These are good indicators of how they’ll treat your property and interact with you and your other tenants/neighbors/etc.Make sure to get references from at least two landlords or employers.

Which brings us to the kitchen.....which is the one place the photos are pretty clearly indicating a need for an update. 

Did the sale ad mention anything that would indicate why it is worth double what it was recently sold for?

Sorry I thought the topic title was suffcient enough to indicate that I am brokering the notes. 

And then the underwriter will see zero indication in the loan file, your financial history, the address your W2s get mailed to, bank statements, addresses showing on credit report, etc, that you did what you promised to do.

There are hundreds of loan products, points to buy down rates vary, points vary, closing costs can be different, lender's junk fees might be in there, the APR is a good indicator but then we have other aspects.

If you are really ready to walk, you can be more aggressive and within that same addendum indicate that Seller to credit "Buyer $2,000 towards your closing costs (or reduction of purchase price, whichever is better for you), or sales contract to terminate and Buyer's earnest money refunded in full."  

YOU WILL PAY A LATE CHARGE OF $2.00 FOR EACH DAY THE RENT I UNPAID BEGINNING THE 5TH DAY OF THE MONTH"For the record, my lease doesn't indicate when the notice would be sent out either.

Median house price is a big indicator for me.  

If you have a private lender (HML or private) that can lend on the project, sure, get a letter from them indicating their commitment to the project.