User blog comment:Teams820/Space Planning/@comment-5399625-20121028032003

From memory, I had all my houses upgraded to mansions asap, by maybe level 26-27. I noticed you didn't mention Dino Habitats, which to many (but probably most) players, is the most important thing. Maybe that is why our housing strategies differed so much - if your focus is on dinosaurs you need to upgrade your houses asap.