I'm, therefore, exploring options for private or hard money loans, in order to follow-through with my purchase offer (the seller is elderly and unwilling to engage in an owner contract).

In the movie an elderly man is evicted.

Currently the seller owner/occupies the 3rd floor and rents the 2nd floor to an elderly Aunt, and first floor to her nephew and his wife.

@Sal DeMarco  being desperate and being full of desire are two different things.you can leverage into and get good deals on MHP that are full of Junkers and tenant base is basically pretty rough... you get those from burnt out landlords.. or elderly people that finally give up after owning them for years and they let the park get to a state that it is not financeable.

I learned that with jobs, I was trading my time for money -- and with elders, I was trading my personal freedoms/philosophy for money. 

Low income frail elderly, low and moderate income veterans plus people with disabilities is my focus.

Unfortunately, when we get to be elderly it’s not always what we want but what is best for their quality of life.

@Ayana MillerWhen looking for strictly owner financing, I suggest looking for elderly or "tired" landlords, who want to get away from being a landlord.You can ask for a Master Lease Option (basically like a lease option, but tailored to rental property that you plan to hold on to,) Subject To (if there is a loan in place and you take over the payments - if there is equity you can offer a promissory note or second mortgage for the difference,) straight out owner financing for at least 2 years, so then you can be in a position to refinance through a portfolio or conventional lender.As far as interest rate, you can try with 5%, but most of them are looking for a better return than other investments like IRAs, so 6% or higher are more appealing.Usually you can finance 100% of the price, but most of these properties might not be in the best areas of town. 

Oh I also was thinking like Elder Care or Pet Care & Services!

I doubt anyone here would badger their elderly Parent to spend 5k just because they have to move some fuses around once and a while.