Hi Rivera89,
Unless you will model the whole building to US LOD400, which is quiet extreme I don't think that you have to consider modelling every independent block.
But what you can do is to give it the thickness of an equivalent CMU with a specific line type on on of the wall sides to accommodate those triangular faces, and a texture that have this particular effect on rendering.
A good friend of mine have once told me that I´m so brute that I´m capable of creating a GDL script capable of creating GDLs.