He took possession of the apartment without the landlord’s permission, yet the Landlord had to evict him just as though he were a normal tenant.If a bum off the street broke into your house and took possession of your home, you would have to evict them just like anyone else.It is very important to remember that a Notice to Quit is exactly that, A NOTICE.

For permission to run credit checks, for instance, with tenants moving from out of state or country, I'd email them basically, "do you agree, or give permission for such and such"  and they'd email back, "yes."  

Did you have permission to paint?

We did M2M agreements only and I allowed them to sublet their units over the summer - what I did was give them written permission to have a long-term guest, and told them I don't care if money changes hands, but the original tenant remains my tenant and is responsible to pay me.  

I think I'd at least write up something that says they have written permission to remove possessions, but not to reside there, just in case.  

I also have a clause that requires them to gain prior permission from us before anyone can stay overnight.  

/Georgia_Landlord_Tenant_Handbook.pdfCan my apartment be shown to prospective tenants during the last month of my occupancy without my permission?

I would even give the new manager permission to tell the tenant that I (the owner) was new and did not know all the norms and ins and outs of being a landlord (and that it is a 100 year old single family not a made to order Ritz Carlton).

Some things are state specific..so you may not be able to use all of them-Payment Methods Accepted-Late Fee Policy-No maintenance performed by tenant without landlord's permission-Procedure for notifying landlord for maintenance (too many say this has been broken for x amount of time so I need it fixed TODAY, but never notify the landlord)-Consequence of moving people in and bypassing your qualification process-Consequence and fine for sneaking a pet in without notifying landlord-Rent pick-up fee--if they refuse to adhere to payment method in lease; rent pick up fee will apply for successful and unsuccessful trys at getting the rent. i.e. you knocked on the door nd no one answered or they ignored you-Tenant damages-Tenant MUST PAY FOR TENANT DAMAGES. 

Which now they have to ask for permission to do.