As far as the practicality, you want to look for homes with somewhat separate spaces, and theres an app now called padsplit that I've not used but have heard good things about to help with the management nuance of it.  

An IRA is a separate legal entity, different from you. 

The furniture in the unit is ours, so we are responsible for that.We do get a separate lessee insurance policy on the furniture and such that we've placed in the condo, and we require our sub-lessees to get a policy as well.

Standard term lease for minimum required by HOA (usually 6 or 12 months) with a separate agreement that lease can be determined by tenant after certain amount of time. 

If we want to get technical, there is no such thing as an "Architect" separate from a "Licensed Architect".

@Srinath GopinathanSo a LLc must be completely separate from you for asset protection so once you were going to deed it to an LLc for free here is what you doYou deed the property to me for free and keep your name on the mortgage.

This would be in a separate agreement from the lease.

As a general rule, each entity that files a separate tax return (partnership, s-corp, c-corp, etc) will need its own QBO subscription.

The way the SEPP works is that you take the current account value and set a schedule of withdrawals to drain the account over a set period of time.If you find a way to make the numbers work, you might want to setup a specific and separate IRA for that purpose.  

I did think about HELOC option for downpayment but If I do a separate purchase, that's another mortgage.