Ytre Sandsvær is a former municipality in Buskerud county, Norway.
Prior to the merger Ytre Sandsvær had a population of 3,140.
The church was built in Romanesque architecture style and dates from approx.
The church was constructed of natural stone up to 1 meter thick.
Efteløt Church is in the Kongsberg Joint Parish Council of the Diocese of Tunsberg[2][3]