The one tenant / one check rule keeps it clean on your end.

With HELOCs, each bank can (and do) make their own rules. 

This would violate the following prohibited transaction specifically:“Sale, exchange, or leasing of property between a plan and a disqualified person.”https://www.irs.gov/retirement-plans/plan-particip...What is more, this same rule applies to round-about/straw-man transactions.

A lot of states require the 2 year rule, although I would check in the PM part of it, some(although very few) don’t require a real estate license to do PM

They exist to enforce rules to protect property values, ensure a clean, safe, functional neighborhood, etc.

Investing in multi family (4+ units for example) has very different rules than investing in single family homes.

Don't forget the utilize the 70% percent rule and to subtract your rehab costs to determine your purchase price.Using independent wholesalers may give you the opportunity to find better priced deals, but you'll have to do much more leg work to qualify the leads as these groups will not hold your hand as much as the aforementioned. 

@Steve RyanIRS rules prohibit you from pledging your retirement plan as collateral for a personal loan.

Each Level is assigned a role within the system, which is how/why they feed into the next Level.4 - An understanding that a Perfect System is both Self-sustaining, and repeatable.5 - Understanding the difference between, "cost and expense".6 - Understanding the only important rule of Poker, and how it applies to REI.7 - Understanding the enormous importance of this number sequence. 

Then you can combine all of those accounts into single self-directed Roth IRA and utilize those funds for alternative investments.More on the Roth conversion rules you can learn on the IRS website:https://www.irs.gov/retirement-plans/retirement-pl...