What are the challenges of buying a very old house?

[Aaron Landau]

Hello all!

I am looking at purchasing multi-family house that was built in 1850s. I understand that a home this old obviously needs a lot more attention then a newer build. I am not looking for feedback of ROI and all the standard advice that people give who just flip houses, rent, and repeat. This is a great location where my wife and I really want to live, so we are very interested in this multi-family for personal reasons. I'm trying to do research on what I am in for with getting a home of this age. Does anyone have experience or insight into 1800s homes?

Also, as a side note the posting for this home says, "Buyers and agent to do their own due diligence". I personally do not like seeing this and find it to be a red herring for, "There is a issue, we know about it, but it's on you to figure it out". Does anyone else find that statement to be a red flag?

I would appreciate any insight - thanks!