I'm starting a startup: An apartment with a view finder (opens in new tab)

The direction of the view determines when/if light enters the building. North facing views won't put sunbeams on a person's morning coffee (in Europe, Australia etc. are different), that's important to some people, not to others.

To put it another way, once a person cares about the view when picking a location, the person is likely to become picky. I might be fine looking out a cell tower five blocks away, another person isn't. They prefer trees 30m away.

The direction the windows face literally determines what the view is, so yes, it's important. If you have accurate map data then it should be possible to programmatically determine what the view is, whether it's blocked, where the sun comes in the window during the day, etc. That would be fun to code. But it all depends on your map data...