UNTIL the latter half of the eighteenth century, nobody had ever heard of Chhachrauli, a small principality founded by Sardar Goorbaksh Singh of Karora-Singhia confederacy. Maharaja Ranjit Singh had granted the estate of Chhachrauli to Goorbaksh Singh,a commander of his troops and a resident of Kalsia village. Goorbaksh Singh thus set up an independent fiefdom called Kalsia, under Maharaja Ranjit Singh. Chhachrauli became its capital.

Goorbaksh Singh did not earn a great name in his life time. However, his successor and son Jodh Singh was of great ability. At that time the area of Kalsia state comprised the territory between the Yamuna and the Markanda stream.

In Jodh Singh's time, Chhachrauli was still a large village and no buildings of importance were in existence. In the ensuing times, Jodh Singh became so powerful that he even captured Dehra Bassi from Sardar Khajan Singh and also acquired territories of Lohal and Achrak. When Maharaja Ranjit Singh attacked and occupied Naraingarh in the Shivaliks in 1807, Jodh Singh was with him. In recognition of his services, Ranjit Singh presented him territories of Badala, Kameri and Chhabbal.

Jodh Singh died in Multan in 1818. After his death, his son Sobha Singh assumed charge of Kalsia state and held it till his death in 1858. Lahna Singh, son of Sobha Singh, had extended full support to the British in Delhi in crushing the revolt of 1857.

In 1858, when Lahna Singh assumed power, the Kalsia territory was intact as a British protectorate. The state's annual income was nearly Rs 3 lakh per annum and the population was around 62,000. Its capital Chhachrauli could now also think of expansion and prosperity. The disturbances, which had been so frequent, in the preceding century, ceased to give further trouble to the Kalsia rajas.

After Lahna Singh came Ranjit Singh Kalsia, then his son Ravi Sher Singh and finally Ravi Karan Singh.
The Kalsia rajas held their estate till 1947 when it was merged with the Indian Union.
Both Raja Ranjit Singh Kalsia and Raja Ravi Sher Singh built several public utility buildings, including a charity hospital and schools.

Raja Ravi Sher Kalsia Hospital was inaugurated in 1910 by Lt Governor of the Panjab Sir Luis William Daney. The old court building still exists at Chhachrauli.

The dewan of the state used to live in an impressive building known as 'Janak Niwas'.
The Kalsias were undoubtedly staunch Nanakpanthis. In volume XIX (Part-1) of the Census of India 1891, E.D. Maclagan, the Provincial Superintendent of Census Operation, records: "Some eighty years ago (i.e., in 1811 AD) the grandfather of the present Lambardar of Jainpur village was carried off by the Sikh Chief of Kalsia, and had all his fingers burnt off, because he refused to acknowledge that Nanak was the true Guru."