A stone church was built in Segerstad parish in the 1100s, one of the smallest on the island. Early depictions show a rectangular nave with a sturdy tower at the east end, possibly raised over an earlier straight-ended chancel. The medieval vaulted ceiling was supported by a single central pillar, an unusual arrangement. The nave was lengthened westward in the mid-1700s, and a sacristy was added north of the chancel in 1764. At that time a freestanding bell tower stood in the churchyard.
By the early 1800s the medieval building was still considered too small. Rather than extending it further, the old church was demolished and a new one built on the same site in a late Classical, Empire style, this time with the tower at the west end. Construction began in 1839 and the church was consecrated in 1843. It is built of limestone, with a rectangular nave, west tower and an extended sacristy behind the straight east wall. An octagonal, copper-clad lantern above the tower roof houses the two bells; the smaller was cast in 1681 by Michel Bader, the larger in 1862 by I. P. Forsberg.
Inside, tall round-arched windows give the hall-church interior a bright, spacious character beneath a wooden barrel-vaulted ceiling. The church originally had a combined altar-and-pulpit arrangement. During renovation works in the mid-20th century the pulpit, built in 1765 by Claes Wahlberg, was moved to the north wall, and a new altarpiece took its place. That painting, completed in 1950 by Einar Forseth, is set within a surround of two grained columns beneath a triangular pediment and a radiant Trinity symbol.
Among the older furnishings is a font of Gotland limestone dated to the 1200s, and a font-altar with a crucifix, built in 1733 by P. Buschberg using columns from an earlier altar arrangement. The largely original box-pew seating retains numbered pew doors, and two ceremonial chairs from 1916 stand in the chancel. A votive ship, a model barque, was given to the church in 1977. The organ, built in 1952 by Olof Hammarberg of Gothenburg, stands behind a 19th-century case retained from an earlier instrument.