My question is the old POS report that expired was valid for one year.

You need a different ac brand, it should definitely have a better warranty and a longer life. 

Of course, your opinion is just as valid as mine, and if it works for you, that's all well and good.True, you definitely do NOT want to give up a 3% loan....BUT there are numerous CREATIVE ways to build net worth FASTER than hold and reinvest cash flow.  

My lease says that the lease is not valid unless the deposit and rent is paid.

That is a very valid point.

Few more points:Their lease is valid till May 2025.This is the first time she even told me about mold.In the email she did ask me to settle the lease.I have a little less than a month of rent as security deposit, which I am ready to settle without any additional penalties for abandoning the property.At this point I am okay with her leaving the place, just I want to get the control of the property back to fix the mold issue.History:1) Recently the AC has been replaced and after that there was some intermittent issue with the installation (temp doesn’t reach target intermittently) and I had to call the tech back 5 times to finally get it resolved.2) Also last month I replaced electric range with Brand new Electric range.3) Two months back she said the refrigerator was leaking, I asked her to send picture of the make and mode of the refrigerator, but I never got a reply back.4) Also for last 4-5 months she has been asking me to send her 5-day notice so that she can claim reimbursement, I was sharing a document and she was paying the rent a little late.

These three cities from the rental income of $3,000-$4,000 list were on my list of markets to check out and helped validate my research even more:#20 Richmond, Virginia: Airbnb rental income $3,247#32 Round Rock, Texas: Airbnb rental income $3,418#53 Henderson, Nevada: Airbnb rental income $3,909It is broken up by rental income segments ($2,000-$3,000; $3,000-$4,000, etc.), so some numbers overlap, but there are some excellent data points to consider.

But the best ways to get started are, in my opinion: 1) save up enough for a 10-20% down payment and then save a lot more on top of that for reserves, overages, and any unforeseen repairs.    2) have your financial house in order and have credit above 700 to get more favorable rate and terms from lenders.   3) speak to a loan officer that is experienced with fix and flips and get the necessary documents together for a pre approval (typically not much required, usually a valid ID, LLC docs if any, and two months of bank statements showing funds for down payment and reserves). 

That's another thing.... there IS no signatures on the listing agreements except ours which would seem then it is not even a valid contract.

Those funds are valid if you supply the note and mortgage/D.O.T.