I am wondering if transferring the cash periodically to a standard brokerage IRA account may be my best option.

NEVER CONVERT CASH in YOUR IRA or 401K into ROTH!!!

As a side note typically I do not use my deferred tax dollars to invest in traditional real estate as the benefits (depreciation etc) are all lost when using a self directed IRA - My guess is build to rent will provide little to no cash flow to build the account - it will all be locked in the property. 

If you had $50K in a Self direct IRA how would you leverage that to yield short and long term dividends? 

It’s a great way to grow faster.HELOC or Equity Tapping: If you have equity in another property, using a HELOC or cash-out refinance could help cover the down payment without affecting your DTI as much.Seller Financing or Creative Deals: Look for sellers willing to finance directly, which bypasses traditional mortgage qualification hurdles.Scaling quickly often involves combining strategies—play around with what works best for your goals.

It’s the same thing except it’s done in the name of the IRA and all the money comes out of the IRA and returns go back into the IRA. 

Many people invest in real estate using an SDIRA or even better a Checkbook IRA.

Has anybody invested in PPR within their Roth IRA? 

A 1031 exchange doesn’t apply, but funding through a self-directed IRA can defer taxes, though profits from debt financing may trigger UBIT.To reduce taxes, consider forming an LLC for better expense deductions, offsetting gains with investment losses, or holding the property for 12+ months to qualify for lower long-term capital gains rates.This post does not create a CPA-Client relationship.

If you’re interested in investing in real estate, you can consider doing so with a Self-Directed IRA to defer taxes on capital gains until you actually withdraw the funds from your IRA.