=========If they are seeing these guys (pic below), they are not rats, they are possums.They sleep in the trees and will go under houses to eat their favorite food--cockroaches (or cat food if they can find it).They roll up in a ball and play dead sometimes...but have sharp teeth, and are not a pet--just a part of San Antonio wildlife like a squirrel or the birds.The cats leave them alone and will share food with them.I've not known of any who burrowed into a house like a rat to get food--they eat bugs..Good Luck!

As long as you dont try to rent it out, run a business out of it, or disturb the neighbors with it you will probably never have any issues.

It's not perfect, but it helps to mitigate the risk and allow me to sleep at night. 

No good answer but ideally you can sleep at least two per bedroom, and maybe 1-2 in a flex space. 

Explain the situation, offer to cut the grass and make dinner once a week in return for sleeping on the couch and sharing utilities. 

Grounds for good cause may sound obvious, but they include the following reasons:Failing to pay rent when due or owed.Disorderly conduct that disturbs the peace and quiet of neighbors.Tenant’s gross negligence which has caused damage or destruction to the premises.Continued violation or breach of landlord’s reasonable rules.Failure to pay rent after a valid notice to quit and a reasonable rent increase.Premises will be demolished due to housing violations affecting health and safety.Owner’s desire to permanently retire the premises from residential use.Tenant’s refusal to accept proposed new terms of lease that are reasonable at termination of the lease and lease renewal.The building where the premises is located is being converted to a condo or coop structure.The tenancy was conditioned on the tenant being employed as a superintendent, janitor, or in some other capacity and the employment is being terminated.

The few that have mortgages initially purchased as owner occupants.If you're going to look at 2 beds I would try to find one that can be flexed to create a 3rd bed or create a sleep alcove/den so you can get higher rent. 

He's got a cleaning lady that does it for free, and he gets to sleep with her!

I know i have got a bit lucky but i also eat, sleep, live real estate ..

Now wether you actually sleep their and not up north well, that is a logistical matter not a residential one.