The manor house was built in 1880 by the German Winckler family from Berlin, who eighteen years earlier had bought the village from the Polish Chotomski family. In 1884, Antoni Błociszewski became the owner of the estate, but in 1886, as the inscription in the gable of the manor informs, the Moritz family became the owners of Grotków. At the end of the 19th century, the last owners of the village, manor house, farm complex and park were the aforementioned Grudzielski family.
The manor house in Grotków, built of unplastered brick (with rectangular and segmental arched window openings with a regular, axial layout) was topped with a high, gable roof covered with tiles, with two triangular neo-Gothic extensions on both elevations. It is a ground-floor building with high-rise basements. In later years, the manor house was rebuilt. The southern part of the manor house is much wider than the northern one, single-storey with an attic, five-axis with a centrally placed small projection topped with a decorative gable. It is separated from the northern part by projections with the aforementioned inserts. The northern part of the two-storey building – its sides – are adjoined by lower annexes and a semicircular alcove.
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