Conveniently located in O‘Fallon, Missouri and voted as one of the RelocateAmerica’s “Top 100 Places to Live in 2010”, Preston Woods Heritage features Centex’s brand new Heritage collection of homes.. This line-up of single family homes offers unique floor plans designed around you. Our research has shown that St. Charles County new home shoppers are looking for more usable spaces in their homes. That’s why the Heritage collection at Preston Woods offers the functional spaces and features you’ve been looking for including mud rooms, butler’s pantries, flex storage spaces and more.