Rehab hidden costs

[Ben Raef]

I have never done major repairs/rehabbed a SF property. I have a fear that for example if there are heavy plumbing repairs that require a building permit/city inspection that the inspector may find lead paint or old wiring that doesn't meet current code......then empty my wallet! Are there any "skeletons in the closet" I should keep a look out for when purchasing a property? I don't want to get into a deal where I think there are only small repairs and then find out that something is not code compliant and then spend more money than expected. While I understand rehabbing is not without its hidden risks, I hopping to learn ways to identify the signs that indicate more repairs. Ben