Tax implications of purchasing in Roth IRA with a co-signer

[Rich C.]

I currently have the funds available for downpayment and rehab costs in my roth IRA for a rental duplex (the rental duplex is bank owned and thus has no tenants). However I cannot qualify for a loan being an entrepreneur paying myself a tiny salary. I am wondering if I can have someone else, such as my parents, cosign the loan...and what the tax implications would be for this scenario. Perhaps I must stipulate my majority ownership through an LLC?