I would NOT remove the storm  door permanently, as during the next storm, water may seep in under the door, and who wants water damage.  

The larger multi family was great because the construction loan rolls into permanent  financing once we get our occupancy.

Unless you have a permanent housing structure you cant have RV parking or tiny home parking on your land, or even a shed. 

People seem to view them as such a permanent tax solution.

I think airbnb is trying to be too smart with their AI, they are trying and testing out things permanently and there are some unexpected results.

Look into Nelson Nash regarding creating your own Family bank using permanent life insurance to fund your real estate deals without any credit check.

@Lydia T.A guest is someone that is staying in your place for a short period of time less than a month or 7 days in some states, if she has access to mail, doesn't have another permanent house or any other thing that indicates she lives there, it makes her a tenant and automatically gets all tenant protection laws, she can refuse to leave and then he will need to evict her like any other tenant, she can refuse access to the unit legally unless she signed a lease indicating that the owner or someone he sent can get access to the unit in a 24 hour notice.

Also consider that on 2-4 unit buildings that are non-owner occupant loans, your permanent finance max loan to value (LTV) will be 75% of appraised value.

Now an irrevocable trust can keep assets away from creditors but you must turn over control permanently to someone else. 

He has a close relative who is moving permanently to Cleveland and will actually be living and co-ordinating from not too far from the new purchase.