The church's oldest parts date from the 13th century, when the site—possibly a pre-Christian ceremonial ground, and perhaps earlier the location of a wooden chapel—was chosen for a stone church. Restoration work in 1929 uncovered the foundations of an original triumphal arch and a straight-ended chancel, confirming this early medieval build. The compact original church admitted only sparse light through small windows, with the altar illuminated through a narrow east window during morning mass.
A major transformation came in 1662, funded by Markus Larsson, then owner of Vallda säteri: the triumphal arch was removed, the side walls extended by around ten metres, larger windows inserted, and the chancel rebuilt with a rounded, brick-built end, contrasting with the thick granite walls of the nave. Larsson and his wife's initials, along with the date, are recorded on the chancel's exterior wall. The stone tower, with its distinctive narrow, obelisk-shaped spire, followed much later, built between 1765 and 1770 after a slow start—reportedly because parishioners were sometimes unwilling to contribute the required labour. It replaced an earlier freestanding bell tower on nearby Klockhögen. Further changes came in 1837 (new altarpiece, pulpit and pews) and in a 1929 restoration that added a sacristy, a new vaulted ceiling and updated interior finishes.
The church's oldest and most striking object is its font, carved from soapstone in the late 13th century by an unknown sculptor associated with the so-called Starkärr school. Four-lobed like a four-leaf clover, it is decorated with arcaded panels and floral ornament that would once have been painted in bright colours—traces of which are still visible. It originally stood at the centre of the church, the first object a visitor would have seen, and its distinctive shape has inspired the pattern of a carpet laid before the altar since the late 1970s.ed here. It is considered one of the finest examples of its type and is unusually well preserved.
The present altarpiece, installed in 1982, is by Joel Mila, a noted church artist in western Sweden, and was his final work; it depicts Christ on the Mount of Transfiguration in a style that deliberately contrasts with the older, still-preserved altarpiece kept behind it. Among the church's older furnishings are a rounded 1837 pulpit on the north side of the nave, a votive ship, and bells with contrasting histories: the great bell is thought to date from the 1500s and bears no inscription, while the smaller bell, cast in Stockholm in 1662, carries decorative figures and an inscribed text. A third bell was added in 1993, giving the tower its current three-bell chime.
Nearby stand a yellow-painted 18th-century timber rectory, the Vallda säteri estate, and Gustavsberg, once home to the 18th-century clergyman, botanist and physician Gustaf Hjortberg, who served the parish for over twenty years.