It depends on several things. Some agencies insist on having property releases before they accept the image some don't. It also depends on whether you sell as RF or licensed.
Also, if the buildings are not prime subjects in the image, then usually you get away from needing a release but if, say, you feature an iconic building as the prime subject and the image is used in an advertisement, you may end up in trouble if sold without release. That has been my guidance when selling stock.