You just want to ensure that all of the major functions have been upgraded - like no more knob and tube wiring, for example.

I follow you  and your team on you tube and get email updates from you. keep up the good work!!

The house had 100+ feet of sill/termite damage, rotting joists under the bathrooms, no recoverable plumbing, no recoverable HVAC systems, no recoverable interior wiring (original knob & tube), and "dead" plaster falling off half of the walls. 

Outdated plumbing, knob & tube, asbestos, mold, wet basement, deteriorated roof and exterior siding and trim, functional obsolescence, etc.I also look at the surrounding area. 

It's an old old building and we suspect this happened from pulling some knob and tube in the basement during the sale for insurance purposes.

We've opened walls to find hidden knob and tube in service.

you can you tube her and google her book 

I am a contractor , I dont supply a count of 2x4's and prices , tubes of caulk and gallons of paint .  

Fortunately, it is not knob and tube.

I'm 60 now when I was a kid, they told us we were all going to be in flying cars by 2020, we were all going to be eating food from tubes like the astronauts , YEAH RIGHT!