Complex sentence: The house is also included in the NRHP-listed Koester Block Historic District which contains the home of his son, Charles J. D. Koester, hence named the Charles J.D. Koester House, which faces onto Elm Street.
Split into simpler sentences: The house is also included in the NRHP-listed Koester Block Historic District. The district also contains the home of Charles F. Koestler's son, Charles J. D. Koester, which is named the Charles J.D. Koester House, and which faces onto Elm Street.