I posted here a few years ago about an issue with a breaker. Well we finally got around to having an electrician come look at doing the job. The house was built in 1967-8. My grandparents were the original owners. The main panel is a 100amp Zinsco with a 50amp sub upstairs. We have underground service that I discovered originates from a transformer/distribution box in the backyard of the house behind mine. We are planning on upgrading to a 200amp main, either Eaton CH or Square D, haven't really looked to see which will fit the best in our semi-flush mount. The upstairs subpanel is a vertical one and the electrician said he can get one of the retrofit kits that replaces all the guts while re-using the box so he doesn't have to take out and drywall. I am also having the electrician run a second subpanel to my office since I plan on putting a server setup in there. Also having a 208/240 outlet put in the garage for future plans of teaching myself how to weld. Also the house does not have GFCI or AFCI outlets which we will have to add in order for everything to be up to code. I went around with an outlet tester and the same outlets were showing "correct wiring" on one and "open ground" on the other. The electrician came out to check everything out on Friday and said he should get the estimate to me this week for all the work. He said a rough ballpark is in the 4-6K range with the big variable being the trenching required for the upgraded service and replacing any aluminum wiring he finds. He said that our power company, SoCal Edison, is currently taking about 4-5 weeks to come out and pull a meter and once that happens he will be at the house 2 maybe 3 days. He came highly recommended by a close family friend that is a master plumber as well as other trades people that have come into my work and have worked with him on projects. I told him I wanted everything permitted and up to code. My mom and I have been putting money aside for this and actually expected a lot higher.