Many investors lost their commercial properties in 08-09 when the credit markets dried up.

You're right, the part that makes me most nervous is having enough excess cash for the loan payment and renovations.

Thanks to a tenant not reporting a leaking toilet her new lease states if more than 30 CCF of water is used in a quarter they're responsible for paying that amount (above 30 CCF) as well as the excess sewer consumption charge.

If someone comes into excess cash is it better to pay down debt and then invest in a property or to invest in a cash flow property and use that to pay the debt?

So many questions but don't want to suck you dry of time/resources while I still have clearly a lot to learn about the basics.

I didn’t do anything except number 4 and 5 (I left the excess garbage on the curb in plastic garbage bags) and for the light switch.

Rather than walking away, I had my clients ask for a full 3% seller concession (about $8000), and use the excess to buy down their rate.

If the air is to dry and or to much moisture and doesn't circulate properly then a lot of problems can happen even with no water leaks.

Is the market drying up?

By paying down a mortgage quicker all you are doing is hoarding your excess surplus cash.