So in case you're doing business in Canada, you should find a Canadian securities attorney and follow guidelines of Canadian Securities Administration (CSA).Good luck!

From the FHAA Federal Housing Authority:[Landlords are required to accept ESA requests] unless doing so would impose an undue financial and administrative burden or would fundamentally alter the nature of the housing provider's services.

So, starting with LLC and testing your performance would be good before electing S-corp because S-corp comes with little administrative tasks such as payroll and its own tax returns. 

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.

@Jack Moreno Hi Jack, I created a series LLC after I had a handful of properties, which was a bit of an administrative headache.

That you could then contact the executor or administrator of the estate and gauge interest in selling the property before they list with a real estate agent? 

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 :)

This is a conversion of a sfr to a triplex and includes design, construction administration, city L&I permits and zoning, and much more.Any other architects want to chime in?

Since there is no will do you know if the administrator has already been appointed @Huy Truong?

To pay a fee is not illegal, consider it administrative/consulting.