All solid stuff here so far. In Florida, we have 4-point inspections that are recommended anything 15 years or older, and outright required on 40+ for most carriers. It'll tell us all those details.
But for rough guesses, we ask when water heater was replaced which count for a plumbing update (most carriers ask if partial or fully, just note partial).
Same thing for AC unit: ask last time they think it was replaced, then you have partial update info on that PLUS if that's been updated, you know some level of electrical components had to be updated during that time as well
But for rough guesses, we ask when water heater was replaced which count for a plumbing update (most carriers ask if partial or fully, just note partial).
Same thing for AC unit: ask last time they think it was replaced, then you have partial update info on that PLUS if that's been updated, you know some level of electrical components had to be updated during that time as well