So another layer is this is purchased as a primary for finance reasons, but is intended to be an investment. 

Buying below replacement costs is one layer of redundancy, large down payments to keep your payments low is another, large cash reserves, geographic diversification, other sources of income, etc. etc.  

I would only take up the floor if it had multiple layers and was very uneven.  

Syndicating deals adds a layer of complexity, so just make sure you are wanting to add that complexity to your life/business. 

But this is not what I was asking about.I just need to know what we can do to be able to go through with this deal withoit testing/fixing now, before sale and still be be protected legally - short of buying the house, testing, finding there is some lead somewhere beneath the many layers of paint this house must have collected since the 20's (it will be for sure), kicking the renter out to fix the problem by paying a lead cert contractor to strip off all the paint (large expense).We cannot do this now - or maybe not even later.The seller (current owner of this house) bought in 2014 without testing and simply disclosed "I don't know". 

It’s all a layering effect though.

Second, they can only add an additional layer of encryption between you and themselves, but they have to decrypt that traffic before they send it out to wherever its supposed to go.

This was an extra layer of protection that makes it more difficult for someone to get at your assets? 

Hopefully your situation isn't that bad.BTW - you should have a respirator (not just a surgical mask) that's designed for mold. 

Smell the couches, drapes or anything that may retain smoke smells because they can easily air the place out and mask most of the smell with scented candles, incense, etc.2.