I have cash sitting in a tax deferred IRA account.  

I'm aware that I cannot, personally, do any of the work - I'd have to just buy the property in the name of the IRA's LLC, pay someone to do the work, have an agent list it, etc. 

I'm thinking about rolling a 401k into a Roth IRA to invest in multi-family.

Self Directed IRA How did you add value to the deal?

@Kelly LaneWhen an IRA (or other tax-exempt entity) uses leverage like a mortgage, it creates taxable Unrelated Debt-Financed Income (UDFI) which is then paid as UBIT (Unrelated Business Income Tax).The percentage of the income directly attributed to the IRA's down payment is not taxed. 

I don’t have a ton of cash, but I have access to a Roth IRA that I can withdraw money I’ve put in without penalty.

I've used IRA Tax Services for UBIT and 990-T filing.

I put 401SD HEMHOLZ because I didn't realize my self directed IRA had sent me a ein and name to use.

Use your uncle's IRA which is probably starting to lose money now.

Establish a self-directed IRA.