I found a buyer who would buy Lot A for 1.1MM and Lot B for 300k, for a total sale price of 1.4m I owe about 480 on Lot A, and own Lot B free and clear.The way I set up the sale, was for the buyers to purchase  Lot B cash for 300k, (So they would essentially own Lot B outright, but I would have a first position lien securing Lot A) and Owner Finance Lot A with 180k down, leaving a balance of 920k on the loan. 

We did not get a tenant for the house until March 26th 2019, essentially two months later.

Otherwise, as far as I know they are essentially squatters. 

Essentially, what are the terms? 

Housing would be considered essential by any custodian.

I have a home of my own and am currently paying the mortgage off of that one with the help of having some rental one of the bedrooms out.I do not want to miss this oppurtunity as I can use my current home when I take over my parents as some kind of investing property (more or less, rental)Although when this time comes around, I will still be paying my own house's mortgage, they essentially will be still living there paying me rent for the mean time as they wander to look for a smaller property for retirement.Any advice on what I could do?

Essentially leasing an apartment or house from someone, and offering it on Airbnb at a premium.

No, unfortunately a lot of this is just not accurate.From the point of view of a passive investor in the deal: real estate crowdfunding is essentially the same thing as a syndication...except it's usually done over the Internet.

To actually use the funds for a RE purchase you have to go through a company that will essentially swipe your card and wire the funds to you for 2.75%.

I told him to let me think about it and I'd get back with him soon.I just worry that if I ever decide to sell the house that a walk-in tub would negatively affect the re-sell value, especially given that this is essentially a starter type home...My initial reaction is no, but then I think that if they want to make this change and pay for the modification, they have no intention of leaving and I would have a very long term, dependable tenant.Could I stipulate that they can change it out but if they decide to leave they have to swap it out for a one piece shower/tub combo that I originally had?