I want to give them some time to find other living arrangements or even perhaps considering renting to them.  

It's hard to say Russell, because we don't have an arms-length arrangement when the buyer is representing himself/herself as agent. 

Each LLC can have a separate agreement, but the IRS will scrutinize this, so keep everything above board to avoid issues.Tax Implications: This arrangement could allow you to shift income and claim home office deductions, but it needs to be done carefully to avoid triggering any red flags with the IRS.Renting a Car to Your LLCs:Renting your car to your LLCs can also offer some tax benefits, such as shifting income and potentially deducting expenses like mileage and depreciation.

However, few realize that the high cost of housing and related expenses may bring them back to shared living arrangements in the future.Is this a good thing for individuals and society?

I would also make sure that he doesn't sell his part for at least 3 years.What do you guys think of this arrangement?

In my past professional life I worked as an attorney for a hotel development company that owned over 1B in assets yet as a company we  did not feel the need to utilize entity structures nearly as complexed or  convoluted as what you arranged. 

Additionally, consider how this arrangement may impact your insurance and liability.

I know that a "subject-to" (sub-to) arrangement might work, but is there a way to release the other spouse from liability when using sub-to, or is refinancing necessary?

I did NOT take “floor time” and I arranged to forward any buyers, sellers, tenant or landlord leads I received that were not related to automotive properties to other brokers in exchange for them forwarding their automotive property leads to me.

We allow the seller to leave anything behind they don’t want to deal with, and we minimize disruptions by arranging only one showing.