The church in Siecieborzyce was probably founded in the second half of the 13th century. It was recorded for the first time in historical sources in 1273. In 1508, it was enlarged with a sacristy and tower. Also a flat ceiling above the nave was replaced with brick vaults. Probably at the same time, the majority of window openings were enlarged and the façades were plastered. The church underwent reconstruction also in the Baroque period, as evidenced by the crowning of the southern porch. In 1905, the church was regothisated, during which polychromes were made on the vaults.
The original church was erected as an orientated, aisleless building, on a rectangular plan, with a narrower chancel, straight ended from the east. In the 16th century, a sacristy was added to it from the north and a four-sided tower on the west side, located slightly asymmetrically, with a slight shift to the south. The nave and the lower chancel were covered with separate gable roofs, and the northern outbuilding was covered with an extended roof of the chancel. The original windows of the church were pointed, splayed, two portals with stepped jambs were similarly pointed. The nave was initially covered with a flat, wooden ceiling. In the 16th century it was crowned with a net vault, a stellar vault was built in chancel, and a diamond vault in sacristy.
To this day, the church has retained its early Gothic shape (enlarged by an early modern porch from the south), but many original architectural details have been transformed. The original windows have survived on the north side, you can also see two pointed portals. Today, the interior of the nave is covered with a late-Gothic net vault, a stellar vault is in the chancel, and a diamond vault sacristy.
Pilch J., Kowalski S., Leksykon zabytków Pomorza Zachodniego i ziemi lubuskiej, Warszawa 2012.