The chapel owes its existence to residents of Stenungsön and Stora Askerön, who lived closer to Stenungsund than to the parish church at Norum and raised funds themselves to build it. Ownership remained with the Stenungsunds kapellbyggnadsförening (chapel building association) until 1993, when the building was donated to Norums församling, whose parish it still belongs to today.
Designed by the architect Sven Wedenmark and built in 1924–25, the chapel is a wooden structure clad in white-painted standing panelling, with restrained classicist detailing typical of its period. It has a rectangular nave with buttressing, a smaller, straight-ended chancel, and a slender metal-clad ridge turret carrying a bell above the west front. The main entrance is on the south side, with additional doors leading to the chancel and, on the north side, the sacristy.
Inside, the whitewashed interior rises to a tall, three-part vaulted ceiling, while the chancel—separated from the nave—has its own barrel vault and marbled columns, giving it a distinct character from the plainer body of the church.
Most of the fittings were donated by individual parishioners or the local sewing circle. They include an altarpiece from 1971 by Viking Lanje, a font from 1926 by the sculptor Valfrid Andersson, a longcase clock with an eighteenth-century movement attributed to Joachim Hofvensköld, and a votive ship made by Axel Magnus Berg. The organ, built in 1959 by Grönvalls orgelbyggeri and later rebuilt, has seven stops across two manuals and pedal.
Today the chapel is used mainly in the summer months for services and musical events, continuing its long association with the local community that built it.