Maybe tell them if its causing them issue you give them permission to professionally take the tree out and stump grind it down. 

A smaller condo, closer to Downtown with permissive HOA would be the BEST but that's almost impossible right now)  - Seattle, WA (Smaller condo close to Downtown with permissive HOA) - Broward County FL (Palm Beach Gardens, Ft Lauderdale, West Palm Beach, Hollywood, Deerfield - at least 3/2 + a pool) Again - thank you Bigger Pockets friends + mentors! 

They need permission from the landlord to get their business license. 

It does not require permission.

A quick pre arranged ( dont just go enter the property without permission) inspections, or even just a QAndA with the renters may akert you to potential problems early when they are cheaper to fix or stop.

Any changes you would need to make to the lease terms are permissible 30 days before the next 30 day term.

Charge whatever late fees are permissible, give them a notice to start the eviction process as soon as they default on the rent, and get them out.

If you have the owner's permission then your fine, but if not you're marketing a property for sale that you do not own.

It almost sounded like roommate #2 was asking us permission to leave so roommate #1 and unauthorized guest can be left on the hook for the whole rent with 6 days notice and the answer to that is a big no.

Basically all you are doing is notifying the tenant of the increase not asking his permission.