Multi-Family won't show until executed contract - Normal?

[Jerome Oddo]

Hello,

I'm a newbie.  I've been looking at a few MF Properties.  Most won't show until an executed contract.  

Is this normal?  Is it a sign of underlying issues?  Should I write something in the offer regarding the findings of anything "undisclosed"?

It will be my first property, yet I don't want to get handed a bunch of problems.

Thanks for the insight!