Ulaskova Chapel is a one-story pine cross-beam building with a squarefloor plan and a gable roof. The outer measurements are 466 x 372 cm, and the building has one interior room. The exterior of the building has changed significantly: it used to have an entrance room and the walls were not covered by boards. The building has a doorway measuring 84 x 155 cm, with a single-sided leaf made from boards fixed on the crosspiece by forged hinges. The dooropens outward. The building has one wooden-framed window with five panes, measuring 45 x 65 cm and painted yellowish-white. The opening for the window is outlined by profiled boards from the inside.