Bulid Check

Is it possible to check if its possible to bulid a building in a place on the map?

I cound create a dummy unit that creates a dummy building that I remove afterwars, but I hope this isn't the best way of doing it.

The IsTerrainPathable I think, but it think that for buildings a dumym would be a good fast solution, since buildings' collision is quite big, and IsTerrainPathable only works on point