The Police headquarters building hosts the headquarters of the Tamil Nadu Police. It is located on Kamarajar Salai along the promenade of the Marina Beach. It is spread over an area of . The building is classified as a heritage structure.
The building was built in 1839 originally as a Free Masons lodge, and was taken on lease by the Madras Police in 1865 for a rent of per month. In 1874, the building was bought by the government for and was expanded at a cost of . A new annexure building, consisting of three blocks, spread over a built-up area of , was added in 2012 at a cost of .