should be sleeved. Or go thru the rim joist with a steel nipple.

I don't see no plastic gas pipe there. That fitting is an extension coupling from what I can make of it. I don't like the condition of it and would replace it ASAP.

Hello mferrer,

I watched that exact procedure or repair being done decades ago. The gas meter was in the basement so that special fitting / interface coupling was on their side of the meter.

If I recall correctly there was a small leak issue out near the street, at the shut off valve or the connection to the main or just in that area (I was initially unaware of it). Also talking with the workers, at that time they did not want to relocate the meter outside the house, they just wanted to fix the present issue.

What the Gas company did is they shut the gas off at the street, disconnected the meter and the specialized meter piping bracket, also removed the piping back to the gas service entrance pipe coming through the wall. Out near the street they dug up a small area and cut the service feeder pipe to the house about a foot past the shut off valve (towards the house). Then they used the old steel pipe as a conduit and pushed the plastic pipe through the old pipe (maybe 30 feet). With that special coupler inside the basement it makes a gas tight connection to the new plastic pipe and screws onto the old steel line for support. At the street I believe the new valve and the connection to the main was all done with plastic. The meter and the piping was all reassembled. They may have also re-lit the hot water tank. A week or two later a contractor repaired the minor damage to the lawn.

Since your daughter's pipe is severely dilapidated I would look into the situation. Or at least temporally support everything so there is no weight on the dilapidated pipe and the plastic pipe. If it is on the Gas companies side of the meter it may be their responsibility and they may repair it, although it is her wall. I suspect it is their responsibility, but the rules often change with time. If it is the home owner's responsibility and the Gas companies inspects it and deems it unsafe they will shut her off and tell her to call a Plumber.

I would call the gas utility. As others have mentioned if it is before the meter it is a utility issue. After the meter (which must have a shut off ahead of it) it would be the homeowner's problem.