They have very high incomes, long length of employment at current employer and no pets.  

Specializing in rural college student rentals with horses/pets.

That was one of our first rentals and a mistake we never made again.At minimum, you'll need:Rental application (BP has some samples)LeaseLease addenda (drug use, specific cleaning stuff, flammables in detail, pet stuff--whatever)Walk-through forms that have room to write down any issues and initial it (btw--we take pictures and put the pictures and a scanned copy of the walkthrough in Dropbox and e-mail the tenants a link).  

We established a NO pet policy many years ago and recently a tenant secured a Service dog because of a trauma she suffered.

Think of all the things that could go wrong and see if the lease addresses them: unauthorized pets or tenants, early termination, security deposit, lease violations, late rent, eviction, lawn maintenance, parking, etc.5.

@Sam Leon I've created addendums to my leases many times for different reasons, like changing the mailing address for rent due or the addition of a pet.

I know my kids and my pets...

So we have a clear pet policy that states a 30lb restriction.

I have a unit for rent and I have a no pet policy.One applicant called and said she has one of those really small dogs - you know, those they put in purses that looks more like a skinny rat?

What are some common fees for pets in a rental home?