I agree with Cyndi Bell, ask questions directly to the builder and let them know about your concerns as well as knocking on some homeowner doors and asking about what they have expereince with this builder. This is a great way to learn about any neighborhood your looking at.
Folsom is a great active community. The Hideaway @ Treehouse is conviently located near Folsom High School, Gallardo Elementary School, Kaiser, Intel, Running Trails, Soccer Fields and Restaurants.
Have a great day,