Dan, you're comparing apples and oranges. On one hand, you have a house, which is known to be built by a builder. On the other hand, you have the universe, which is of mysterious origins, and there's nothing about its composition which necessarily implies a builder, sentient or otherwise.
Note that "come into existence" and "be made" are not the same idea.
Note that "come into existence" and "be made" are not the same idea.