I'm looking to use it as an investment, not a primary residence.

Was the home in a build to rent community, meaning it was all investor owned houses?

People are going to expect a return in thier investment.

The house has appraised for $335k, my hard money note is for $242k, and I'm looking at only about $15k out once closing costs, taxes, and insurance are accounted for.

I'm in a unique situation in that my uncle has "given" me his old house after he relocated to be closer to his siblings.  

Many people choose NOT to have this, because the administrator will then vet every investment you make to ensure you do not invalidate your IRA.Invalidating your IRA means that you've done a prohibited transaction and the entire account is then deemed as distributed to you.If you don't want checkbook control, then I recommend a plan administrator such as Equity Trust - www.trustetc.comIf you are sure that you're aware of all the rules around prohibited transactions and disqualified people (who you can and can't do business with), then a plan administrator like Sense Financial would be a good place to start talking.  

Hello @Tove Fox,You are not investing in a state, you will invest in an individual city.

Not worth it on a 100k house, probably worth it on a 300k+ house in the long run. 

I've used the search feature on this forum but didn't have much luck.Are there any US investors, hard money lenders, or groups that invest in flips outside of the United States, specifically in Europe (Netherlands, Spain, etc.)?

For real estate investors and developers exploring Carlsbad, SB-423 offers a streamlined pathway for multi-unit housing projects.