It is characterised by an elegant staircase on the right that meets at the front, as the solid handrail appears to wrap a portion of the building in elegance. To blend in with the existing Dakshina Chitra location, the staircase was moved to the left. The stairs and the arched verandah represent the British influence and westernisation of the time. The wooden granary downstairs has been replaced to make way for an exhibition space. It displays mural paintings and antique containers. Exhibits of the Islamic culture of the state are displayed on the upper floor, thus adding to the amalgamation of Kerala’s diverse religious communities under a single roof. The cowshed adjacent to the granary is built using timber with geometric cut designs on the wooden screen guarding the cows.
The two-story Koothattukulam Granary, which was transplanted from the border of Ernakulam and Kottayam, was part of a larger complex with a cowshed and a house similar to the Puthuppally House. The Koothattukulam House was once inhabited by traders, as it was in close proximity to Malabar and Travancore, thus making Koothatukulam a hub for trade and commerce. House expansion was a common practice in Kerala's upper middle-class communities.