Constructed of gray stone in 1822, the church was designed by Abraham Niklas Edelcrantz at the Royal Intendent's Office in Stockholm in 1807.

[1][2] Nummi Church is located in the Diocese of Espoo and is owned by Lohja Parish.

[1][3] The church is shaped like a cross, with a tall bell tower attached to the eastern wall.

Additionally, stained glass windows designed by architect Ilmari Launis were installed in the choir of the church.

[3] In the summer of 2008, lightning struck the bell tower of Nummi Church, igniting several fires there.

[4] As a result of the fire, the outer shell of the wooden hat of the tower had to be replaced.