Glen Ellyn carries one of the highest concentrations of pre-1940 housing in DuPage County, with roughly 17 percent of the village's homes built before World War II. Craftsman bungalows, Prairie-style two-stories, Colonial Revivals, and Tudor Revivals dominate the blocks around Kenilworth Avenue, Forest Glen, and the Lake Ellyn neighborhood. These homes were built with plaster walls, cast iron steam heat, and narrow service kitchens that were never intended for modern open-plan living. They are architecturally significant and deeply loved, but their function has not kept pace with how families use a home today.
The 1960s and 1970s added a second major cohort, representing nearly 30 percent of the housing stock in subdivisions like Annandale, Arrowhead, Brierhill Estates, and Meadowbrook. These homes present a different set of constraints: closed-off kitchen layouts, undersized bathrooms, and unfinished basements. Bayern Builders has completed projects across both eras in this village, navigating the Village of Glen Ellyn Community Development Department's permit process and the code nuances.