Garage - fix or tear down?

[Tim Youse]

Got a possible rental nearby for a great price. Took a drive by the back though and noticed a crumbling garage. At first glance I thought it would have to come down and turned into a parking pad, but after a second look it looks like it might just need the corner brick replaced - along with the roof and door of course.

Never had to deal with something like this, so those that have - what would you consider doing? This is a row house and the neighboring adjacent garage seems to be intact.

(sorry for the dirty windows on my car - it rained the night before!)