Not really...I've had trouble finding it...I am trying to find deals that offer at least 10% cash on cash returns and it's a challenge

They were either too expensive or located in a challenging neighborhood.Then last week I received an email from an investor selling an apartment complex.

I have a hard time believing that any one would waste time over challenging intent over 1% interest.

If parties challenge tax sales, the grantees and opposing parties litigate to determine their respective rights.This is for your state I looked it up. 

I think you are on the right track with Airbnb out there, but management may be a challenge from a distance. 

My advice would be to engage as much as you can here.

Even with that background, it can still be challenging to get good numbers.

it is also difficult to engage in wholesaling with your IRA without providing services to the IRA, which may be why your current custodian is not willing to process such deals.Short term gap funding to an unrelated wholesaler or other such strategies may better fit within an IRA, where everything needs to be very much at arm's length, and where passive income is tax favored (as opposed to trade or business income such as this).

But any broker can engage in commercial or residential transactions.

It really depends on how challenging the project is, distance between heads, and the electrical work needed.How many heads are you looking to get?