Re: Supply pipe location
Slightly different - where my house was built in the 1920s and it is waaay back on the lot.
The city was replacing gas lines recently and first they used a tool to check/measure the existing pipe. Unfortunately their tool had a limited reach, designed for modern homes located nearer the front of the lot. They finally ended up estimating from the location of the meter.
Luckily it doesn't interact with my cable (at least I don't think it does).