I would love it if the metal scrappers would stop buying small amounts of copper.. that right there causes a lot of harm to landlordssome of these ya hoos  will snip a 8 inch section of copper tubing .. there by ruining your system to get 1 dollars worth of copper.. and cost us 1500 to 2k..  

Construction is solid but you may find asbestos, knob & tube, plaster and lathe, etc... 

I  don't believe everything I see on U tube.   

A 3 dollar tube of caulk or 4 dollar NP1 will do wonders for your Tylenol expenditures down the road.Note, if you live in Cali, that NP1 might cause cancer lol. 

The plumbing and roof is good the electrical has knob and tube wiring this is why I was told to gut the whole building.

There was dead air space at the front due to no foundation ventilation.Damage- the front sill and sub floor, the center beam, damage under some old plumbing at the rear center; tube scarring on numerous floor joists.

Knob and tube wiring, load bearing walls, and the fact it is a 118 year old meant nothing was square.

,Here is the text from some prior posts I did that will give you lot of basic info:When deciding on a property here are some things to look for from an Insurance prospective:1.Any in-ground tanks (active or inactive)2.Any Knob & Tube or Aluminum Wiring3.If built before 1978, does the building have Lead Safe certifications4.Any wood stoves or secondary heating units.

@Ho Eun Park two things I’d recommend are you tube videos and listening to Gary Sullivan’s home improvement show.

Its self hypnosis or better yet, neuro linguinstics planning; NLP. look it up on you tube along with you are creators.