People are much more likely to tell you, "We'll think about it...we have a couple more places to look at", than they are to tell you "I have a criminal record/bad credit/eviction record/whatever and don't think we'll qualify for your rental".Of course, if your rentals are overpriced, and they are able to find comparable housing for less money, then that's another possibility as to why they aren't coming back to complete an application.

There may be investors willing to fund a deal for you, but this will be tough with no track record.

Unfortunately, I had not recorded my mortgage deed to facilitate additional rehab loans, so I ended up as last person holding a loan and lien. 

That presumes your partner wants to record a Mortgage or deed of trust. 

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

You would have to check on the laws governing your area to see if they are similar.You might also check with a Veteran's Service Organization (like Disabled American Veterans (DAV) or the Veterans of Foreign Wars (VFW)) to see if there is a possibility of appealing the decision that your brother's injury is not service-connected.

Buy buildings with your own cash and track record.

You need to secure right of way from a neighbor first (recorded easement) otherwise the property is pretty much useless which is probably why the current owner is trying to sell it.

It can also make the process require more money because most lenders want a larger down payment from an LLC with no track record and you may have to personally guarantee the loan anyway.

There can be a ton of paperwork, and some banks can get caught up in bureaucracy, but environmental inspections, appraisals, any other "Phase 1's," etc. are all standard.1 - I'd say 60-90 days is a generous closing period for a property & buyer both with good records and have their ducks in a row.2 - Of course.