You can take participant loans from the 401k, you don't need the additional expense and administration of an LLC to have checkbook control, and there is a built in-Roth component if you'd like to make tax-free investments.

Thank you for pointing out the cultural component as well!

Did every major component and appliance get replaced during the latest renovation? 

It does require self-employment activity, but has a lot of advantages: Compared to an IRA, Solo 401k contributions limits are roughly ten times higher.There is no custodial requirement for the 401k.You don't need the additional expense and administration of an LLC to have checkbook control.There is a built in-Roth component whereas IRAs are either traditional or Roth, not both.A spouse can also participate in the same Solo 401k plan.The Solo 401k has additional tax benefits over an IRA when investing into real estate using leverage.The penalties for prohibited transactions are less severe, though it's best not to utilize this benefit :)

There have been cryptocurrency transactions recorded via blockchain, first one done in Vermont a few months ago, but there are so many components in a flip that using a cryptocurrency is not commonplace or practical just yet.

Also they won't do anything with a residential component unless it is incidental to the operation of the business, like an apartment for an on-site manager for a hotel.

The problem is that I haven't spoken directly to lender yet, so a lot of this was cloudy, but I think the question that is missing from my scenario was the down-payment component. 

50k or thereabouts 50K Repair escrow Yes, if rehab is included we can hold back for that A mandatory component of the loan (unless you want to borrow 70% minus repairs).

It's hard to tell without knowing the exact breakdown of what value you are assigning to each component of these parks. 

They've decided against taking on that risk and instead are passing that on to you, their client.As landlording is a business, many of us choose not to add an additional risk component by prohibiting breeds of dogs the insurance data shows as a risk.