I had a contract to install central vac in a IHOP. Seems a local firm was the GC for all IHOP locations.

Jumped through the hoops, and did that install.

Next thing I know, I'm going way out of state to don another, and another, and getting paid crazy money to travel to the various locations. None of which were within a 8 hour drive. Usually had to drive to these locations to take supplies, and had to make two trips of course.

Also got a referral to do a system in a medical facility, but that one went south as the plumbing contractor thought they should be doing the job. They went in and sabotaged the job, plumbing firm was fired, plumbers buddy who the GC's super, got fired, and the system was so messed up it couldn't be fixed.

That mess left a sour taste for commercial. Never really wanted another. Although I did get a referral for a retail store sound system that I took on, and it went well.

Keep an eye on your tools, and the wiring you do. If it's on a union job, there are some that will trash your work.