If you are not self-employed then an IRA can also be opened.Following are the similarities and differences between the solo 401k and the self-directed IRA.The Self-Directed IRA and Solo 401k SimilaritiesBoth were created by congress for individuals to save for retirement;Both may be invested in alternative investments such as real estate, precious metals tax liens, promissory notes, private company shares, and stocks and mutual funds, to name a few;Both allow for Roth contributions;Both are subject to prohibited transaction rules;Both are subject to federal taxes at time of distribution;Both allow for checkbook control for placing alternative investments;Both may be invested in annuities;Both are protected from creditors;Both allow for nondeductible contributions; andBoth are prohibited from investing in assets listed under I.R.C. 408(m)The Self-Directed IRA and Solo 401k DifferencesIn order to open a solo 401k, self-employment, whether on a part-time or full-time basis, is required;To open a self-directed IRA, self-employment income is not required;In order to gain IRA checkbook control over the self-directed IRA funds, a limited liability company (IRA LLC) must be utilized;The solo 401k allows for checkbook control from the onset;The solo 401k allows for personal loan known as a solo 401k loan;It is prohibited to borrow from your IRA;The Solo 401k may be invested in life insurance;The self-directed IRA may not be invested in life insurance;The solo 401k allow for high contribution amounts (for 2017, the solo 401k contribution limit is $54,000, whereas the self-directed IRA contribution limit is $5,500);The solo 401k business owner can serve as trustee of the solo 401k;The self-directed IRA participant/owner may not serve as trustee or custodian of her IRA; instead, a trust company or bank institution is required;When distributions commence from the solo 401k a mandatory 20% of federal taxes must be withheld from each distribution and submitted electronically to the IRS by the 15th of the month following the date of each distribution;Rollovers and/or transfers from IRAs or qualified plans (e.g., former employer 401k) to a solo 401k are not reported on Form 5498, but rather on Form 5500-EZ, but only if the air market value of the solo 401k exceeds $250K as of the end of the plan year (generally 12/31);When funds are rolled over or transferred from an IRA or 401k to a self-directed IRA, the amount deposited into the self-directed IRA is reported on Form 5498 by the receiving self-directed IRA custodian by May of the year following the rollover/transfer.Rollovers (provided the 60 day rollover window is satisfied) from an IRA to a Solo 401k or self-directed IRA are reported on lines 15a and 15b of Form 1040;Pre-tax IRA contributions on reported on line 32 of Form 1040;Pre-tax solo 401k contributions are reported on line 28 of Form 1040;Roth solo 401k funds are subject to RMDs;A Roth 401k may be transferred to a Roth IRA (Note that from a planning perspective, it may be advantageous to transfer Roth Solo 401k funds to a Roth IRA before turning age 70 ½ in order to escape the Roth RMD requirement applicable to Roth 401k contributions including Roth Solo 401k contributions and earnings.)

"The Stop Predatory Investing Act would prohibit an investor who acquires 50 or more single-family rental homes from deducting interest or depreciation on those properties.

However, the homeowner also has the right of redemption, which allows them to get the home back under certain circumstances: three months after the foreclosure sale if the sale proceeds were sufficient to cover the total debt that the homeowners owed, orone year after the foreclosure sale, if there was a deficiency [A “deficiency” occurs when the foreclosure sale price is less than the total debt that the homeowners owed.]However, if there is a deficiency and the lender waives the right to get a deficiency judgment (a personal judgment against the homeowners for the amount of the deficiency) or California law prohibits a deficiency judgment under the circumstances, the former homeowners don’t get any redemption period.

@Mark S.For those of us that own multiple turn-key rentals in several states, it can become cost-prohibitive to set up a separate LLC for each and every property.  

I know I can't just turn it off in my state, but quick check of Florida says this:83.67 Prohibited practices.—(1) A landlord of any dwelling unit governed by this part shall not cause, directly or indirectly, the termination or interruption of any utility service furnished the tenant, including, but not limited to, water, heat, light, electricity, gas, elevator, garbage collection, or refrigeration, whether or not the utility service is under the control of, or payment is made by, the landlord.It also says tenant can sue for 3 months' rent and attorney fees, or something similar.  

There are serious generational gaps with strategy, motivation, intention, technology, and wealth that prohibit constructive interaction much more than gender. 

@Pam Porter I'm not clear on what you are specifically asking and am prohibited from responding in any kind of meaningful way. 

Sounds like all STR options are out since this is prohibited and your HOA is watching you closely.Roommates may be a good option given the short payback.

However, ultimately you will be responsible if you commit prohibited transaction in your IRA. 

You must know what prohibited transactions are and how to avoid them.