The church was constructed as one of a wave of so-called 'small churches' put up across Sweden in the 1960s, designed to be quickly assembled and, if needed, just as easily taken down again. Locally it has long been known simply as 'Småkyrkan' (the little church). Unusually for the parish, it is the only one of the pastorate's nine churches without an adjoining churchyard.
The building has a timber frame with exterior walls clad in wooden panelling, and a hipped saddle roof covering both the church hall and adjoining parish rooms. The interior is oriented east–west, with the chancel to the east. Rather than serving worship alone, the building was planned from the outset to accommodate parish work, youth activities and a seamen's mission, reflecting Otterbäcken's long-standing identity as a harbour and shipping community.
Outside stands a striking three-sided wooden bell tower shaped like a nautical seamark, a form chosen deliberately to echo the town's maritime heritage: symbolically guiding people towards the church much as a seamark once guided vessels into harbour. A single bell hangs within it.
Inside, the altarpiece was created in 1965 by the artist Harry Svensson. A votive ship, a traditional maritime church offering, was made by the local firm Ambeg of Otterbäcken. In the chancel is a cross of wrought iron and glass by Curt Dejmo of Uddevalla, and the organ was built by Smedmans Orgelbyggeri of Lidköping.
The church was sited on rising ground in the settlement, a little way from the main road, at a time when Otterbäcken's industry and harbour were expected to expand significantly. That anticipated growth did not fully materialise, but the building still reflects the optimism and civic planning of the period.