Airbnb let's you as the primary host restrict what permissions the co-host has.

They installed an alarm system without asking permission or even notifying me.

The home would need to be rehabbed, so my questions are:Do I need permission from the land owner to rehab the house that is on the property?

I've heard of some people asking for permission and being successful and some just doing it without asking. 

Not just something that he wanted my permission to do himself.2- He was patient with the time it took me to learn about investing and shed some of my fear about it.

I've had a few tenants try to bring in companion animals and I tell them according to the laws they still need my permission and we will have to get the paperwork processed through my attorney who represents us for companion animals.

Stressed out.Per this resource I found...https://www.rentprep.com/legal/hold-over-tenant-what-if-renter-doesnt-leave/"Evicting a hold over tenant may be slightly different in your state than evicting a tenant under a provision in a lease.To evict a hold over tenant, the landlord must treat the tenant as a trespasser who does not have permission to be on the property and who is acting wrongfully by staying on the property from the moment the lease ends.The best way to deal with a trespasser will depend on the laws of your state and locality."

You can also often get permission to sell a property under a blanket loan by paying off a  percent of the balance set by the bank depending on what percent that property is of the total. 

Normally if the lease ended Oct 31 (for example) and they were moving out before Sept 30, but willing to pay rent until Oct 31; I'd get their permission to show the house (with 24 hours' notice) in Sept. 

The notary that recorded my signature on the deed of trust with right to sell (giving them permission to sell my property for me), missed something, I already had bad sellers remorse and backed out.