It's better than having two tenants that lie about it and then smoke inside.If you're worried about it, wait a month and then hit them with an inspection to verify.

I personally advise against buying a property sight unseen and recommend that clients come out to see the property once it is under contract, and scheduled for an inspection.

Just yesterday, I inspected a 31-unit building that is 50% occupied.

As long as everything checks out you could offer full list subject to inspection of property and financials and look for something out of order.

I keep in touch with the guy I sold it to (10 years ago) and he has had no issues with it ever since.If you are unsure, you could always get an inspection by a foundation specialist BEFORE purchasing.

Also, see if the inspector could explain or walk you through what he or she does during their inspection or what they look for.

These units were build in 2007, and the pictures of the units look fairly good, but again, until I physically get to inspect it with an inspector and my contractor, this is just an estimate.  

If they pick out certain items that would require a more detailed inspection they will note it in the report.

A non-exhaustive list of closing costs includes loan application fees, points, prepaid homeowners' insurance, appraisal fees, inspection fees, transfer taxes, escrow fees, attorney fees, recording fees, prepaid interest, prepaid private mortgage insurance, title insurance, and title search costs.Hope that helps.

Best bet is to get inspections and or professionals out to assess the systems and provide estimates.With the roof 20-50 years depending on the climate, area, type of shingle and type of roof.