If the residence is inside a gated subdivision or a controlled-access buildingthat is governed by an owner’s association, a letter from the association acknowledging the use and grantingaccess to occupants of the rental unit will be required as part of the application.A short-term residential rental requires a Conditional Use Verification (CUV).A short-term rental use is unavailable and prohibited within a residential unit or a room within a residentialunit that is located in an apartment building.

Sponsor quality far surpasses the "deal", assuming a qualifying criteria for a "good sponsor" is that they don't buy crappy real estate deals to begin with.Having said that, if a great sponsor is offering a deal you don't like for some reason, don't invest in it--just wait for the next one. 

In 2017 we started our journey with long-term buy-and-hold investment properties in the Memphis, TN area after selling a property that we were losing money on every month in NOVA that we purchased as a primary residence in Jan 2007 (talk about all-time bad timing) and then had to move with the Navy in 2009 (2nd all-time worst timing).

However if you are attempting to use rental income for your departing residence that's where it will be a little tricky... 

This means that you will probably need to pay registration and filing fees in at least 2 states if you don’t buy CA property as a CA resident.Be sure to tell your accountant that you may now need to file non-resident income tax returns in each state where you own property as well.

(It's funny now) I hired a property management company and sure enough they told me the best qualified renter was the one who wanted to do a 9 month lease and pay it all upfront.

The whole scheme was buy a foreclosure, "sell" it back to someone that can't qualify for traditional financing with seller financing at a higher rate, once note is "performing" you can sell the note and make a lot of money. 

Additionally I don’t want to dip into my personal primary residence rainy day fund.

There are exceptions, like what was mentioned by @Nathan Gesner, if you are an employee of the property owners, and you exclusively manage their properties, if you're a resident manager, living in the building that is being managed, or if you are someone who manages properties owned by a single entity and have a direct ownership interest in it.

Quote from @Roy Lam: They only qualified for two bedrooms voucher, but i have a three bedrooms  singles house.