We (at least i think so) do a pretty good job of coaching and coordinating with current tenants during the last month so that we can show the property with a minimum of disturbance. 

After that if the first buyer doesn't want the property I have to start making up so many excuses and the seller gets upset because they don't want to keep disturbing the tenant.

It's not about "LOOSING" (spelled losing)  the job Tracy, it's about booking out your schedule to do a job and turning away other jobs only to get cancelled 2 days prior....This is very disturbing if this is your business practice...

The 4pm to midnight shift would be the better one to quit in terms of meeting most clients' time availability.I have to admit that I'm a bit disturbed about the phrase "trying my luck selling some homes".  

Most of the duplex listings show in captions: "DO NOT DISTURB THE TENANTS." in plural.  

Also the property may be occupied and the listing website mentions that you cannot disturb the occupants.There are big list of risks when looking into auction properties (Just  like court step auction- or trustee sales), and also dont be afraid to not get into it. 

After further consideration, I was pleased to remember that this is a forum for rational and responsible people, not those it-should-be-illegal-to-offend-me folks.My "crime free" lease addendum includes provisions allowing an eviction over suspicion of criminal activity, so I agree with @Chase Gochnauerthat the intent is to deal with disturbances, not provide for a penalty.  

Some of the language he has quoted back to me is disturbing but also clearly not conducive to any quality of life for him.

Especially if you are tiling floors, you don't want children walking over it while the mortar sets or the grout is finished, and I doubt seriously that they want their use of facilities disturbed.  

As for asbestos, if it isn't disturbed, as in busted into pieces and going airborne, it's not considered a problem, nor is it a problem.