Best way to structure a deal in Self Directed IRA (Roth)

[Sophia Wang]

Scenario: I own a land parcel in my self directed Roth IRA (let's say valued at $50k), and have a small amount of additional funds ($25k) in the Roth account. We plan to build a home and sell (construction budget $250k, home should sell around $400k). Since the funds in the account is not enough to cover the construction cost, we are looking at best option to structure the deal.

Thought process: If we get a none recourse loan to build the home and sell, this will trigger the UDFI tax. To avoid this, is it still possible to add a partner (none related) to the title that becomes the equity partner to the deal, and would this help in avoiding the UDFI tax? 

Any other suggestions?