Question about modular buildings

Sup guys, in the Draw Call discussion thread, I was recomended to model my buildings in a modular maner rather than an single object one, so I could reuse the same materals to save draw calls.

But now here comes a question, should the side walls from the building have the same size as the front floor wall, or since I have free UV space by deleting this front part, expand it alongside the UV to save polygons?

The polygon savings in your image are trivial. And depending how it’s actually modeled they might just get triangulated the same amount anyways. The left one in your image makes more sense to me.

Sorry if I wasn’t clear on that example, here is a better one

It’ll still get triangulated and those long faces will get split up in the process anyway so I think Dminiato’s answer still applies.