- Since I already own 1 other rental property that I purchased last year (not including the one I'm selling), I'm concerned about getting financing on 2 other properties, which could total up to $700k in value if I was putting 20% down (the $140k).   

It’s very unlikely to have been related to the home’s systems, since it’s a brand-new house.I believe I have a handle on how to proceed, but I’d appreciate any advice on how to handle security deposits with regard to cause, and tips on dealing with insurance.  

Only reason I could come up with is seller concerns about financing falling out.

If something breaks between pre and post walkthrough its far easier to identify the tenant causing the issue.Tenant screening is important; some folks have suggested some ideas to help.

I think you should protect your asset as much as you can, cause you will be left holding the tab sooner or later. 

I don't know how much maintenance that will cause.

The Chinese have lots of methods to cause problems. 

He agreed that the roof needed to be replace and that the roof was not the original roof and that it was wind that cause the damage.

Now I have a new house with an old chain link fence which I don't think will look great once the project is finished and can cause problems when it comes to selling the property subject to half of the property being sold off. 

Follow-up with an attorney if you are concerned about liability.I don't have any direct advice for you without knowing your situation and more details.