First off, what is a “pilaster”? A pilaster is a flat rectangular column attached to the face of a building, usually at the corners. These are particularly fetching examples. Note the ionic capitols (see the scrolls at the top of the column) There is also a very inventive detail just above the capitols where the brackets turn into triglyphs complete with guttae.
If you block the pilasters with your fingers you will see that the facade is actually much less attractive. So…yes, pilasters are still a space and cost effective way to enliven a building, something contemporary designers may want to revisit. Capitol Hill, Seattle, WA USA