For example, one of my early buy and hold properties had a ban main sewer line...

First, I'll say that I'm a bleeding heart dog person.Second, why not just ban the boyfriend's dog?

:One of the things I have never understood is why landlords would even consider allowing animals to live in their property.Nearly everyone of our tenants has a dog or cat, and we never have any problems.Our problem tenants in the past had problem pets, and I'm sure there is a correlation.It's simply back to screening.Rabbits are banned though.

A breed ban should be nullified in that case, if in fact they truly are a service dog.

It doesn't specifically state that guests are banned, but by the way that the lease is worded, they are.In theory, my lease covers me and I make sure the tenant knows up front that only the folks on the lease should stay in the home.In practice, I've never had an issue and I honestly don't care about the occasional guests (I do not pay for any utilities on my houses, so there's no bottom line to protect).  

If your girlfriend is a mature and intelligent individual, money and the rules of engagement should not be a banned topic of discussion.Adults talk and discuss money.  

Did the HOA vote to ban STRs and if so where you grandfathered in because you purchased before the rule was put in place?

That said, some homeowners' insurance companies have banned certain breeds, so be aware of your own policy when you rent to people with dogs, and/or make sure your insurance company doesn't practice breed discrimination.  

For now you have two options ban A from having dogs or tell them they must leash their dogs at all times on the property or they will be  banned. 

And if our housing authority discovers you doing that, you get on their banned landlord list.