The people within your subdivision may sell the house for you, as they may have family/friends who want to live close to them, and people are always intrigued by new construction in their neighborhood. 

My wife's siblings have built 2 house on this land as there own houses they are living in The property is a total of 15 acre and each siblings got a portion of the property.

It is my understanding that people refinance and then use those funds other ways (personal living, investing, some to buy another property) as a means to minimize tax obligation. 

For context, the tenant is an elderly lady in her 70's who lives alone.

I'm sure they also told you their systems will protect against aggressive attorneys and creditors and make you invisible so nobody will ever dare file a claim against you...it's all a money grab.If you are a sole proprietor I am putting my money on the fact a single member LLC in the state in which you live/own real estate will suffice.

I used to live in Katy and still flip in Houston, but recently move to Florida. 

I live in Buffalo NY and have not seen much going on at this location. 

. - The ultimate house hack, live in the small ADU unit and rent out the two levels of the main house on AirBnb in San Francisco (I would have thought STRs are oversaturated in S.F. but it worked for them and they stay fully booked).

My son wants to move to Sacramento, his friends family lives there. 

I live in Detroit but envision running the investment as a business, not a third job: Pay top dollar for the best PMC.