The present church was built in 1911–1912 to designs by architect Sigfrid Ericson, with Linus Johan Johansson as master builder. It draws on the study of old Swedish churches, adopting a Romanesque form with round arches, a vaulted chancel and a semicircular apse. A sacristy sits against the north side of the nave, and a tower with entrance and porch rises at the west end; electricity was installed in 1921.
The granite structure is notable for its carved detail: patterned ornament surrounds the doorways, echoing old motifs, and the heavy roof is supported on stone corbels carved by stonemasons from the parish, depicting human and animal figures. The church measures 24 metres in length and 14 metres in internal height to the roof ridge, with a pointed tower reaching about 50 metres.
Inside, the granite font was designed in 1912 by the church's architect, with a seven-sided bowl, a profiled shaft and a broad square base. The pulpit was made the same year by Harald Petersson of Gothenburg. The organ, originally built in 1880 by Salomon Molander, was destroyed in the fire that had devastated the earlier church; a replacement was installed in 1912 by Johannes Magnusson and later rebuilt in 1958.
Just south of today's church stands the ruin of Lyse's old church, first recorded in a 1391 bishop's register. Parts of its north wall may survive from the medieval building, and a Romanesque coffin-lid gravestone remaining in the ruin has been attributed to the 12th century. The old church was decorated with paintings by Christian von Schönfeldt in 1702 and rebuilt in 1851, when it was described as one of the brightest and most beautiful churches in Bohuslän; the churchyard was reorganised at the same time and many older graves removed. The building burned down on a Sunday in February 1909 and has stood as a ruin ever since.