As an agent, you need your broker's permission for certain things, but as long as they make money and it's ethical, you shouldn't have a problem.

You rent to tenants--they have the right to possession.You may have a tenancy at sufference...the tenant is staying without your permission (owner suffers)So--all tenancies are a form of ownership.

Is this a tenant at sufferance (the tenant had a lease or official permission to occupy the property at one time)?

you require permission from the current owner to start the process the city has a form, and even then they recommend the current owner does the rezoning. 

How do I get permission from the applicants to run those checks?

There's certainly no shortage of travellers to attract.CONSThere are so many cheap hostels and cheap hotels here the government recently stopped giving planning permission to hotels until further notice.

As far as the unit with only one exit if there is a hallway running next to it any place you can cut another exit even if it both exits out the same stairwell. again do not involve your local town for this either they will see it and not have issue with it but if you ask for permission you're in for a world of hurt.

So a landlord can enter the residence without permission with a legal notice.

The guy they hired to lease it in Huntsville put in a predatory tenant who paid 1 month rent (first month) while living there, brought in 3 rowdy dogs without permission and the house looked like a bomb hit it when they left.I'm going with Rocket City PM and crossing my fingers.

I personally live my life by the famous quote "its easier to ask for forgiveness than permission" so outside of the laws look at an areas economy, sports venues, college towns, etc.