[1][8] Fragments of prehistoric pottery, roof tiles and remains of walls from antiquity, and a Roman coin from AD 276–283 have been discovered in Kaplja Vas, attesting to early settlement in the area.

Continuity of settlement is indicated by the discovery of early Slavic graves near the parish church and a fragment of a quern.

[9] In the past, Kaplja Vas produced large quantities of wine; the village also had two grain mills and two sawmills.

[1] During the Second World War, the Partisans operated an underground print shop at the Mejač farm in Kaplja Vas from the end of March to mid-May 1944, after which it was relocated to Mlaka.

[5] Kaplja Vas was annexed by the village of Komenda in 1952, ending its existence as an independent settlement.