I have had a few deals "stolen" after sharing too much information.

Do you have to worry about things like TV's getting stolen? 

This is especially true if they invite others to the property -- others who they may not know well and who won't bear any responsibility if anything is stolen or damaged.

What if the lawnmower gets stolen?

https://help.venmo.com/hc/en-us/articles/217532097-Can-I-use-Venmo-to-buy-or-sell-merchandise-goods-or-services-I wouldn't want to take the chance that the other party complains, or that Venmo catches wind of it and pulls money back because of transactions against their terms of service. 

But more concerning, the other two units have reported broken windows and stolen window AC units.

We send it out for our stone cabinets appliance paint etc I pay with my american express so if something is damage or stolen not a problem or if I have a problem they handle it like the mob plus with the points I use it to take me a trip with the family after every three or four big jobs, Good luck to you.

They should be able to chain the bike to something so it does not get stolen.

It was later that I realized, due to her lifestyle, it was probably not "meat" that had been stolen.

Think inventory like buying and selling cars or merchandise on a web site.