[1] The oldest part of the current structure is the main frontage on Ardross Road which was commissioned by the Northern Counties Collegiate School, an educational establishment which was founded with strong connections with the Army and India in 1873.

[2][3] The building was designed by Alexander Ross in the Gothic Revival style, built in coursed stone and was completed in 1876.

[6][7] The complex was extended further along Glenurquhart Road with a modern structure built of brick and glass which was completed in 1963 providing additional office accommodation.

A purpose-built council chamber was subsequently added to the Glenurqhuart Road site, being a concrete structure to the south of the 1963 wing, linked to it by a first floor bridge.

[11] Works of art in the building include a portrait by Charles Martin Hardie of Captain Abraham Howling, Master of Trinity House.