The present red-brick church, built in a Neo-Romanesque style with buttresses, was designed by architect Albert Törnqvist and constructed by master builders Gustaf Andersson and Johan Larsson of Varola. Its north-south alignment, unusual for a church, is said to have been dictated by poor ground conditions at the site. A slate roof was added in 1893.
The church stands on the site of an earlier building, and before that a medieval church associated with Björkäng once stood elsewhere. That timber predecessor, later replaced by a small 17th-century wooden chapel, is recalled today through several surviving furnishings: a medieval font, the largest of the church bells, and a carved and painted altarpiece dated 1738 (repainted 1766) that incorporates fifteenth-century sculpture, now mounted on the east wall of the nave. Sources differ slightly on the object's precise dating and attribution, but agree on its medieval core.
Among the most striking survivals is a small medieval seated Madonna figure carved in oak, now kept beneath the gallery, and an early medieval crucifix stored in the roof space. An eighteenth-century painting of the Last Supper hangs along the south wall. Other older items — including a weathervane dated 1770, numeral boards, and metal chandeliers — were moved to the attic when the interior furnishings were partly replaced during the 1950s restoration, which also introduced the present sacristy and chancel wall paintings.
The pulpit, organ case and gallery all date from the time of the church's construction and are also attributed to Törnqvist. A minor fire in 1911 was extinguished before it could cause serious damage.
The church's bells have their own layered history. The largest bell dates from 1923, a middle bell from 1870 marks the completion of the present building, and the smallest, dated 1686, survives from the earlier church. A further bell, recast in 1833, hangs in the loft above the porch.
The organ has a complicated history reflecting the technical difficulties of its era. An 1895 organ case by Molander of Gothenburg originally housed a mechanical instrument; it was substantially rebuilt in 1937 and again in 1944, when new pneumatic technology imported from Germany during the war proved unreliable in the long term. A planned replacement in the 1990s was abandoned amid financial constraints, and it was not until 2018–2023 that organ builder Karl Nelson reconstructed the instrument, reusing the nineteenth-century pipework within the historic case alongside new additions. A separate chancel organ was built in 1981 by Smedmans Orgelbyggeri.