By World War I, brownstone went out of style: the light color of limestone became de rigueur, and weather damage to brownstone caused by poor extraction methods and shoddy construction gave it a bad reputation that proponents say it doesn't deserve. “With our knowledge of brownstone today and how to cut and handle it properly," that historian said, "we could probably build a better brownstone today that we could in the 19th-century." We'll see about that, won't we!
In the meantime, not all Heights residents are won over by the historicity. "Unfortunately this part of the neighborhood is not dominated by brownstone buildings," a commenter writes at Brooklyn Heights Blog. "There’s not a single brownstone on the block. It’s all brick and frame houses. This building is already going to stick out (literally) because it’s over-sized for the block, and the choice of materials will make it look out of place even more."