So I glazed the house and went to put it in my kiln only to find that it was a bit too big. BUT -- turns out - good news and bad news - that the roof was loose from the bottom and each piece would fit separately. So I fired the roof first. The patch attach joint failed and the supposedly repaired broken piece separated badly. Also, a crack appeared at the bottom of the back left edge - but not along a seam! It was tempting to give up at that point, but I wanted to see what the glazes on the bottom part would look like, so I fired it.
Clearly I have a lot to learn about constructing and firing larger pieces. And I'm thinking maybe stoneware, at the higher temperatures, is more susceptible to these kinds of problems than earthenware, but I don't know.