Andrzej Ruszkowski moved his registered office to Złoczew and built his brick manor house there between 1614 and 1616. In 1651, in the center of the market square, he built the town hall with a wooden tower. Not far from Złoczew, in two neighboring villages Szklana Huta and Stara Huta, were built two glassworks, where probably produced window glass and bottle glass, and the surrounding area saw the construction of several mills and windmills. In the 18th century, as a result of large influx of Jewish origin population, the first synagogue was built in Złoczew.