It is extremely important that you understand prohibited transaction rules, if you violate those it will lead to the disqualification of your IRA. 

The IRA's LLC are nice vehicle, but you have to keep an arms length distance to prevent self-dealing or engaging in prohibited transactions.

@Bill Gulleyyou are incorrect, her daughter is prohibited from providing services to Kathryn's 401k plan, regardless if she is getting paid or not (she is clearly being compensated here through her broker).

We explicitly prohibit connected ice makers and garbage disposals, as these two features will cause more problems than all other appliance-related issues put together. 

I think they are prohibited from allowing borrowed money for FHA or VA loans.

You can't finance your own deals through your IRA because it would be considered a "prohibited transaction"a) Form an investor group which lends each other money from their IRAs.

A lot of parks prohibit rentals as well so make sure to check into that with the park... 

California law prohibits discrimination against income source, but I also don't think anyone can force you to learn the ins and outs of a government program if you don't want the extra hassle.

On the other hand, if you are looking to invest in alternative investments then a solo 401k or an IRA LLC may be a good fit.Following are the similarities and differences between the solo 401k and the self-directed IRA.The Self-Directed IRA and Solo 401k Similarities Both 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;Both are prohibited from investing in assets listed under I.R.C. 408(m); andNeither may be invested in your own business.  

Typically a lease will prohibit tenants changing locks and give the owner/agents the right to access the property anytime as long as 24 hour notice is given for any (reasonable) reason.