But if we add all the rentals sure DTI will be over 50%.The above Fannie/Freddie links are keeping you from double counting the payments on the personal AND LLC level.

As a Spark investor, you are effectively paying double fees (Rise48's and Spark's) and then the cash flow coming from Rise48 is stripping 30% off for their carry, and of the remaining, Spark is stripping another 20% for their carry.  

The main guide lines focus on it being on a permanent foundation (Concrete slab), Hurricane tie-downs if you are in FL, GA, LA and a few other states, must be a double wide and not moved from another location.

It is a double close transaction where the 1st position lender will not fund until the 2nd position seller docs are signed and funded.  

The challenges include - Interest rates - that are as high as they have been in 20 years; property values - which have doubled and tripled in the past 3-5 years.  

This said, I wanted to inquire/double check with some fellow professional title agents that I've got all the "rocks" I'll need to flip over neatly accounted for when dealing with *city properties.

According to the rule of 72 you are doubling your money. 

Double that for todays market.

It was nightmare after nightmare with this guy to the point where I double checked his licensing, but apparently there are no real qualifications even for commercial work in NE?

One of the structure that was recommended by a US-CAN CPA to avoid double taxation and stay protected was the following: Real estate A is owned by LLC A, Real estate B is owned by LLC B, Real Estate C is owned by LLC C (or you can put some of them together instead of having many LLCs).