Cool, its important to note that sometimes modular building sets will be built up from a variety of uniquely unwraped pieces(thus a high res source would be a plus). But if you're going over the modular + high res stuff, that is certainly a good start.
im going through the modular building tutorial from 3d motive which doesnt involve any high poly modelling. basically importing textures into max and manipulating planes to create building silhouettes the importing into unreal. i'll be going through the high poly tutorial from 3d motive aswell which looks pretty good.