The building is a good point. I remember when living at a student housing co-op we were planning (or had already signed a contract, I forget) to put solar panels on the roof. A developer wanted to put in a bunch of 25-story buildings in the lot next to us, which would have cast a shadow on our panels. We brought it up when the planning was discussed at the town council. I'm not sure what happened as I moved away shortly after that.