There is no law, it's just common sense.

Here is one of my posts that will provide answer to the most commonly asked questions.

Outside of real estate, I enjoy spending time with my wife and kids, as well as playing golf, collecting comics and sports cards, and binging the next show on Netflix.I am very excited to meet people with common interests, network, learn, and help where I can.

Common questions I have been asked or had investors ask PMs while touring properties with them:What do you see is the biggest hurdle to your operations today?

@Andrew Jessup It's extremely common for the family trust to initially own the real property and then to transfer ownership into an LLC for additional liability protection, with the LLC owned by the family trust. 

Or was the property purchased as tenants in common between you and the LLC?

This ruling focused specifically on irrevocable grantor trusts commonly referred to as Intentionally Defective Grantor Trusts (IDGT).

One objection that is common now a days is the first mortgage rate being low and the home owner not wanting to lose that low first mortgage rate.The other objection is they want to use the Heloc like a credit card only making a payment on the portion that they use rather than the full amount.

Common fees will include a set-up fee, a leasing fee for each turnover or a lease renewal fee, marking up maintenance, retaining late fees, and more.

However it is not typical or common.