Between 1889 and 1891, a road was built connecting Ilsfeld to the administrative center of Besigheim, and in November 1899 a segment of the Bottwar Valley Railway was inaugurated; the following year, this was extended from Ilsfeld to Heilbronn South. The Royal Württemberg State Railways built the station at Ilsfeld as a unified station of Type IIIa.Rainer Stein, "Der württembergische Einheitsbahnhof auf Nebenbahnen", Eisenbahn-Journal Württemberg-Report 1.V/96, Fürstenfeldbruck: Merker, 1996, , pp. 80–83 The railroad caused Ilsfeld to develop in the early 20th century from a purely rural settlement to a bedroom community for Heilbronn, where more than 200 residents were soon working, mostly in factories such as the Ackermann plying mill, the Knorr soup factory, the Bruckmann silverware factory and the Flammer soap factory. After an electricity generating plant was built in Pleidelsheim around 1907, Ilsfeld was electrified by 1914.
