It might be nice and perhaps of some comfort to know how many breakers are consigned to your 'unit' and their amperage.
One scenario we dealt with was the house we bought while in Houston.
2B-1Bth, a living room between the kit/dine with the previous outdoor 'porch' infilled to create a 2nd living room adjacent to the exist. living room that allowed for a fireplace. Doing some reno to merge the 2 living rooms into one and connect the kitch and dine....
,,,,the entire house had a 'loop ground' for the 2 wire service...black hot+white grnd, and No green common ground.
All 2 prong plugs, water heater next to the 100 amp fuse box...knob and tube era stuff...
That got reno'd First. The water heater (gas) got moved to the bed/bath side of the house was next...
Adventures in Renovationland...😏