170 years ago, the Nezamieh Mansion was constructed by Mirza Agha Khan Nouri for his eldest son, Mirza Kazem Khan Nizam al-Mulk. On June 20, 1936, it was registered on the National Heritage List of Iran under the name “Nezamieh Mansion and its Paintings,” with registration number 261. After Mirza Agha Khan Nouri, the Nezamieh underwent various changes, with the children of the deposed prime minister selling off parts of the garden to different people. Finally, on August 4, 1931, a deed for a mansion located in the Nezamieh Garden was registered in the name of Kazem Khan Fattahi Nouri. Kazem Khan worked as the chief protocol officer at the German Embassy and lived in this mansion with his wife, Khanom Jan, and his stepdaughter, Alaam-taj.

Nezamieh Mansion is currently located in the southwest corner of Baharestan Square, in an alley named after it—Nezamieh. The historical location of this area, known as Nezamieh Garden, can be identified by its alignment with the current position of Nezamieh House.

Due to extensive transformations from the city’s development at the beginning of the 20th century, Nezamieh Garden underwent significant changes. These transformations, involving construction in the area, date back to the era of Pahlavi I. During this period, around 1302 SH (1924 AD), extensive changes were made, and construction activities were carried out after Reza Khan (then the Army Commander known as Sardar Sepah, who would later become the King of Iran) purchased properties in this area from Hamdam al-Saltaneh (the wife of Jalal al-Dawlah and daughter of Mirza Yusef Mostofi al-Mamalek, the Prime Minister of the Qajar dynasty). Therefore, it can be said that Nezamieh Mansion is a Qajar-Pahlavi style building.

Currently, the site area of the building is approximately 698 square meters, while the built area of the two-story building is 390 square meters. The main entrance is centrally located on the southern facade, which is the primary facade and is symmetrically designed with brick materials. The most significant feature of the mansion is the central staircase, which connects the ground floor to the first floor. The other rooms are symmetrically arranged on either side of the staircase.

Originally, as the name suggests, the mansion was residential. However, it has now been restored and repurposed into a boutique hotel.