I hired TE for my NEMA 14-50 outlet despite the high price. They required the city inspection, which as someone else has said, took all of 30 seconds.
To reach my electrical panel, I had a long run through two interior walls and down through the basement. I paid about $1000 all-in. I believe that's probably 30-40% more than a cheaper company, but TE had good reviews and I have no complaint with the work that was done.
If you get TE to do the wall connector, get the hardware from Tesla in advance. TE wanted $625 for the wall connector, which is sold at Tesla for $500.