The building began life as an older prayer house, a modest timber structure typical of the region's rural communities, before being renovated in 1970. Its construction is simple and unpretentious: a log timber frame, exterior walls clad in white-painted wooden panelling, and a saddle roof covered in sheet metal. Inside, the space is divided into levels, giving the small building an unusual internal arrangement compared with a typical single-hall parish church.
The most notable furnishing is the altarpiece, painted in 1912 by Charles Belander. Beyond this, little else is recorded about the church's fittings or history, reflecting its status as a modest local chapel rather than a grand parish church.
Visitors interested in the vernacular wooden church architecture of northern Sweden may find Myckelgensjö Lillkyrka a quiet, unassuming example of how small rural congregations adapted older buildings to continued use through the twentieth century.