We have very little sex or none (don’t know if good or bad for landlords but there probably isn’t much drama with girlfriends or boyfriends breaking up or hooking up).

You comfortable with having a registered sex offender or felon fixing your tenants sink?

I have actually been looking into some deals down there by UofA and there are so good deals but most of them either have hight crimes rates surrounding them or a large sex offenders population in the downtown area which can deter quality renters and buyers

In my experience, you cannot increase density and you cannot fill vacant spaces that have been vacant for over a year but I do not believe they can stop you from replacing homes.In fact, I think it is against federal law under HUD for them to try to stop you from replacing homes with anything newer than 1976.Cities are predators when it comes to affordable housing, especially mobile home parks.The nuclear option is always telling them that the only other way to increase your return is creating a community for Sex Offenders a much-needed category of housing, and they will start returning your calls.

Similar to sex offender registries, we need child registries that details their bad behavior. 

Imagine having to rent to a sex offender - that is somebody who "paid their debt to society" ...

I wouldn't want to be responsible for housing a known sex offender next door to a family.This may have to be a case by case determination on your part, when examining the results of the criminal check.

Actually there are a few others that fall in there, so you can argue there's more than 7 (veterans, for example), but it basically comes down to : race, color, religion, national origin, sex, age, family status.

I am just speaking out of my own personal experience on this subject, but a few things I have learned when dealing with a STR in a cold environment are:Hot tubs are the difference between staying fully booked and dealing with vacancies, never buy used hot tubs because they're junk, rodents will look for ways to live inside of the components area because it is warm all winter, people will 100% have sex in your hot tub and you have to keep up on cleaning and changing water and chemicals, the mountains tend to knock out power and your hot tub can freeze up and crack the pipes, and if there are neighbors nearby then you need to lock the cover or else they will help themselves to sitting in the hot tub. 

You should also check the sex offender database.