Dogs used to calm a vetran's PTSD are both ES animals, and a medical alert service animal.There are many out there these days who take advantage of the ADA's broad use of the term "service animal", however, there are government  guidelines for actual qualification. http://www.ada.gov/regs2010/service_animal_qa.htmlhttps://www.nsarco.com/service-animal-certificatio..."

Sometimes you still find mortgages and trust deeds that can be assumed without any qualifications required.

That means they will look more closely at who is running the show, experience and qualifications. 

The ad listed renter qualifications,  and explicitly said "those with foreclosure are welcome to apply". and those with an eviction “need not apply”. 

It's also the standard for note qualifications. :)

The lender would include net rental cash flow as part of the income qualification for each subsequent loan to build the portfolio.My questions are:  is this standard practice? 

"Pooling" is addressed with respect to mutual funds and can be considered a security with 3 or more investors, qualification of investors also becomes an issue.

If it's a larger organization, feel free to inquire about their different staff qualifications.2.

When I got my mortgage bankers license I simply wrote into the state gave my qualifications and they sent me a license :)  and in CA you simply need a RE brokers license which of course I have had since 1975 .. then it comes down to contacts and networking. 

Do not compromise either the rent you are seeking or the qualifications for the tenants.