I told the loan officer during the application process, and he said that as long as they keep getting paid, they really don't care, since I am still personally on the hook for it.  

@Brandon Turner - thanks for the keyword suggestion - I spent lots of time fiddling around with them last night; it'll probably take some time fine-tuning to find the most applicable ones!

Im wondering how many people also use this on their application and what type of feedback they get from tenants from having to provide account #'s on the application.

Have you seen the applications? 

These are assumptions, but the holding costs (taxes, insurance, utilities, financing if applicable) over the next few months combined with the selling cost (commissions, transfer tax, seller assist if you're selling to FHA buyer in a lot of cases) you're looking at about 85% of your ARV left. $90k x .85 = $76,500 - less repairs $25k= $51,000 - less acquisition $40k= $11k net profit.Consider the remaining profit you'll receive once this profit is split between partners and after taxes.I'm working on a similar deal right now and thinking that I will rent it out since the profit margin is only around $10k. 

Besides the "dont you trust me" question adding her to the application may help build her credit as well.Good Luck!

My approach, assuming the lease language is silent would be to require them submit an application and get his mother approved.

I am looking for someone who can do multiple properties; offer a hefty umbrella across numerous properties; and also do Builders Risk vacant home when I rehab.

.,, they discovered it (I had purchased after I filled in the loan application for mortgage #4),they said that required mortgage #4 to be counted as my 5th mortgaged property, so I had to follow th guidelines for 5+ for mortgage for #4 and all future mortgages (make sense?).

The lender may have you fill out a credit application and pull your credit but those are not likely to be the factors that determine whether or not they do the loan.