In the 16th century, Ojrzanów belonged to the Ojrzanowski family, including Jan Ojrzanowski in 1526. Later, the owner was Piotr Goryński. In the second half of the 16th century, the estate belonged to the Miński family, and in the 17th century to the Zarembas. At the beginning of the 19th century, the owners of Ojrzanów were the Strażowie family. From 1834, the estate was managed by the Stadnicki family. In the 20th century, the estate was owned by the Dziewulski family.
The palace located in Ojrzanów was probably built in the late 19th century by Władysław Marconi. It is a classicist, single-storey building with a two-storey central part in both elevations, which is topped with a triangular pediment and preceded from the front by a porch with four thin columns supporting a balcony. The edges of the axis of the front elevation are slightly revitalized and rusticated. The palace is covered with a low hipped roof. The decorative element is the numerous chimneys growing in different parts of the roof.