So for now I got denied unless I either:Make more money: I work as a substitute teacher and math tutor for my university so that isn't going to happen.

If in my example above the transaction were to fail / be denied then I will deal with that just like a bounced check.As for the current situation, I emailed the tenant last night and offered to waive the late fee, recognizing her good track record up until this point....as long as she signed a very short lease amendment I put together that clarifies the particulars of the situation and what is considered "on time". 

They legally cannot deny a loan for a property in a given area, that is an illegal practice called redlining.

So I was trying to apply in realty shares and I got denied!  

If their measures are off, then its still in the grey area, if he denies it in court, you still lose, since you have no plans, no contracts to back it up. 

53% DTI will mean you will get denied as you can't include the rent unless you've been a landlord for 2 years.

It's amazing all the BS you have to watch out for as a property owner.I got a letter from an inspector that someone at a property I own had been involved in illegal dumping and I had to pay a $525 fine.I asked the tenants if they knew anything about it and they denied involvement.I tried calling the inspector every day for a month and only got a voicemail.

Can you deny a tenant that does not meet the rental requirements but has A co-signer?

They worked just as hard and should not be denied because they have less money.

More likely to be an unbiased report as there is no chance of Bob trashing their apartment for giving a bad reference.Since you have already complained about his behavior to his current property manager you are probably justified in denying anyway.