Properties that are old- anything to be aware of?

[Young Kim]

Hi biggerpockets fam!

I was wondering if there are any cons of purchasing properties that are pretty old (built around in 1950 or even older than that). Many people think old properties will have a lot of maintenance to overcome, but people who say so don't know which part to worry about specifically. I was wondering if I can ask your your honest input on this. What can go wrong from purchasing an old property? Should I still worry about it even if it has been remodeled? Or if I just do the inspection correctly and spot the issues, will it be okay?

Please let me know, by the way, I am talking about properties in Southern California in case it varies by regions.

Thank you so much yall!