Greatest issues of old properties?

[Greg Lott]

What do you look out for and what questions do you ask when buying old properties? I just visited a 4plex built in 1806 that looked great on the inside, but quickly realized I didn't know what age related questions to ask the agent about the property. What are the greatest issue's with old properties that you've experienced?

[Derrick E.]

Wiring, plumbing, structural problems, old windows, does it have HVAC?

I buy a lot of older homes and those are usually the first questions I ask.