Build a house or get one off the gallery?

I wish I could build, but to learn I would have to take time away from playing the game. So I really appreciate the gallery. I do wish there were not so many duplicate items though. I usually type in the name of the lot I'm replacing which often brings up homes in a similar style to the surrounding neighborhood. I also look under the most popular heading since, for some reason, I am more likely to find homes that don't use every pack in existence. I am still far from completing the collection.