normal map and spec won't save this, the diffuse will imo. there is nothing too complicated that isn't getting justice. i mean you could drop the polycount, you could drop it even more and maybe take advantage of a normal map. regardless, fixing diffuse is what is going to make or break this. if you're going to do a normal…
as mentioned several times just throwing a normal on somehting will not make it good, houses like this are made of metal and are smooth, why would you have a bumpy concrete like normal on it? i vote you spend more time on just the diffues before you wory about normals at all. and despite what some kids thing, art does not…