In the early 20th century, the estate was relatively small and consisted of a one-story wooden residential house with many rooms and a corridor layout, a one-story wooden carriage house, an icehouse, and a small garden. The house was built in the late 19th and early 20th centuries with funds provided by Maria Timofeevna's father (née Trufanova), a fishing industry entrepreneur from the Pomor village of Shuya.

According to relatives and acquaintances, the Kunitsyn family home contained furniture made of valuable wood species, soft sofas and armchairs, a piano, paintings, and expensive dishes. Despite the innovations in the interior, there was a sacred zone with icons in the house, which was not always located in the formal rooms such as the hall and living room, but was definitely present in all living rooms and the kitchen.

The rooms were illuminated by hanging kerosene lamps, electric chandeliers, sconces, and table lamps. Electricity was brought to the house in 1914. The estate had Dutch stoves that were heated from the corridor and warmed two rooms at once.

Behind the hallway along the front facade of the house was the Kunitsyn family hall, the largest and brightest room. A large table, around which the large close-knit family gathered, occupied the central place in it. Today, it serves as a museum living room.

From the living room, one can access the owner's study, where the early 20th-century interior typical of middle-class Arkhangelsk families has been recreated. The study served as a workspace, library, relaxation room, and even the owner's bedroom.

Today, the museum complex "Estate of M.T. Kunitsyna" is used for educational, exhibition, enlightening, and informational activities of the "Small Koryely" museum. The complex also includes the ethnocultural center "Craft Courtyard," which is dedicated to preserving the intangible cultural heritage of Pomorye and uniting folk craftsmen from the region.