I recommend talking to a lawyer.We charge them a fine, and then the dog has to be off property.If they don't pay the fine by the next round of evictions we evict them.The tenant knows the rules and is actively trying to violate the rules.If you let this slide, other tenants will start to do the same.

Currently my mac only has 2 gigs of RAM or I'd consider trying to run parallels and having windows 7 run inside for access.

And storm windows just complicate egress.

May well turn out to be set back issues or something that makes these difficult to install, which would account for why this amenity is unusual.A flat cover would avoid sliding the snow off, but would need to be strong enough to hold up some maximum load.  

Roof and windows were all replaced last year, but older brick building built in 1930. 

The garage already had doorway access on two sides and windows on 3 sides.

The egress windows did not meet city code.

The realtor told me one thing people often overlook is getting the windows cleaned well and making sure the place smells clean and fresh.

Break down the back door or through the basement windows?

You just have to determine what you're willing to let slide in order for your investments to be as passive as they possibly can.