I could do this with a SFR or a multi family unit up to 4 units, and rent out the other 3.It seems very difficult to find a good multi home, as they are all snatched up quickly...So I guess my question is:Are their any legalities associated with this?

A lot of forum members are very knowledgeable in their respective fields related to real estate investing, whether that is real estate sales, wholesaling, flipping, rentals, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.Discounts on some products and services are offered to BP members: https://www.biggerpockets.com/perks/proIf you haven’t been to it already, you might want to check out the BP blog: https://www.biggerpockets.com/renewsblog/The site has quite a few tools that can be helpful for new members.

The legal costs of starting information services aren't trivial, and being an advisor is far thornier, and may even require licensing.As for machine learning, artificial intelligence and APIs, note that they do not fix GIGO (garbage in, garbage out).

The alternative is a nice big rent hike at the limit of legal acceptability, like 10%, and the explicit threat of keeping them coming.

@Dhruv Anand you would need to form your own fund or “sub-syndication”, which does require going through the usual legal process.

If I look to get a loan from private lender how can I screen him to check if he is doing it legally❓And how to secure myself against loosing any upfront fees if this become a scam❓ By putting it on escrow❓Any advise😎✔️❓

. -- Check to make sure this is legal in your area, it was in mine but I have heard it wasn't in some states etc. 

Female A and Female B are legal half-sisters.

What is the worlds advice on moving them over legally?

We were able to improve the zoning which immediately brought a huge value increase, as well as having the legal water rights.