The building was converted into a chapel in 1929 to designs by the architect Ove Leijonhufvud. The initiative came from the then owners of Häringe slott, who wanted a place of worship closer to hand than the parish church in central Västerhaninge.
The converted house retains a domestic scale, with a small porch added on the north-west side. Inside, the chapel is arranged on an east–west axis with the chancel and altar to the east, and a cross surmounts the eastern roof ridge.
On a wooded hillock near the chapel stands a separate wooden bell tower, known as Häringe klocktorn, with a tall, pointed spire topped by a weathervane in the form of a cockerel. The bell carries a dedicatory inscription recording its gift by Aug. Trolle-Löwen and Mia Trolle-Löwen to the chapel on the churchyard hill in 1929, along with lines invoking peace and devotion.
Inside, the semicircular altar rail and the hexagonal pulpit share matching decoration and colouring, giving the small interior a unified, homely character in keeping with its origins as a private house. The organ is a harmonium made by the Skandinaviska Orgelfabriken in Stockholm, and a rococo-style hymn number board dating from the 18th century is among the older furnishings, likely brought in from elsewhere when the chapel was created.