I've invested with some of the crowdfunding sites through my IRA.  

My financial friend has a Roth IRA that will give me $20,000 for 10% of the Cashflow and Equity when it is sold at a future date. ( the terms of the option are case by case ) This benefits to the IRA holder are a good return without the liability and taxation of owning the rental property along with a good ROI.

Do you have a 401(k) and/or IRA?

Should be much greater ROI if you financed the entire Reno with Private $.2) Since a flip and since you and your partner both have day jobs, did you consider using IRA or other retirement funds to avoid heavy short term Capital Gains tax?  

Owning real estate inside any type of IRA is profitable for the Solo IRA custodial holders.

We get along great and after reading about self directed IRAs I was thinking we could access his retirement funds in order to invest in a property together. 

I am aware of the potential to roll assets in to a self directed IRA, however that option doesn't appeal to me since I wouldn't be able to use the rent income until 59.5 (my goal is to resign from my current job and would like the income to replace my salary).

I inherited her IRA (traditional) with a balance of around $130,000. 

@Nathan G.If you have qualified funds (IRA, etc) , you have the funds!

I currently have a Checkbook IRA that I invest in Mortgages.Since I started the process I have had some issues with the company that set up the IRA.