So we had our central HVAC burn up, and I bought a mini-split heat pump to replace it, because the HVAC companies around me don't do mini-splits. Apparently they also don't just remove old systems unless they are replacing them. So for 30 minutes of demo work, they charged me $2900 to just remove the old system. I need to install the mini-split myself still, but for now, to get me through the summer and fall, I have a couple window units.
The electrical work I need done is because the previous owner (my grandfather-in-law) built the house and did absolutely NOTHING to code, and inspection found none of this. There are splices in the walls, there is yellow romex being used as power lines to sub panels across the lawn, strung from tree to tree to keep it off the ground. The electrical panel is installed 5-inches from the washing machine... where there is water, and lots of it. There are 4 sub panels strewn throughout the house - it is 1300 square feet. There are random nutted romex wires just poking out of holes in the walls. Basically we need the entire house to be rewired.
Same with plumbing, there isn't a single valve in this house. Everything is plumbed directly from the cold or hot lines. So when the shower sprung a leak, we had to turn the mains water off, rip out the shower to fix it, then re-install it. And that is all over the house, as well.
Don't buy a house built by a family member, even if that family member is a GC that builds houses for a living, because they aren't getting paid to build their own house, and will 1000% cut every corner known to man.