[1][2] The area covered by the present Dehiwala-Mount Lavinia Municipal Council was part of the Kingdom of Kotte.

In the early 17th century, the Dutch brought a more organised administrative structure from which a broad based taxation and legal system evolved.

In the 19th century the British replaced this with a provincial administrative (Kachcheri) system, which led to the current form of local government developing.

In 1959 this area was extended and divided into nineteen wards and given municipal status because of its rapid urban growth and for administrative reasons.

In 1967 the municipal area of approximately 2,109 ha (5,210 acres) was apportioned into 29 wards, as it exists today.